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- khushi (1250) Points
- Latest Answer: 10 months ago
- In: NEET
polynomials
Identify the degree of a biquadratic polynomial.
4
5
6
3
- Jadon (1250) Points
- Latest Answer: 10 months ago
- In: NEET
How to find the value of vector i+j +k
How to the value of vector
- Mahak (11300) Points
- Latest Answer: 8 months ago
- In: NEET
Biology
The animal is correctly matched with its particular taxonomic category.
A) Housefly - Musca ,order
B) Humans - ptimata , family
C)Cuttlefish- Mollusca ,class
D) Tiger - tigris, species
- Mahak (11300) Points
- Latest Answer: 8 months ago
- In: NEET
Skull of mammals is.
(A) Amphicondylous (B) Condylless
(C) Dicondylous (D)Monocondylous
- Mahak (11300) Points
- Latest Answer: 8 months ago
- In: NEET
In the larynx of rabbit which one of the following, is the biggest cartilage
(A) Arytenoid cartilage (B) Cricoid cartilage
(C) Thyroid cartilage (D) Tracheal cartilage
- Mahak (11300) Points
- Latest Answer: 8 months ago
- In: NEET
In rabbit the basihyal is present in
(A) Collar bone (B) Hip bone
(C) Shoulder blade (D) Tongue bone
- Mahak (11300) Points
- Latest Answer: 8 months ago
- In: NEET
Haversian canal consists of
(A) Nerve fibres only
(B) An artery and a vein
(C) An artery, a vein, lymphatic vessels, nerve fibres and
cells.
(D) A hollow case of tissue.
- Mahak (11300) Points
- Latest Answer: 8 months ago
- In: NEET
A genetic disorder resulting in progressive degeneration of skeletal muscles is called
(A)Muscular dystrophy (B) Myathenia gravis
(C) Tetany (D)Arthritis
- Mahak (11300) Points
- Latest Answer: 8 months ago
- In: NEET
Which of the following helps in the articulation of the bones of the forelimbs with the axial skeleton?
(A) Sternum (B) Ribs
(C) Pectoral girdle (D) Pelvic girdle
- Mahak (11300) Points
- Latest Answer: 8 months ago
- In: NEET
Gliding joints are present between
(A) Phalanges of toes
(B) Acetabulum and femur
(C) Pre and post zygapophysis of successive vertebrae
(D) Atlas and axis
- Mahak (11300) Points
- Latest Answer: 8 months ago
- In: NEET
ATPase activity is located on
(A) Myosin shaft (B) Myosin tail
(C) Myosin head (D) All of the above
- khushi (1250) Points
- Latest Answer: 8 months ago
- In: JEE NEET
1. How to manage time effectively for JEE/NEET preparation?
1. How to manage time effectively for JEE/NEET preparation?
- khushi (1250) Points
- Latest Answer: 8 months ago
- In: JEE NEET
Which are the best books for JEE/NEET preparation?
. Which are the best books for JEE/NEET preparation?
- khushi (1250) Points
- Latest Answer: 8 months ago
- In: JEE NEET
How many hours should I study daily in Kota for JEE/NEET?
How many hours should I study daily in Kota for JEE/NEET?
- khushi (1250) Points
- Latest Answer: 8 months ago
- In: JEE NEET
How to stay motivated during JEE/NEET preparation?
How to stay motivated during JEE/NEET preparation?
- khushi (1250) Points
- Latest Answer: 8 months ago
- In: NEET
. Which are the best coaching institutes in Kota?
. Which are the best coaching institutes in Kota?
- khushi (1250) Points
- Latest Answer: 8 months ago
- In: JEE NEET
What is the best way to revise for JEE/NEET in the last 3 months?
What is the best way to revise for JEE/NEET in the last 3 months?
- khushi (1250) Points
- Latest Answer: 8 months ago
- In: NEET
How can I increase my problem-solving speed for JEE/NEET?
How can I increase my problem-solving speed for JEE/NEET?
- khushi (1250) Points
- Latest Answer: 8 months ago
- In: NEET
Is NCERT enough for NEET preparation?
Is NCERT enough for NEET preparation?
- khushi (1250) Points
- Latest Answer: 8 months ago
- In: JEE NEET
What is the best way to attempt JEE/NEET paper?
What is the best way to attempt JEE/NEET paper?
- khushi (1250) Points
- Latest Answer: 8 months ago
- In: JEE NEET
Should I join a test series in Kota?
Should I join a test series in Kota?
- khushi (1250) Points
- Latest Answer: 8 months ago
- In: JEE NEET
How to improve organic chemistry for NEET/JEE?
How to improve organic chemistry for NEET/JEE?
- khushi (1250) Points
- Latest Answer: 8 months ago
- In: JEE NEET
What should I do if I feel like quitting JEE/NEET preparation?
What should I do if I feel like quitting JEE/NEET preparation?
- Mahak (11300) Points
- Latest Answer: 6 months ago
- In: NEET
Which one of the following is a primary sex organ of human male?
- Scrotum
- Penis
- Testis
- Prostrate gland
- Mahak (11300) Points
- Latest Answer: 7 months ago
- In: NEET
Secondary sex organs in human male is:-
- Testis
- Ovary
- Beard
- Vas deference
- Mahak (11300) Points
- Latest Answer: 7 months ago
- In: NEET
Vasa efferentia connect the:-
- Testis with epididymis
- Kidney with urinary bladder
- Testis with scrotal wall
- None of the above
- Mahak (11300) Points
- Latest Answer: 7 months ago
- In: NEET
Common suct formed by union of vas deferences and duct from seminal vesicles is:-
- Urethra
- Rete testis
- Ejaculatory duct
- Epididymis
- Mahak (11300) Points
- Latest Answer: 7 months ago
- In: NEET
The functional unit of testis is :-
- Uriniferous tubules
- Malphighian tubules
- Seminiferous tubules
- Acini or lobules
- Mahak (11300) Points
- Latest Answer: 7 months ago
- In: NEET
Seminiferous tubules are composed of :-
- Spermatogonia
- Glandular epithelium
- Sensory epithelium
- Germinal epithelium
- Mahak (11300) Points
- Latest Answer: 7 months ago
- In: NEET
In huma, the testes are located in:-
- Abdominal cavity
- Thoracic cavity
- Extra abdominal cavity
- Pericardial cavity
- Mahak (11300) Points
- Latest Answer: 7 months ago
- In: NEET
In human, the testes occur in scrotal sacs, outside the viscera because of the :-
- Presence of urinary bladder
- Presence of rectum
- Long vas deferens
- Requirement of low temperature for spermatogenesis
- Mahak (11300) Points
- Latest Answer: 7 months ago
- In: NEET
Cells of leydig occur in :-
- Liver
- Kidney
- Ovary
- Testis
- Mahak (11300) Points
- Latest Answer: 7 months ago
- In: NEET
Fructose is present in the secretion of :-
- Seminal vesicle
- Perineal gland
- Cowpers gland
- Bartholins gland
- Mahak (11300) Points
- Latest Answer: 7 months ago
- In: NEET
Cambium activity is
- More active towards the periphery of stem
- More active towards the lateral sides of stem
- More active towards the inner side of stem
- Same on the both sides
- Mahak (11300) Points
- Latest Answer: 7 months ago
- In: NEET
Cambium is a type of
- Apical meristem
- Intercalary meristem
- Lateral meristem
- Permanent of mature meristem
- Mahak (11300) Points
- Latest Answer: 7 months ago
- In: NEET
Pith is a central part of the ground tissues generally made up of
- Parenchyma
- Collenchyma
- Collenchyma
- Sclerenchyma
- Mahak (11300) Points
- Latest Answer: 7 months ago
- In: NEET
Iterfascicular cambium is found
- Between pith and vascular bundle
- Between two vascular bundles
- In the vascular bundle
- Outside the bundle
- Mahak (11300) Points
- Latest Answer: 7 months ago
- In: NEET
Meristematic tissues are
- Premature having ability of division
- Mature does not have ability of division
- Premature not having ability of division
- Complex differentiating in xylem, phloem, and cambium
- Mahak (11300) Points
- Latest Answer: 7 months ago
- In: NEET
Cork is used as the stopper for bottles, for shock absorption and insulation because of
- It is light and conpressible
- Non reactive
- Sufficiently resistant to fire
- All of the above
- Mahak (11300) Points
- Latest Answer: 7 months ago
- In: NEET
The jute fibres anatomically are
- Bast fibres
- Cortical fibres
- Xylem fibres
- Pith fibres
- Mohammad Anas (13750) Points
- Latest Answer: 7 months ago
- In: NEET
What is the basis of five-kingdom classification?
.
- Mohammad Anas (13750) Points
- Latest Answer: 7 months ago
- In: NEET
Name one characteristic that differentiates Monera from Protista.
.
- Mohammad Anas (13750) Points
- Latest Answer: 7 months ago
- In: NEET
Describe the structure of the human heart with a labeled diagram.
.
- Mohammad Anas (13750) Points
- Latest Answer: 7 months ago
- In: NEET
Explain the differences between crystalline and amorphous solids. Give one example of each.
.
- Mahak goyal (30450) Points
- Latest Answer: 6 months ago
- In: NEET
The process by which green plants prepare their own food is called:
-
a) Respiration
-
b) Transpiration
-
c) Photosynthesis
-
d) Digestion
- Mahak goyal (30450) Points
- Latest Answer: 6 months ago
- In: NEET
Which organ is responsible for pumping blood throughout the human body?
-
a) Brain
-
b) Liver
-
c) Heart
-
d) Kidney
- Mahak goyal (30450) Points
- Latest Answer: 6 months ago
- In: NEET
The basic unit of life is:
-
a) Atom
-
b) Cell
-
c) Tissue
-
d) Organ
- Mahak goyal (30450) Points
- Latest Answer: 6 months ago
- In: NEET
Which of the following is a non-vascular plant?
-
a) Fern
-
b) Moss
-
c) Pine tree
-
d) Flowering plant
- Mahak goyal (30450) Points
- Latest Answer: 6 months ago
- In: NEET
The human skeleton is made up of how many bones?
-
a) 206
-
b) 210
-
c) 215
-
d) 220
- Mahak goyal (30450) Points
- Latest Answer: 6 months ago
- In: NEET
Which part of the brain controls balance and coordination?
-
a) Cerebrum
-
b) Cerebellum
-
c) Medulla oblongata
-
d) Hypothalamus
- Mahak goyal (30450) Points
- Latest Answer: 6 months ago
- In: NEET
The process of cell division that results in two identical daughter cells is called:
-
a) Meiosis
-
b) Mitosis
-
c) Fertilization
-
d) Germination
- Mahak goyal (30450) Points
- Latest Answer: 6 months ago
- In: NEET
Which of the following is a function of the human liver?
-
a) Producing insulin
-
b) Producing bile
-
c) Producing red blood cells
-
d) Filtering waste from the blood
- Mahak goyal (30450) Points
- Latest Answer: 6 months ago
- In: NEET
The pigment responsible for the green color in plants is:
-
a) Chlorophyll
-
b) Carotene
-
c) Xanthophyll
-
d) Anthocyanin
- Mahak goyal (30450) Points
- Latest Answer: 6 months ago
- In: NEET
Which of the following is a characteristic of mammals?
-
a) Laying eggs
-
b) Cold-blooded
-
c) Presence of hair or fur
-
d) Breathing through gills
- Mahak goyal (30450) Points
- Latest Answer: 6 months ago
- In: NEET
Which of the following is not a characteristic of living organisms?
A. Growth
B. Metabolism
C. Reproduction
D. Crystallization
- Mahak goyal (30450) Points
- Latest Answer: 6 months ago
- In: NEET
Binomial nomenclature was introduced by:
A. Darwin
B. Linnaeus
C. Aristotle
D. Theophrastus
- Mahak goyal (30450) Points
- Latest Answer: 6 months ago
- In: NEET
Which of the following tissues is responsible for the movement in our body?
A. Epithelial
B. Connective
C. Muscular
D. Nervous
- Mahak goyal (30450) Points
- Latest Answer: 6 months ago
- In: NEET
Which plant tissue is involved in transport of water?
A. Phloem
B. Collenchyma
C. Xylem
D. Parenchyma
- Mahak goyal (30450) Points
- Latest Answer: 6 months ago
- In: NEET
Which organelle is known as the 'powerhouse' of the cell?
A. Ribosome
B. Lysosome
C. Mitochondrion
D. Golgi apparatus
- Mahak goyal (30450) Points
- Latest Answer: 6 months ago
- In: NEET
Which of the following is a prokaryotic cell?
A. Amoeba
B. Bacteria
C. Paramecium
D. Algae
- Mahak goyal (30450) Points
- Latest Answer: 6 months ago
- In: NEET
Stomata open due to:
A. Decrease in turgor pressure of guard cells
B. Increase in turgor pressure of guard cells
C. Loss of water
D. Hormonal change
- Mahak goyal (30450) Points
- Latest Answer: 6 months ago
- In: NEET
Which pigment is responsible for capturing sunlight in photosynthesis?
A. Xanthophyll
B. Chlorophyll
C. Carotene
D. Anthocyanin
- Mahak goyal (30450) Points
- Latest Answer: 6 months ago
- In: NEET
The functional unit of kidney is:
A. Neuron
B. Nephron
C. Glomerulus
D. Bowman’s capsule
- Mahak goyal (30450) Points
- Latest Answer: 6 months ago
- In: NEET
Which enzyme is present in saliva?
A. Pepsin
B. Lipase
C. Amylase
D. Trypsin
- Mahak goyal (30450) Points
- Latest Answer: 6 months ago
- In: NEET
Which hormone regulates the blood sugar level?
A. Adrenaline
B. Insulin
C. Thyroxine
D. Glucagon
- Mahak goyal (30450) Points
- Latest Answer: 6 months ago
- In: NEET
What is the phenotypic ratio in a monohybrid cross?
A. 3:1
B. 1:2:1
C. 9:3:3:1
D. 1:1
- Mahak goyal (30450) Points
- Latest Answer: 6 months ago
- In: NEET
Which law of inheritance explains segregation of alleles?
A. Law of dominance
B. Law of segregation
C. Law of independent assortment
D. Law of purity
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
Which hormone regulates the opening and closing of stomata?
A. Auxin B. Gibberellin C. Abscisic Acid D. Cytokinin
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
What is the structural and functional unit of the kidney?
A. Glomerulus B. Nephron C. Bowman’s capsule D. Henle’s loop
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
DNA replication is called semi-conservative because:
A. Each strand is synthesized de novo B. One strand is old, one is new C. Both strands are old D. Both are new
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
Which among the following is a vestigial organ in humans?
A. Liver B. Kidney C. Vermiform appendix D. Pancreas
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
Which plant hormone promotes cell elongation?
A. Cytokinin B. Auxin C. Ethylene D. Abscisic acid
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
Which part of the brain controls voluntary actions?
A. Cerebellum B. Medulla C. Cerebrum D. Pons
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
What is the main nitrogenous waste in humans?
A. Ammonia B. Uric acid C. Creatinine D. Urea
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
Which of the following is not a component of the female reproductive system?
A. Ovary B. Uterus C. Testis D. Fallopian tube
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
The oxygen released during photosynthesis comes from:
A. CO₂ B. Glucose C. H₂O D. Chlorophyll
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
What is the SI unit of force?
(a) Dyne (b) Newton (c) Joule (d) Pascal
- Mahak goyal (21300) Points
- Latest Answer:
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The dimensional formula of work is:
(a) [MLT⁻²] (b) [ML²T⁻²] (c) [MLT⁻¹] (d) [M²L²T⁻²]
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
What is the acceleration due to gravity on Earth?
a) 0 m/s² (b) 9.8 m/s² (c) 1.6 m/s² (d) 4.9 m/s²
- Mahak goyal (21300) Points
- Latest Answer:
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Which of the following quantities has unit kg·m/s?
(a) Force (b) Momentum (c) Work (d) Energy
- Mahak goyal (21300) Points
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The work done by centripetal force is:
(a) Positive (b) Zero (c) Negative (d) Infinite
- Mahak goyal (21300) Points
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Rocket propulsion works on which principle?
(a) First Law (b) Second Law (c) Third Law (d) Gravitation Law
- Mahak goyal (21300) Points
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The escape velocity from Earth is approximately:
(a) 7.9 km/s (b) 9.8 km/s (c) 11.2 km/s (d) 5.6 km/s
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
A body is said to be in uniform motion if:
(a) Velocity increases (b) Velocity decreases (c) Constant velocity (d) Variable speed
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
The unit of electric current is:
(a) Volt (b) Ampere (c) Ohm (d) Watt
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
The lens used to correct myopia is:
(a) Convex (b) Concave (c) Plane (d) Cylindrical
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
One kilowatt-hour equals:
(a) 3600 J (b) 3.6 MJ (c) 360 J (d) 36 kJ
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
Ohm’s law states that:
(a) V = IR (b) P = VI (c) V = I/R (d) R = VI
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
The image formed by a plane mirror is:
(a) Real and inverted (b) Virtual and erect (c) Diminished (d) Magnified
- Mahak goyal (21300) Points
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Which of these is not a vector quantity?
(a) Displacement (b) Velocity (c) Acceleration (d) Speed
- Mahak goyal (21300) Points
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The number of significant figures in 0.00560 is:
(a) 2 (b) 3 (c) 4 (d) 5
- Mahak goyal (21300) Points
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When current flows through a wire, it produces:
(a) Light (b) Sound (c) Heat (d) Magnetic field
- Mahak goyal (21300) Points
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In a projectile motion, the horizontal component of velocity:
a) Increases (b) Decreases (c) Constant (d) Zero
- Mahak goyal (21300) Points
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The value of 1 electron volt is:
(a) 1.6×10⁻¹⁹ J (b) 1.6×10⁻¹⁶ J (c) 9.1×10⁻³¹ J (d) 3.2×10⁻¹⁹ J
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
Which of the following is a non-renewable source of energy?
(a) Solar (b) Wind (c) Coal (d) Tidal
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
Which property of light proves its wave nature?
(a) Reflection (b) Refraction (c) Polarization (d) Dispersion
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
Which of the following is not a function of the liver?
A) Detoxification B) Bile secretion C) Urea synthesis D) Insulin production
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
Which plant hormone is responsible for apical dominance?
A) Auxin B) Cytokinin C) Gibberellin D) Ethylene
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
The oxygen released during photosynthesis comes from:
A) Carbon dioxide B) Water C) Glucose D) Chlorophyll
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
Which organelle is known as the "suicide bag" of the cell?
A) Golgi apparatus B) Ribosome C) Lysosome D) Mitochondria
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
In which phase of meiosis does crossing over occur?
A) Metaphase I B) Anaphase I C) Prophase I D) Telophase I
- Mahak goyal (21300) Points
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The first stable product of C3 cycle is:
A) PGA B) PEP C) RuBP D) OAA
- Mahak goyal (21300) Points
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Which of the following is the structural and functional unit of the kidney?
A) Nephron B) Ureter C) Bowman’s capsule D) Loop of Henle
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
Which blood group is known as the universal donor?
A) AB B) A C) O D) B
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
DNA replication is:
A) Conservative B) Semi-conservative C) Dispersive D) Non-conservative
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
Which part of the brain regulates body temperature?
A) Cerebrum B) Cerebellum C) Medulla D) Hypothalamus
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
What is the function of hemoglobin?
A) Transports CO₂ B) Transports oxygen C) Destroys bacteria D) Forms blood clot
- Mahak goyal (21300) Points
- Latest Answer:
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Which is the principal nitrogenous excretory product in humans?
A) Ammonia B) Urea C) Uric acid D) Creatinine
- Mahak goyal (21300) Points
- Latest Answer:
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The site of fertilization in humans is:
A) Uterus B) Cervix C) Fallopian tube D) Vagina
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
Which enzyme is not present in human saliva?
A) Amylase B) Lipase C) Maltase D) Trypsin
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
Which component of the cell is selectively permeable?
A) Cytoplasm B) Nucleus C) Plasma membrane D) Cell wall
- Mahak goyal (21300) Points
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Which of the following is a vestigial organ in humans?
A) Appendix B) Liver C) Kidney D) Heart
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
In RNA, thymine is replaced by:
A) Adenine B) Guanine C) Cytosine D) Uracil
- Mahak goyal (21300) Points
- Latest Answer:
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Mendel is known as the father of:
A) Evolution B) Genetics C) Botany D) Biology
- Mahak goyal (21300) Points
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Which part of the flower develops into the fruit?
A) Ovule B) Ovary C) Petal D) Sepal
- Mahak goyal (21300) Points
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Which blood vessel carries oxygenated blood from lungs to heart?
A) Pulmonary artery B) Pulmonary vein C) Aorta D) Vena cava
- Mahak goyal (21300) Points
- Latest Answer:
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Which of the following has the highest ionization enthalpy?
A) Li B) Na C) K D) Be
- Mahak goyal (21300) Points
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The bond angle in water is:
A) 90° B) 104.5° C) 120° D) 180°
- Mahak goyal (21300) Points
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What is the IUPAC name of CH₃-CH₂-COOH?
A) Propanoic acid B) Ethanoic acid C) Butanoic acid D) Acetic acid
- Mahak goyal (21300) Points
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Which of the following is a Lewis acid?
A) NH₃ B) BF₃ C) H₂O D) CH₄
- Mahak goyal (21300) Points
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The number of sigma bonds in ethyne (C₂H₂) is:
A) 1 B) 2 C) 3 D) 5
- Mahak goyal (21300) Points
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What is the pH of a 0.01 M HCl solution?
A) 1 B) 2 C) 3 D) 4
- Mahak goyal (21300) Points
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Which law states that "At constant temperature, pressure is inversely proportional to volume"?
A) Charles' Law B) Boyle’s Law C) Avogadro’s Law D) Gay-Lussac's Law
- Mahak goyal (21300) Points
- Latest Answer:
- In: NEET
Which gas has the highest rate of diffusion?
A) O₂ B) H₂ C) CO₂ D) N₂
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The correct order of acidic strength is:
A) HF > HCl > HBr > HI B) HI > HBr > HCl > HF C) HCl > HF > HI > HBr D) HBr > HCl > HI > HF
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Which of the following is NOT a colligative property?
A) Osmotic pressure B) Vapour pressure lowering C) Surface tension D) Depression in freezing point
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What is the oxidation state of Mn in KMnO₄?
A) +2 B) +4 C) +7 D) +6
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Which is the strongest base in aqueous solution?
A) NaOH B) KOH C) NH₄OH D) Ca(OH)₂
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Which quantum number determines the shape of an orbital?
A) n B) l C) m D) s
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Which of the following is aromatic?
A) Cyclobutane B) Benzene C) Cyclopentane D) Cyclohexene
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Which of the following is most reactive towards nucleophilic substitution?
A) CH₃Cl B) CCl₄ C) CH₃Br D) CH₃I
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In which process is enthalpy change equal to internal energy change?
A) At constant pressure B) At constant volume C) During expansion D) At boiling point
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The correct order of increasing boiling point is:
A) H₂O < CH₃OH < CH₄ B) CH₄ < CH₃OH < H₂O C) CH₃OH < H₂O < CH₄ D) H₂O < CH₄ < CH₃OH
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What is the hybridization of carbon in ethene?
A) sp B) sp² C) sp³ D) dsp²
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Which element has the highest electronegativity?
A) Oxygen B) Nitrogen C) Fluorine D) Chlorine
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What is the empirical formula of a compound with 40% C, 6.7% H, and 53.3% O?
| A) CH₂O B) C₂H₄O₂ C) CH₄O D) C₆H₁₂O₆ |
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Which orbital has the lowest energy in a multi-electron atom?
A) 1s B) 2s C) 2p D) 3s
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Which of the following is used as a standard electrode?
A) Zn electrode B) SHE C) Cu electrode D) Ag/AgCl electrode
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What is the major product in the reaction of ethene with Br₂?
A) 1,2-dibromoethane B) Ethanol C) Bromoethane D) Ethene oxide
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Which substance has the highest melting point?
A) NaCl B) Ice C) CO₂ D) CH₄
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Which of the following is an example of a thermosetting polymer?
Learn the difference between thermosetting and thermoplastic polymers.
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Which is the correct order of increasing atomic radius?
A) Na < Mg < Al B) F < O < N C) Cl < Br < I D) Li > Be > B
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What is the number of unpaired electrons in Fe³⁺?
A) 3 B) 4 C) 5 D) 2
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What is the effect of a catalyst on activation energy?
A) Increases it B) Decreases it C) No effect D) Doubles it
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Which law gives the relation between pressure and temperature?
A) Boyle’s Law B) Charles’ Law C) Avogadro’s Law D) Gay-Lussac’s Law
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Which of the following species has sp³ hybridization?
A) BeCl₂ B) BCl₃ C) CH₄ D) CO₂
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What is the maximum number of electrons in a d-subshell?
A) 2 B) 6 C) 10 D) 14
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What is the maximum number of electrons in a d-subshell?
A) 2 B) 6 C) 10 D) 14
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What is the role of ozone in the atmosphere?
A) Absorbs UV rays B) Produces oxygen C) Absorbs CO₂ D) Produces smog
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Which of the following is amphoteric?
A) NaOH B) HCl C) Al(OH)₃ D) NH₃
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The process used for concentration of sulphide ores is:
A) Magnetic separation B) Froth flotation C) Leaching D) Roasting
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Which element exhibits variable oxidation states?
A) Na B) Mg C) Cu D) Ne
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The half-life of a first-order reaction is:
A) Constant B) Increases C) Decreases D) Depends on [A]
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Which of the following is not a greenhouse gas?
A) CO₂ B) CH₄ C) O₃ D) O₂
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Which of the following has a pyramidal shape?
A) CO₂ B) BF₃ C) CH₄ D) NH₃
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Which is a secondary alcohol?
A) Methanol B) Propan-2-ol C) Ethanol D) 2-methyl-2-propanol
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Which vitamin is water-soluble?
A) A B) D C) C D) E
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Which reagent is used for the detection of aldehydes?
A) Fehling’s solution B) Tollen’s reagent C) Benedict’s reagent D) All of the above
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Which is a biodegradable polymer?
A) PVC B) Nylon C) PHBV D) Teflon
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Which acid is present in vinegar?
A) Citric acid B) Acetic acid C) Tartaric acid D) Lactic acid
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Which of the following is an example of an ideal gas behavior?
A) Low pressure, high temperature B) High pressure, low temperature C) Low temperature only D) High pressure only
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The color of Cu²⁺ ion in aqueous solution is:
A) Green B) Blue C) Yellow D) Colorless
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Which alkane has only primary hydrogen atoms?
A) Methane B) Ethane C) Propane D) Neopentane
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Which process involves the conversion of a solid directly to gas?
A) Melting B) Condensation C) Sublimation D) Vaporization
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Which of the following is not an isomer of C₄H₁₀?
A) n-butane B) isobutane C) butene D) none of the above
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Which compound gives a positive iodoform test?
A) Ethanol B) Methanol C) Propan-1-ol D) Acetaldehyde
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What is the basicity of H₃PO₄?
A) 1 B) 2 C) 3 D) 4
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What is the function of placenta during pregnancy?
A) Gas exchange B) Nutrient supply C) Waste removal D) All of the above
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Which hormone is responsible for milk ejection in mammals?
A) Prolactin B) Oxytocin C) Estrogen D) Progesterone
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Which part of the nephron is involved in filtration?
A) Loop of Henle B) Bowman’s capsule C) Collecting duct D) Distal convoluted tubule
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What is the unit of inheritance in organisms?
A) Chromosome B) Allele C) Gene D) DNA
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Mendel’s law of segregation is based on which of the following?
A) Dihybrid cross B) Monohybrid cross C) Test cross D) Back cross
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What does the lac operon control?
A) Protein synthesis B) DNA replication C) Lactose metabolism D) Fat digestion
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What is the full form of DNA?
A) Deoxyribose nucleic acid B) Deoxyribonucleic acid C) Dextroribonucleic acid D) None
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Which RNA carries amino acids to the ribosome?
A) mRNA B) rRNA C) tRNA D) snRNA
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Which method is widely used for gene transfer in plants?
A) Microinjection B) Agrobacterium method C) Electroporation D) Lipofection
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Golden rice is genetically modified to produce more of which vitamin?
A) Vitamin A B) Vitamin B C) Vitamin C D) Vitamin D
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Which disease is caused by the deficiency of insulin?
A) Hypertension B) Diabetes mellitus C) Obesity D) Asthma
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Which immune cells produce antibodies?
A) T-cells B) B-cells C) Macrophages D) NK cells
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Which of the following is a bacterial STD?
A) AIDS B) Syphilis C) Hepatitis B D) Herpes
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Which greenhouse gas is primarily responsible for global warming?
A) O2 B) CO2 C) SO2 D) NO2
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What is the role of ozone in the atmosphere?
A) Traps heat B) Blocks UV radiation C) Absorbs CO2 D) Enhances rainfall
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The first transgenic animal was a:
A) Mouse B) Sheep C) Cow D) Rabbit
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In which organelle does photorespiration occur?
A) Mitochondria B) Chloroplast C) Peroxisome D) Both B and C
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Which type of immunity is acquired by vaccination?
A) Active natural B) Passive natural C) Active artificial D) Passive artificial
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Which plant hormone promotes fruit ripening?
A) Auxin B) Cytokinin C) Gibberellin D) Ethylene
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What is the function of ADH in the human body?
A) Increase urine volume B) Promote sodium retention C) Reduce water loss D) Stimulate thirst
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Which enzyme is used to cut DNA at specific sites?
A) DNA ligase B) DNA polymerase C) Restriction endonuclease D) Helicase
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What is the mode of action of oral contraceptive pills?
A) Stimulate ovulation B) Inhibit ovulation C) Increase implantation D) All of the above
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Which structure in the eye helps in focusing light?
A) Iris B) Retina C) Lens D) Cornea
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The function of the corpus luteum is to secrete:
A) Estrogen B) Progesterone C) Oxytocin D) FSH
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Which gas is released during photosynthesis?
A) CO2 B) O2 C) H2 D) N2
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Which component of blood helps in clotting?
A) RBCs B) WBCs C) Platelets D) Plasma
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Which ecosystem has the highest biodiversity?
A) Desert B) Tundra C) Rainforest D) Grassland
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Which vector is used in gene therapy for SCID?
A) Retrovirus B) Bacteriophage C) Plasmid D) Adenovirus
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Which part of the brain controls voluntary actions?
A) Medulla B) Cerebellum C) Cerebrum D) Hypothalamus
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What is the basic structural and functional unit of the kidney?
A) Glomerulus B) Nephron C) Bowman’s capsule D) Ureter
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Which phase of the cell cycle is responsible for DNA replication?
A) G1 phase B) G2 phase C) M phase D) S phase
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Which plant hormone is responsible for cell elongation?
A) Cytokinin B) Gibberellin C) Auxin D) Ethylene
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Which of the following is a sexually transmitted viral infection?
A) Gonorrhea B) Syphilis C) HIV/AIDS D) Chlamydia
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Which part of the brain regulates hunger and thirst?
A) Cerebrum B) Hypothalamus C) Cerebellum D) Medulla oblongata
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What is the function of the sclerenchyma in plants?
A) Photosynthesis B) Transport C) Support D) Storage
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Which pathway is common to both aerobic and anaerobic respiration?
A) Krebs cycle B) ETS C) Glycolysis D) Fermentation
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Which structure in chloroplast contains the pigments for photosynthesis?
A) Stroma B) Outer membrane C) Grana D) Inner membrane
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What is apomixis?
A) Asexual reproduction B) Fertilization C) Seed dormancy D) Vegetative propagation
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Which part of the flower develops into fruit?
A) Ovule B) Ovary C) Style D) Stigma
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Which hormone controls metamorphosis in insects?
A) Thyroxine B) Insulin C) Ecdysone D) Adrenaline
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Which of the following is an extensive property?
A. Density B. Temperature C. Mass D. Boiling Point
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Which quantum number determines the shape of an orbital?
A. Principal B. Azimuthal C. Magnetic D. Spin
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Which law states that mass can neither be created nor destroyed?
A. Avogadro’s Law B. Gay-Lussac’s Law C. Law of Conservation of Mass D. Dalton’s Law
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What is the number of moles in 22.4 L of CO₂ at STP?
A. 0.5 B. 1 C. 2 D. 1.5
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What is the shape of a p-orbital?
A. Spherical B. Dumbbell C. Linear D. Planar
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Which of the following is an isotope of hydrogen?
A. He B. Deuterium C. Oxygen D. Lithium
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Which element has the highest electronegativity?
A. Fluorine B. Oxygen C. Chlorine D. Nitrogen
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Ionization enthalpy increases across a period because:
A. Atomic radius increases B. Shielding increases C. Nuclear charge increases D. Atomic mass increases
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Which of the following is a Lewis acid?
A. NH₃ B. H₂O C. BF₃ D. CH₄
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The bond angle in H₂O is:
A. 109.5° B. 180° C. 104.5° D. 120°
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What is the oxidation number of Mn in KMnO₄?
A. +2 B. +4 C. +6 D. +7
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Which reagent is used in redox titration involving KMnO₄?
A. HCl B. H₂SO₄ C. NaOH D. NH₃
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Which gas shows the least deviation from ideal gas behavior?
A. CO₂ B. NH₃ C. He D. SO₂
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Van der Waals forces are present in:
A. Covalent bonds B. Ionic compounds C. Noble gases D. Metals
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What is the SI unit of pressure?
A. atm B. mmHg C. Pa D. Torr
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Boyle’s Law states that:
A. PV = nRT B. P ∝ T C. V ∝ T D. PV = constant
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Which has the highest boiling point among the following?
A. CH₄ B. H₂O C. NH₃ D. CO₂
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The enthalpy change in an exothermic reaction is:
A. Positive B. Zero C. Negative D. Infinite
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A process that occurs with the absorption of heat is:
A. Combustion B. Respiration C. Melting D. Neutralization
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Which of the following has a hydrogen bond?
A. CH₄ B. HCl C. NH₃ D. CO₂
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A 10 µF capacitor is charged to 50 V. What is the energy stored?
A) 0.025 J B) 0.0125 J C) 0.5 J D) 25 J
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What is the equivalent resistance of two 4Ω resistors in parallel?
A) 2Ω B) 4Ω C) 8Ω D) 1Ω
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A wire of length L is stretched to double its length. What happens to its resistance?
A) Remains same B) Becomes 2R C) Becomes 4R D) Becomes R/2
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A charge moving in a magnetic field experiences maximum force when angle between velocity and field is?
A) 0° B) 90° C) 180° D) 45°
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What is the value of Bohr magneton?
A) 9.27×10−24 J/T9.27 \times 10^{-24} \, \text{J/T}9.27×10−24J/T B) 1.6×10−191.6 \times 10^{-19}1.6×10−19 C) 6.63×10−346.63 \times 10^{-34}6.63×10−34 D) 3×1083 \t [Read More]
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Self-inductance of a coil is 1 H. The current changes from 0 to 2 A in 0.5 s. What is the induced emf?
A) 1 V B) 2 V C) 4 V D) 0.5 V
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Transformer is used to
A) Increase power B) Convert DC to AC C) Increase or decrease voltage D) Change resistance
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What is the speed of electromagnetic waves in vacuum?
A) 3×108 m/s
B) 1.5×108m/s
C) 9.8 m/s2
D) 3×106
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The ratio of amplitudes of two waves is 2:1. Ratio of intensities is?
A) 2:1 B) 1:2 C) 4:1 D) 1:4
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What is the wavelength of visible light?
A) 100–400 nm B) 400–700 nm C) 700–900 nm D) 1000–1500 nm
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In Young’s double slit experiment, fringe width increases if
A) Slit separation increases B) Wavelength decreases C) Screen distance increases D) None
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The work function of a metal is 2 eV. Threshold wavelength is?
A) 620 nm B) 6200 Å C) 1240 nm D) 1240 Å
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The de Broglie wavelength of a particle is inversely proportional to
A) Speed B) Momentum C) Mass D) Energy
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Half-life of a radioactive element is 10 days. Time for 1/8th to remain?
A) 10 days B) 20 days C) 30 days D) 40 days
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Energy equivalent of 1 amu is
A) 931 MeV B) 1.6 eV C) 9.31 MeV D) 13.6 eV
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In forward bias, the width of the depletion layer
A) Increases B) Decreases C) Remains same D) Doubles
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A Zener diode is used for
A) Amplification B) Rectification C) Voltage regulation D) Switching
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A body of mass 2 kg is moving in a circular path of radius 4 m with a uniform speed of 3 m/s. What is the centripetal force acting on the body?
a) 1.5 N
b) 4.5 N
c) 6.0 N
d) 9.0 N
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A charge of 2 µC is placed at a point. What is the electric field at a distance of 0.5 m from it? (k = 9×10⁹ Nm²/C²)
a) 36×10³ N/C
b) 72×10³ N/C
c) 108×10³ N/C
d) 120×10³ N/C
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What will be the final temperature when 100 g of 60°C water is mixed with 100 g of 20°C water?
a) 30°C
b) 35°C
c) 40°C
d) 50°C
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The half-life of a radioactive substance is 10 days. In how many days will only 1/4th of the original sample remain?
a) 5 days
b) 10 days
c) 15 days
d) 20 days
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Which of the following has the highest boiling point?
a) H₂O
b) H₂S
c) H₂Se
d) H₂Te
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Which among the following is not an ore of iron?
a) Hematite
b) Magnetite
c) Bauxite
d) Siderite
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Which of the following compounds shows tautomerism?
a) CH₃CH₂OH
b) CH₃CHO
c) CH₃COCH₃
d) CH₃COOH
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- Latest Answer: 5 months ago
- In: NEET
For a reaction A → B, the rate is found to be: Rate = k[A]². What is the order of the reaction?
a) 0
b) 1
c) 2
d) 3
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Which of the following is a plant hormone that inhibits growth?
a) Auxin
b) Gibberellin
c) Cytokinin
d) Abscisic acid
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Transpiration is least in:
a) Sunny day
b) Windy day
c) Humid day ✅
d) Dry day
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What is the phenotypic ratio in a dihybrid cross?
a) 9:3:3:1 ✅
b) 3:1
c) 1:2:1
d) 2:1
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Which part of the nephron is involved in filtration?
a) Loop of Henle
b) Collecting duct
c) Glomerulus ✅
d) Distal convoluted tubule
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What is the normal pH of blood?
a) 6.8
b) 7.0
c) 7.4 ✅
d) 8.0
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Which hormone is secreted by the corpus luteum?
a) Estrogen
b) Progesterone ✅
c) FSH
d) LH
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Which of the following diseases is not caused by a virus?
a) AIDS
b) Influenza
c) Typhoid ✅
d) Polio
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Which of the following belongs to phylum Arthropoda?
a) Earthworm
b) Leech
c) Butterfly ✅
d) Starfish
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The binomial name of mango is:
a) Mangifera indica ✅
b) Musa paradisiaca
c) Azadirachta indica
d) Triticum aestivum
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In a dihybrid cross involving two heterozygous parents (AaBb), what is the probability of obtaining offspring with at least one dominant allele for each gene?
a) 9/16
b) 15/16
c) 3/4
d) 1/4
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A person’s urine sample is found to contain glucose, amino acids, and proteins. Which part of the nephron is most likely malfunctioning?
a) Loop of Henle
b) Proximal convoluted tubule
c) Distal convoluted tubule
d) Collecting duct
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The major product of the reaction between acetyl chloride and aniline is:
a) Acetanilide
b) Benzamide
c) Anisole
d) Nitrobenzene
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A photon of energy 6.63 × 10⁻¹⁹ J strikes a metal surface with work function 5 × 10⁻¹⁹ J. What is the velocity of the emitted photoelectron? (m = 9.1 × 10⁻³¹ kg)
a) ≈1.5×105\approx 1.5 \times 10^5≈1.5×105 m/s
b) ≈2.0×106\approx 2.0 \times 10^6≈2.0×106 m/s
c) 0
d) 3.0 × 10⁸ m/s
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A disc is rotating with angular velocity ω. If a force is applied tangentially at the edge, what is the torque acting on it?
a) Fr
b) F/ω
c) F × θ
d) F/r
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In genetic engineering, which enzyme is used to join two DNA fragments?
a) DNA polymerase
b) DNA ligase
c) Restriction endonuclease
d) RNA polymerase
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In a food chain, 1000 kcal of energy is available at producer level. What will be the energy at tertiary consumer level?
a) 10 kcal
b) 1 kcal
c) 100 kcal
d) 0.1 kcal
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What is the oxidation state of Fe in [ 𝐹 𝑒 ( 𝐶 𝑁 ) 6 ] 3 − [Fe(CN) 6 ] 3− ?
a) +2
b) +3
c) +6
d) –3
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The rate constant of a reaction increases from 2 × 10⁻³ to 8 × 10⁻³ when temperature changes from 300K to 310K. What is the activation energy? (R = 8.314 J/mol·K)
a) 5.76 kJ/mol
b) 57.6 kJ/mol
c) 11.52 kJ/mol
d) 115.2 kJ/mol
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Two tuning forks produce frequencies of 256 Hz and 260 Hz respectively. On sounding together, how many beats will be heard per second?
a) 4
b) 2
c) 8
d) 516
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A convex lens forms a real, inverted image of an object placed 30 cm from it. If the image is formed at 60 cm, what is the focal length of the lens?
a) 10 cm
b) 15 cm
c) 20 cm
d) 30 cm
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An electron (mass 9 × 10–31 kg and charge 1.6 ×10–19 C) moving with speed c/100 (c = speed of light) is injected into a magnetic field B of magnitude 9 × 10–4 T perpendicular to its direction of motion. We wish to apply an uniform electric field E together with the magnetic field so that the electron does not deflect from its path. Then (speed of light c = 3 × 108 ms–1)
(1) E is perpendicular to B and its magnitude is 27 × 104 V m–1
(2) E is perpendicular to B and its magnitude is 27 × 102 V m–1
(3) E is parallel to B and its magnitude is 27 × 102 V m& [Read More]
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There are two inclined surfaces of equal length (L) and same angle of inclination 45° with the horizontal. One of them is rough and the other is perfectly smooth. A given body takes 2 times as much time to slide down on rough surface than on the smooth surface. The coefficient of kinetic friction (µk) between the object and the rough surface is close to
(1) 0.25
(2) 0.40
(3) 0.5
(4) 0.75
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The kinetic energies of two similar cars A and B are 100 J and 225 J respectively. On applying breaks, car A stops after 1000 m and car B stops after 1500 m. If FA and FB are the forces applied by the breaks on cars A and B respectively, then the ratio of A B F F is
(1) 3/2
(2) 2/3
(3) 1/3
(4) 1/2
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A ball of mass 0.5 kg is dropped from a height of 40 m. The ball hits the ground and rises to a height of 10 m. The impulse imparted to the ball during its collision with the ground is (Take g = 9.8 m/s2 )
(1) 21 NS
(2) 7 NS
(3) 0
(4) 84 NS
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A 2 amp current is flowing through two different small circular copper coils having radii ratio 1 : 2. The ratio of their respective magnetic moments will be
(1) 1 : 4
(2) 1 : 2
(3) 2 : 1
(4) 4 : 1
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In a certain camera, a combination of four similar thin convex lenses are arranged axially in contact. Then the power of the combination and the total magnification in comparison to the power (p) and magnification (m) for each lens will be, respectively
(1) 4p and 4m
(2) p4 and 4m
(3) 4p and m4
(4) p4 and m4
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An oxygen cylinder of volume 30 litre has 18.20 moles of oxygen. After some oxygen is withdrawn from the cylinder, its gauge pressure drops to 11 atmospheric pressure at temperature 27°C. The mass of the oxygen withdrawn from the cylinder is nearly equal to: [Given, = 100 –1 –1 Jmol K , 12 R and molecular mass of O2 = 32, 1 atm pressure = 1.01 × 105 N/m]
(1) 0.125 kg
(2) 0.144 kg
(3) 0.116 kg
(4) 0.156 kg
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To an ac power supply of 220 V at 50 Hz, a resistor of 20 Ω, a capacitor of reactance 25 Ω and an inductor of reactance 45 Ω are connected in series. The corresponding current in the circuit and the phase angle between the current and the voltage is, respectively
(1) 7.8 A and 30°
(2) 7.8 A and 45°
(3) 15.6 A and 30°
(4) 15.6 A and 45°
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The Sun rotates around its centre once in 27 days. What will be the period of revolution if the Sun were to expand to twice its present radius without any external influence? Assume the Sun to be a sphere of uniform density.
(1) 100 days
(2) 105 days
(3) 115 days
(4) 108 days
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The plates of a parallel plate capacitor are separated by d. Two slabs of different dielectric constant K1 and K2 with thickness 3 8 d and 2 d , respectively are inserted in the capacitor. Due to this, the capacitance becomes two times larger than when there is nothing between the plates. If K1 = 1.25 K2, the value of K1 is:
(1) 2.66
(2) 2.33
(3) 1.60
(4) 1.33
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Two cities X and Y are connected by a regular bus service with a bus leaving in either direction every T min. A girl is driving scooty with a speed of 60 km/h in the direction X to Y notices that a bus goes past her every 30 minutes in the direction of her motion, and every 10 minutes in the opposite direction. Choose the correct option for the period T of the bus service and the speed (assumed constant) of the buses.
(1) 9 min, 40 km/h
(2) 25 min, 100 km/h
(3) 10 min, 90 km/h
(4) 15 min, 120 km/h
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A uniform rod of mass 20 kg and length 5 m leans against a smooth vertical wall making an angle of 60° with it. The other end rests on a rough horizontal floor. The friction force that the floor exerts on the rod is (Take g = 10 m/s2 )
(1) 100 N
(2) 100 3 N
(3) 200 N
(4) 200 3 N
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Consider the diameter of a spherical object being measured with the help of a Vernier callipers. Suppose its 10 Vernier Scale Divisions (V.S.D.) are equal to its 9 Main Scale Divisions (M.S.D.). The least division in the M.S. is 0.1 cm and the zero of V.S. is at x = 0.1 cm when the jaws of Vernier callipers are closed. If the main scale reading for the diameter is M = 5 cm and the number of coinciding vernier division is 8, the measured diameter after zero error correction, is
(1) 5.18 cm
(2) 5.08 cm
(3) 4.98 cm
(4) 5.00 cm
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Which of the following is not an attribute of a population?
(1) Sex ratio (2) Natality
(3) Mortality (4) Species interaction
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The process of growth is maximum during
(1) Log phase (2) Lag phase
(3) Senescence (4) Dormancy
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The roots that originate from the base of the stem are
(1) Fibrous roots (2) Primary roots
(3) Prop roots (4) Lateral roots
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In which of the following techniques, the embryos are transferred to assist those females who cannot conceive?
(1) ZIFT and IUT
(2) GIFT and ZIFT
(3) ICSI and ZIFT
(4) GIFT and ICSI
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Identify the wrong statement with reference to the gene ‘I’ that controls ABO blood groups.
(1) The gene (I) has three alleles.
(2) A person will have only two of the three
alleles.
(3) When IA
and IB
are present together, they
express same type of sugar.
(4) Allele ‘i’ does no [Read More]
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The infectious stage of Plasmodium that enters the human body is
(1) Trophozoites
(2) Sporozoites
(3) Female gametocytes
(4) Male gametocytes
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Identify the substances having glycosidic bond and peptide bond, respectively in their structure
(1) Chitin, cholesterol
(2) Glycerol, trypsin
(3) Cellulose, lecithin
(4) Inulin, insulin
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Match the following columns and select the correct option.
Column-I Column-II
(a) Gregarious, (i) Asterias
polyphagous pest
(b) Adult with radial (ii) Scorpion
symmetry and larva
with bilateral
symmetry
(c) Book lungs (iii) Ctenoplana
(d) Bioluminesc [Read More]
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The plant parts which consist of two generations - one within the other (a) Pollen grains inside the anther (b) Germinated pollen grain with two male gametes (c) Seed inside the fruit (d) Embryo sac inside the ovule
(1) (a) only (2) (a), (b) and (c)
(3) (c) and (d) (4) (a) and (d)
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The product(s) of reaction catalyzed by nitrogenase in root nodules of leguminous plants is/are
(1) Ammonia alone
(2) Nitrate alone
(3) Ammonia and oxygen
(4) Ammonia and hydrogen
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Identify the correct statement with regard to G1 phase (Gap 1) of interphase.
(1) DNA synthesis or replication takes place.
(2) Reorganisation of all cell components
takes place.
(3) Cell is metabolically active, grows but
does not replicate its DNA.
(4) Nuclear Division takes place.
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Cuboidal epithelium with brush border of microvilli is found in
(1) Lining of intestine
(2) Ducts of salivary gland
(3) Proximal convoluted tubule of nephron
(4) Eustachian tube
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Ray florets have
(1) Inferior ovary
(2) Superior ovary
(3) Hypogynous ovary
(4) Half inferior ovary
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Which of the following is put into Anaerobic sludge digester for further sewage treatment?
(1) Primary sludge
(2) Floating debris
(3) Effluents of primary treatment
(4) Activated sludge
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Select the correct events that occur during inspiration. (a) Contraction of diaphragm (b) Contraction of external inter-costal muscles (c) Pulmonary volume decreases (d) Intra pulmonary pressure increases
(1) (a) and (b)
(2) (c) and (d)
(3) (a), (b) and (d)
(4) only (d)
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Identify the wrong statement with regard to Restriction Enzymes.
(1) Each restriction enzyme functions by
inspecting the length of a DNA sequence.
(2) They cut the strand of DNA at palindromic
sites.
(3) They are useful in genetic engineering.
(4) Sticky ends can be joined by [Read More]
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If the head of cockroach is removed, it may live for few days because
(1) the supra-oesophageal ganglia of the
cockroach are situated in ventral part of
abdomen.
(2) the cockroach does not have nervous
system.
(3) the head holds a small proportion of a
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Which of the following statements are true for the phylum-Chordata? (a) In Urochordata notochord extends from head to tail and it is present throughout their life. (b) In Vertebrata notochord is present during the embryonic period only. (c) Central nervous system is dorsal and hollow. (d) Chordata is divided into 3 subphyla : Hemichordata, Tunicata and Cephalochordata.
(1) (d) and (c) (2) (c) and (a)
(3) (a) and (b) (4) (b) and (c)
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Identify the incorrect statement
(1) Heart wood does not conduct water but
gives mechanical support
(2) Sapwood is involved in conduction of
water and minerals from root to leaf
(3) Sapwood is the innermost secondary
xylem and is lighter in colo [Read More]
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Meiotic division of the secondary oocyte is completed
(a) In Ur
(1) Prior to ovulation
(2) At the time of copulation
(3) After zygote formation
(4) At the time of fusion of a sperm with an
ovum
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Which of the following regions of the globe exhibits highest species diversity?
(1) Western Ghats of India
(2) Madagascar
(3) Himalayas
(4) Amazon forests
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Which of the following statements is not correct?
(1) In man insulin is synthesised as a
proinsulin
(2) The proinsulin has an extra peptide called
C-peptide.
(3) The functional insulin has A and B chains
linked together by hydrogen bonds.
(4) Genetically [Read More]
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The transverse section of a plant shows following anatomical features : (a) Large number of scattered vascular bundles surrounded by bundle sheath (b) Large conspicuous parenchymatous ground tissue (c) Vascular bundles conjoint and closed (d) Phloem parenchyma absent Identify the category of plant and its part :
(1) Monocotyledonous stem
(2) Monocotyledonous root
(3) Dicotyledonous stem
(4) Dicotyledonous root
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Embryological support for evolution was disapproved by
(1) Karl Ernst von Baer
(2) Alfred Wallace
(3) Charles Darwin
(4) Oparin
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The process responsible for facilitating loss of water in liquid form from the tip of grass blades at night and in early morning is
(1) Transpiration (2) Root pressure
(3) Imbibition (4) Plasmolysis
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Secondary metabolites such as nicotine, strychnine and caffeine are produced by plants for their
(1) Nutritive value
(2) Growth response
(3) Defence action
(4) Effect on reproduction
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The oxygenation activity of RuBisCo enzyme in photorespiration leads to the formation of
(1) 2 molecules of 3-C compound
(2) 1 molecule of 3-C compound
(3) 1 molecule of 6-C compound
(4) 1 molecule of 4-C compound and
1 molecule of 2-C compound
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Identify the wrong statement with reference to immunity.
(1) When exposed to antigen (living or dead)
antibodies are produced in the host’s
body. It is called “Active immunity”.
(2) When ready-made antibodies are directly
given, it is called “Passive i [Read More]
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Bt cotton variety that was developed by the introduction of toxin gene of Bacillus thuringiensis (Bt) is resistant to
(1) Insect pests (2) Fungal diseases
(3) Plant nematodes (4) Insect predators
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By which method was a new breed ‘Hisardale’ of sheep formed by using Bikaneri ewes and Marino rams?
(1) Out crossing (2) Mutational breeding
(3) Cross breeding (4) Inbreeding
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Identify the correct statement with reference to human digestive system.
(1) IIeum opens into small intestine
(2) Serosa is the innermost layer of the
alimentary canal
(3) IIeum is a highly coiled part
(4) Vermiform appendix arises from
duodenum
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Select the option including all sexually transmitted diseases.
(1) Gonorrhoea, Syphilis, Genital herpes
(2) Gonorrhoea, Malaria, Genital herpes
(3) AIDS, Malaria, Filaria
(4) Cancer, AIDS, Syphilis
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Presence of which of the following conditions in urine are indicative of Diabetes Mellitus?Presence of which of the following conditions in urine are indicative of Diabetes Mellitus?
(1) Uremia and Ketonuria
(2) Uremia and Renal Calculi
(3) Ketonuria and Glycosuria
(4) Renal calculi and Hyperglycaemia
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Which of the following pairs is of unicellular algae?
(1) Laminaria and Sargassum
(2) Gelidium and Gracilaria
(3) Anabaena and Volvox
(4) Chlorella and Spirulina
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Which of the following hormone levels will cause release of ovum (ovulation) from the graffian follicle?
(1) High concentration of Estrogen
(2) High concentration of Progesterone
(3) Low concentration of LH
(4) Low concentration of FSH
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Montreal protocol was signed in 1987 for control of
(1) Transport of Genetically modified
organisms from one country to another
(2) Emission of ozone depleting substances
(3) Release of Green House gases
(4) Disposal of e-wastes
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Which of the following is correct about viroids?
(1) They have RNA with protein coat
(2) They have free RNA without protein coat
(3) They have DNA with protein coat
(4) They have free DNA without protein coat
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The ovary is half inferior in :
(1) Brinjal (2) Mustard
(3) Sunflower (4) Plum
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The enzyme enterokinase helps in conversion of
(1) protein into polypeptides
(2) trypsinogen into trypsin
(3) caseinogen into casein
(4) pepsinogen into pepsin
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How many true breeding pea plant varieties did Mendel select as pairs, which were similar except in one character with contrasting traits?
(1) 4 (2) 2
(3) 14 (4) 8
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Name the plant growth regulator which upon spraying on sugarcane crop, increases the length of stem, thus increasing the yield of sugarcane crop.
(1) Cytokinin (2) Gibberellin
(3) Ethylene (4) Abscisic acid
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Name the enzyme that facilitates opening of DNA helix during transcription.
(1) DNA ligase (2) DNA helicase
(3) DNA polymerase (4) RNA polymerase
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Which of the following would help in prevention of diuresis?
(1) More water reabsorption due to
undersecretion of ADH
(2) Reabsorption of Na+ and water from renal
tubules due to aldosterone
(3) Atrial natriuretic factor causes
vasoconstriction
(4) Decrease in secret [Read More]
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The QRS complex in a standard ECG represents
(1) Repolarisation of auricles
(2) Depolarisation of auricles
(3) Depolarisation of ventricles
(4) Repolarisation of ventricles
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If the distance between two consecutive base pairs is 0.34 nm and the total number of base pairs of a DNA double helix in a typical mammalian cell is 6.6 × 109 bp, then the length of the DNA is approximately
(1) 2.0 meters
(2) 2.5 meters
(3) 2.2 meters
(4) 2.7 meters
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Which of the following statements is correct?
(1) Adenine pairs with thymine through two Hbonds
(2) Adenine pairs with thymine through one Hbond
(3) Adenine pairs with thymine through three
H-bonds
(4) Adenine does not pair with thymine
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Select the correct statement.
(1) Glucocorticoids stimulate gluconeogenesis.
(2) Glucagon is associated with
hypoglycemia.
(3) Insulin acts on pancreatic cells and
adipocytes.
(4) Insulin is associated with hyperglycemia.
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- Latest Answer: 5 months ago
- In: NEET
A resistance wire connected in the left gap of a metre bridge balances a 10 resistance in the right gap at a point which divides the bridge wire in the ratio 3 : 2. If the length of the resistance wire is 1.5 m, then the length of 1 of the resistance wire is :
(1) 1.0 × 10–2 m (2) 1.0 × 10–1 m
(3) 1.5 × 10–1 m (4) 1.5 × 10–2 m
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
A capillary tube of radius r is immersed in water and water rises in it to a height h. The mass of the water in the capillary is 5 g. Another capillary tube of radius 2r is immersed in water. The mass of water that will rise in this tube is :
(1) 2.5 g (2) 5.0 g
(3) 10.0 g (4) 20.0 g
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
The quantities of heat required to raise the temperature of two solid copper spheres of radii r1 and r2 (r1 = 1.5 r2) through 1 K are in the ratio :
(1)
27
8
(2)
9
4
(3)
3
2
(4)
5
3
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
For transistor action, which of the following statements is correct?
(1) Base, emitter and collector regions should have same doping concentrations
. (2) Base, emitter and collector regions should have same size.
(3) Both emitter junction as well as the collector junction are forward biased.
[Read More]- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
Taking into account of the significant figures, what is the value of 9.99 m – 0.0099 m?
(1) 9.9801 m
(2) 9.98 m
(3) 9.980 m
(4) 9.9 m
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
An electron is accelerated from rest through a potential difference of V volt. If the de Broglie wavelength of the electron is 1.227 × 10–2 nm, the potential difference is :
(1) 10 V (2) 102 V
(3) 103 V (4) 104 V
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
Assume that light of wavelength 600 nm is coming from a star. The limit of resolution of telescope whose objective has a diameter of 2 m is :
(1) 3.66 × 10–7 rad
(2) 1.83 × 10–7 rad
(3) 7.32 × 10–7 rad
(4) 6.00 × 10–7 rad
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
A series LCR circuit is connected to an ac voltage source. When L is removed from the circuit, the phase difference between current and voltage is 3 . If instead C is removed from the circuit, the phase difference is again 3 between current and voltage. The power factor of the circuit is :
(1) zero (2) 0.5
(3) 1.0 (4) –1.0
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
In Young’s double slit experiment, if the separation between coherent sources is halved and the distance of the screen from the coherent sources is doubled, then the fringe width becomes :
(1) double (2) half
(3) four times (4) one-fourth
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
Light of frequency 1.5 times the threshold frequency is incident on a photosensitive material. What will be the photoelectric current if the frequency is halved and intensity is doubled?
(1) doubled (2) four times
(3) one-fourth (4) zero
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
The energy required to break one bond in DNA is 10–20 J. This value in eV is nearly:
(1) 6 (2) 0.6
(3) 0.06 (4) 0.006
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
For transistor action, which of the following statements is correct?
(1) Base, emitter and collector regions should
have same doping concentrations.
(2) Base, emitter and collector regions should
have same size.
(3) Both emitter junction as well as the
collector junction are forwa [Read More]
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
Light with an average flux of 20 W/cm2 falls on a non-reflecting surface at normal incidence having surface area 20 cm2. The energy received by the surface during time span of 1 minute is :
(1) 10 × 103 J
(2) 12 × 103 J
(3) 24 × 103 J
(4) 48 × 103 J
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
In a certain region of space with volume 0.2 m3, the electric potential is found to be 5 V throughout. The magnitude of electric field in this region is :
(1) zero (2) 0.5 N/C
(3) 1 N/C (4) 5 N/C
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
Two particles of mass 5 kg and 10 kg respectively are attached to the two ends of a rigid rod of length 1 m with negligible mass. The centre of mass of the system from the 5 kg particle is nearly at a distance of :
(1) 33 cm (2) 50 cm
(3) 67 cm (4) 80 cm
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
The solids which have the negative temperature coefficient of resistance are:
(1) metals
(2) insulators only
(3) semiconductors only
(4) insulators and semiconductors
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
A body weighs 72 N on the surface of the earth. What is the gravitational force on it, at a height equal to half the radius of the earth?
(1) 48 N (2) 32 N
(3) 30 N (4) 24 N
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
Two cylinders A and B of equal capacity are connected to each other via a stop cock. A contains an ideal gas at standard temperature and pressure. B is completely evacuated. The entire system is thermally insulated. The stop cock is suddenly opened. The process is :
(1) isothermal
(2) adiabatic
(3) isochoric
(4) isobaric
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
The ratio of contributions made by the electric field and magnetic field components to the intensity of an electromagnetic wave is : (c = speed of electromagnetic waves)
(1) c : 1 (2) 1 : 1
(3) 1 : c (4) 1 : c2
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
For which one of the following, Bohr model is not valid ?
(1) Hydrogen atom
(2) Singly ionised helium atom (He+)
(3) Deuteron atom
(4) Singly ionised neon atom (Ne+)
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
Which of the following alkane cannot be made in good yield by Wurtz reaction?
(1) n-Hexane
(2) 2,3-Dimethylbutane
(3) n-Heptane
(4) n-Butane
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
The rate constant for a first order reaction is 4.606 × 10–3 s–1. The time required to reduce 2.0 g of the reactant to 0.2 g is :
(1) 100 s
(2) 200 s
(3) 500 s
(4) 1000 s
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
Measuring Zeta potential is useful in determining which property of colloidal solution?
(1) Viscosity
(2) Solubility
(3) Stability of the colloidal particles
(4) Size of the colloidal particles
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
Which one of the followings has maximum number of atoms ?
(1) 1 g of Ag(s) [Atomic mass of Ag = 108]
(2) 1 g of Mg(s) [Atomic mass of Mg = 24]
(3) 1 g of O2(g) [Atomic mass of O = 16]
(4) 1 g of Li(s) [Atomic mass of Li = 7]
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
The following metal ion activates many enzymes, participates in the oxidation of glucose to produce ATP and with Na, is responsible for the transmission of nerve signals.
(1) Iron
(2) Copper
(3) Calcium
(4) Potassium
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
Which of the following is not correct about carbon monoxide ?
(1) It forms carboxyhaemoglobin
(2) It reduces oxygen carrying ability of blood.
(3) The carboxyhaemoglobin (haemoglobin
bound to CO) is less stable than
oxyhaemoglobin.
(4) It is produced due to incomplete
[Read More]
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
Which of the following is a cationic detergent?
(1) Sodium lauryl sulphate
(2) Sodium stearate
(3) Cetyltrimethyl ammonium bromide
(4) Sodium dodecylbenzene sulphonate
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
The mixture which shows positive deviation from Raoult’s law is
(1) Ethanol + Acetone
(2) Benzene + Toluene
(3) Acetone + Chloroform
(4) Chloroethane + Bromoethane
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
Paper chromatography is an example of
(1) Adsorption chromatography
(2) Partition chromatography
(3) Thin layer chromatography
(4) Column chromatography
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
Identify the correct statement from the following :
(1) Wrought iron is impure iron with 4%
carbon.
(2) Blister copper has blistered appearance
due to evolution of CO2.
(3) Vapour phase refining is carried out for
Nickel by Van Arkel method.
(4) Pig iron ca [Read More]
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
Reaction between benzaldehyde and acetophenone in presence of dilute NaOH is known as
(1) Aldol condensation
(2) Cannizzaro’s reaction
(3) Cross Cannizzaro’s reaction
(4) Cross Aldol condensation
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
A mixture of N2 and Ar gases in a cylinder contains 7 g of N2 and 8 g of Ar. If the total pressure of the mixture of the gases in the cylinder is 27 bar, the partial pressure of N2 is : [Use atomic masses (in g mol–1) : N = 14, Ar = 40]
(1) 9 bar (2) 12 bar
(3) 15 bar (4) 18 bar
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
An increase in the concentration of the reactants of a reaction leads to change in
(1) activation energy
(2) heat of reaction
(3) threshold energy
(4) collision frequency
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
The calculated spin only magnetic moment of Cr2+ ion is
(1) 3.87 BM (2) 4.90 BM
(3) 5.92 BM (4) 2.84 BM
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
(1) 3.87 BM (2) 4.90 BM (3) 5.92 BM (4) 2.84 BM
(1) 0.20 K
(2) 0.80 K
(3) 0.40 K
(4) 0.60 K
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
Reaction between acetone and methylmagnesium chloride followed by hydrolysis will give :
(1) Isopropyl alcohol (2) Sec. butyl alcohol
(3) Tert. butyl alcohol (4) Isobutyl alcohol
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
On electrolysis of dil. sulphuric acid using Platinum (Pt) electrode, the product obtained at anode will be
(1) Hydrogen gas (2) Oxygen gas
(3) H2S gas (4) SO2 gas
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
Identify the correct statements from the following :
(a) CO2(g) is used as refrigerant for ice-cream
and frozen food.
(b) The structure of C60 contains twelve six
carbon rings and twenty five carbon rings.
(c) ZSM-5, a type of zeolite, is used to convert
alcohols i [Read More]
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
Identify a molecule which does not exist.
(1) He2 (2) Li2
(3) C2 (4) O2
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
Snow-blindness in Antarctic region is due to
(1) Freezing of fluids in the eye by low
temperature
(2) Inflammation of cornea due to high dose
of UV-B radiation
(3) High reflection of light from snow
(4) Damage to retina caused by infra-red
rays
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
Which of the following molecules hydrolyzes fast?
(1) Methyl chloride
(2) Acetamide
(3) Methyl acetate
(4) Ethyl formate
- Mohammad Anas (13750) Points
- Latest Answer: 5 months ago
- In: NEET
The greatest value of n, where n ∈ N, such that 3n divides 50! is:
(1) 20
(2) 21
(3) 22
(4) 23
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