datavorous/entrance-exam-dataset huggingface dataset:
Doctors use a stethoscope to hear the sounds produced during each cardiac cycle. The second sound is heard when:

Options:
A Ventricular walls vibrate due to gushing in of blood from atria
B Semilunar valves close down after the blood flows into vessels from ventricles
C AV node receives signal from SA node
D AV valves open up

The correct answer is:
Semilunar valves close down after the blood flows into vessels from ventricles

Solution:
During each cardiac cycle two prominent sounds are produced which can be easily heard through a stethoscope.

- wherein

The first heart sound (lub) is associated with the closure of the tricuspid and bicuspid valves whereas the second heart sound (dub) is associated with the closure of the semilunar valves.

Topic: Biology, Body Fluids and Circulation, NEET
Dodo, passenger pigeon and Steller's sea cow become extinct in the last 500 years due to

Options:
A habitat destruction.
B over-exploitation.
C alien species invasion.
D co-extinction.

The correct answer is:
over-exploitation.

Solution:
Over exploitation refers to harvesting or poaching organisms to the point of diminishing population. It can lead to their extinction. For example, dodo, Steller's sea cow and passenger pigeon go extinct due to ove exploitation in the last 500 years.

Topic: Biology, Biodiversity and its Conservation, NEET
Does a bar magnet exert a torque on itself due to its own field?

Options:
A There is a force but no torque
B There are both force as well as torque
C Neither Force nor torque
D No force is exerted but a torque is there

The correct answer is:
Neither Force nor torque

Solution:
Correct Option is : (C)
Neither Force nor torque

Topic: Chemistry, Magnetic Properties of Matter, NEET
Does a patient require periodic infusion of genetically engineered lymphocytes after gene therapy?

Options:
A No
B Yes
C It depends on the patient's condition
D It is not mentioned in the paragraph

The correct answer is:
Yes

Solution:
The patient requires periodic infusion of such genetically engineered lymphocytes as these cells are not immortal.

Topic: Biology, Biotechnology and Its Applications, NEET
Does a trophic level represent a species or a functional level?

Options:
A Species
B Functional level
C Both
D Neither

The correct answer is:
Functional level

Solution:
The trophic level represents a functional level, not a species as such.

Topic: Biology, Ecosystem, NEET
Does boron react with acids and alkalies at moderate temperatures?

Options:
A Yes, it reacts with both acids and alkalies.
B No, it does not react with either acids or alkalies.
C It reacts with acids but not alkalies.
D It reacts with alkalies but not acids.

The correct answer is:
No, it does not react with either acids or alkalies.

Solution:
Boron does not react with acids and alkalies even at moderate temperature.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
Does Cornelius van Niel prove that the O₂ evolved by the green plant comes from carbon dioxide?

Options:
A Yes
B No
C May be
D None of the above

The correct answer is:
No

Solution:
Cornelius van Niel inferred that the O₂ evolved by the green plant comes from H₂O and not from carbon dioxide. This was later proved using radioisotopic techniques.

Topic: Biology, Photosynthesis in Higher Plants, NEET
Does cyclic photophosphorylation result in the synthesis of NADPH + H⁺?

Options:
A Yes
B No
C May be
D Cannot be specified.

The correct answer is:
No

Solution:
Cyclic photophosphorylation results only in the synthesis of ATP, but not of NADPH + H⁺.

Topic: Biology, Photosynthesis in Higher Plants, NEET
Does ecological pyramid include saprophytes?

Options:
A Yes
B No
C May Be
D None of the above

The correct answer is:
No

Solution:
Ecological pyramids do not give saprophytes any place in the ecosystem even though they play a vital role in the ecosystem.

Topic: Biology, Ecosystem, NEET
Does H+ exist freely or is it always associated with other atoms or molecules?

Options:
A H+ exists freely.
B H+ is always associated with other atoms or molecules.
C Depends on the medium.
D H+ exists in vaccum

The correct answer is:
H+ is always associated with other atoms or molecules.

Solution:
The paragraph states that H+ does not exist freely and is always associated with other atoms or molecules.

Topic: Chemistry, Hydrogen, NEET
Does hybridisation require only half-filled orbitals?

Options:
A Yes, hybridisation only occurs with half-filled orbitals.
B No, hybridisation can also involve filled orbitals of the valence shell.
C Hybridisation depends on the type of atom.
D Cannot be determined.

The correct answer is:
No, hybridisation can also involve filled orbitals of the valence shell.

Solution:
It is not necessary that only half-filled orbitals participate in hybridisation, indicating that filled orbitals can also be involved.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Does it matter if one uses gauge instead of absolute pressures in applying Bernoulli's equation? Explain.

Options:
A Yes, it matters because gauge pressures account for atmospheric pressure.
B No, it does not matter if one uses gauge instead of absolute pressure in applying Bernoulli's equation.
C Yes, it matters because absolute pressures provide more accurate results.
D No, it doesn't matter because Bernoulli's equation is independent of pressure references.

The correct answer is:
No, it does not matter if one uses gauge instead of absolute pressure in applying Bernoulli's equation.

Solution:
Correct Option is : (B)
No, it does not matter if one uses gauge instead of absolute pressure in applying Bernoulli's equation.

Topic: Chemistry, Mechanical Properties of Fluids, NEET
Does Kwashiorkar affect growth and brain development?

Options:
A No
B Yes
C May be
D None of the above

The correct answer is:
Yes

Solution:
Like marasmus, kwashiorkor shows wasting of muscles, thinning of limbs, failure of growth and brain development.

Topic: Biology, Digestion and Absorption, NEET
Does lymph also help in the transport of certain substances within the body?

Options:
A Yes
B No
C It can help only sometimes
D It depends on the organism

The correct answer is:
Yes

Solution:
Lymph also helps in the transport of certain substances within the body.

Topic: Biology, Body Fluids and Circulation, NEET
Does meiosis involve a single cycle of DNA replication?

Options:
A Yes
B No
C May be
D None of the above

The correct answer is:
Yes

Solution:
Meiosis involves only one cycle of DNA replication, meaning that the chromosomes are already replicated before meiosis begins, and this replication is not repeated during meiosis.

Topic: Biology, Cell Cycle and Cell Division, NEET
Does melatonin play a role in regulating the menstrual cycle?

Options:
A Yes
B No
C May be
D May not be

The correct answer is:
Yes

Solution:
Melatonin influences the menstrual cycle along with other important processes in the body.

Topic: Biology, Chemical Coordination and Integration, NEET
Does mitosis result in the increase or decrease of genetic diversity?

Options:
A Increases
B Decreases
C Conserves
D Does not affect

The correct answer is:
Does not affect

Solution:
Mitosis is the process of cell division in which the chromosome number is conserved, but it does not result in an increase or decrease in genetic diversity.

Topic: Biology, Cell Cycle and Cell Division, NEET
Does our blood have proteases and nucleases?

Options:
A Yes
B Maybe yes
C No
D Cannot be defined

The correct answer is:
No

Solution:
No, blood does not have proteases and nucleases.

Topic: Biology, Biotechnology and Its Applications, NEET
Does population size have to be measured in numbers only?

Options:
A Yes
B No
C Sometimes
D None of the above

The correct answer is:
No

Solution:
Population size, or population density, need not necessarily be measured in numbers only.

Topic: Biology, Organisms and Populations, NEET
Does propene obtained from the reduction of propyne using Pd/C show geometrical isomerism? Why or why not?

Options:
A Yes, because it has a double bond.
B Yes, because of the cis and trans configurations.
C No, because it lacks a double bond.
D No, because it is a linear molecule.

The correct answer is:
Yes, because of the cis and trans configurations.

Solution:
Propene (CH3CH=CH2) does show geometrical (cis-trans) isomerism because it has a double bond, which restricts rotation, and can exist in both cis and trans configurations.

Topic: Chemistry, Hydrocarbons, NEET
Does protein-energy malnutrition (PEM) only occur during droughts and famines?

Options:
A Yes, only during droughts and famines
B No, it occurs only during political turmoil
C No, it can also occur during times of peace and stability
D Yes, only during natural disasters

The correct answer is:
No, it can also occur during times of peace and stability

Solution:
PEM may affect large sections of the population during drought, famine and political turmoil, implying that it can occur during different times and not just during droughts and famines.

Topic: Biology, Digestion and Absorption, NEET
Does red phosphorus exhibit chemiluminescence, like white phosphorus?

Options:
A Yes, it glows in the dark
B No, it does not glow in the dark
C It exhibits chemiluminescence only in water
D It glows in the presence of heat

The correct answer is:
No, it does not glow in the dark

Solution:
The paragraph states that red phosphorus does not glow in the dark, unlike white phosphorus.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Does replication of DNA occur during Interkinesis?

Options:
A Yes
B No
C May be
D Cannot be determined.

The correct answer is:
No

Solution:
There is no replication of DNA during interkinesis.

Topic: Biology, Cell Cycle and Cell Division, NEET
Does surface tension alone account for the supply of water to the top of all trees?

Options:
A Yes, because the capillaries in trees can effectively transport water to great heights.
B No, as surface tension can only allow the sap to rise up to a limited height.
C Yes, since the surface tension is strong enough to push water to the top of all trees.
D No, because the capillaries' radius is too small to facilitate the rise of water to the top of tall trees.

The correct answer is:
No, as surface tension can only allow the sap to rise up to a limited height.

Solution:
Correct Option is : (B)
No, as surface tension can only allow the sap to rise up to a limited height.

Topic: Chemistry, Mechanical Properties of Fluids, NEET
Does the biosynthetic phase of photosynthesis directly depend on the presence of light?

Options:
A Yes
B No
C May be
D Both B) and C)

The correct answer is:
No

Solution:
The biosynthetic phase of photosynthesis does not directly depend on the presence of light, but it is dependent on the products of the light reaction, i.e., ATP and NADPH, besides CO₂ and H₂O.

Topic: Biology, Photosynthesis in Higher Plants, NEET
Does the ecological pyramid consider species belonging to two or more trophic levels?

Options:
A Yes
B No
C May Be
D None of the above

The correct answer is:
No

Solution:
One of the limitations of ecological pyramids is that it does not take into account the same species belonging to two or more trophic levels.

Topic: Biology, Ecosystem, NEET
Does the equilibrium constant provide information about the rate at which equilibrium is reached?

Options:
A Yes, it provides information about the rate.
B No, it does not provide information about the rate.
C It depends on the specific reaction.
D It depends on the temperature.

The correct answer is:
No, it does not provide information about the rate.

Solution:
An equilibrium constant does not give any information about the rate at which the equilibrium is reached.

Topic: Chemistry, Chemical Equilibrium, NEET
Does the escape speed of a body from the earth depend on

Options:
A the mass of the body
B the location from where it is projected
C the direction of projection,
D the height of the location from where the body is launched

The correct answer is:
the height of the location from where the body is launched

Solution:
Correct Option is : (D)
the height of the location from where the body is launched

Topic: Chemistry, Gravitation, NEET
Does the haloform reaction affect carbon-carbon double bonds in the molecule?

Options:
A Yes, it cleaves carbon-carbon double bonds
B No, it does not affect carbon-carbon double bonds
C It depends on the specific ketone used
D It depends on the halogen used

The correct answer is:
No, it does not affect carbon-carbon double bonds

Solution:
The haloform reaction does not affect carbon-carbon double bonds in the molecule; it primarily involves the oxidation of the methyl group to a haloform.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
Does the meristem in plants ever cease to divide?

Options:
A Yes
B No
C Sometimes
D Rarely

The correct answer is:
Yes

Solution:
The question asks if the meristem in plants ever ceases to divide, to which the answer is yes.

Topic: Biology, Plant - Growth and Development, NEET
Does the mitotic cell division occur in the diploid cells only in animals?

Options:
A Yes
B No
C May be
D None of the above

The correct answer is:
Yes

Solution:
In animals, mitotic cell division is only seen in the diploid somatic cells.

Topic: Biology, Cell Cycle and Cell Division, NEET
Does the mRNA require processing to become active in bacteria?

Options:
A Yes
B No
C Both A) and B)
D None of the above

The correct answer is:
No

Solution:
In bacteria, the mRNA does not require any processing to become active, and transcription and translation take place in the same compartment.

Topic: Biology, Molecular Basis of Inheritance, NEET
Does the number of chromosomes change during the S phase?

Options:
A Yes
B No
C May be
D None of the above

The correct answer is:
No

Solution:
During the S phase, the amount of DNA per cell doubles but there is no increase in the chromosome number.

Topic: Biology, Cell Cycle and Cell Division, NEET
Does the pineal gland secrete other hormones besides melatonin?

Options:
A Yes
B No
C May be
D May not be

The correct answer is:
No

Solution:
The pineal gland primarily secretes the hormone melatonin.

Topic: Biology, Chemical Coordination and Integration, NEET
Does the sea anemone benefit from hosting the clown fish?

Options:
A Yes
B No
C Sometimes
D It is unknown

The correct answer is:
No

Solution:
The sea anemone does not appear to benefit from hosting the clown fish. The clown fish benefits from the protection provided by the anemone's stinging tentacles, but the anemone is neither benefited nor harmed.

Topic: Biology, Organisms and Populations, NEET
Dominant epistasis is shown by

Options:
A Antirrhinum majus
B Lathyrus odoratus
C Mirabilis jalapa
D None of the above

The correct answer is:
None of the above

Solution:
Dominant epistasis is shown by Cucurbita pepo. Dominant epistasis happens when the dominant allele of one gene masks the expression of all alleles of another gene. Fruit and flower color in Cucurbita pepo is a common example for dominant epistasis.

Topic: Biology, Principles of Inheritance and Variation, NEET
Double fertilization involves

Options:
A fusion of male and female gametes only
B fertilization of egg cell with two male gametes.
C development of antipodal cells
D syngamy + triple fusion

The correct answer is:
syngamy + triple fusion

Solution:
Double fertilization is characteristic of angiosperm in which the first male gamete fuses with an egg cell, this is known as syngamy or true fertilization and the second male gamete fuses with the two polar nuclei, this is known as a triple fusion or vegetative fertilization.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
Double fertilization is exhibited by:

Options:
A Gymnosperms
B Algae
C Fungi
D Angiosperms

The correct answer is:
Angiosperms

Solution:
Double fertilization is a characteristic feature exhibited by angiosperms. It involves syngamy and triple fusion. There are two male gametes, out of which one fuses with the egg nucleus (n + n) during syngamy. During triple fusion, the other male gamete fuses with the polar nuclei and forms triploid (3n) Primary Endosperm Nucleus (PEN).

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET, NEET 2017
Doubling of the number of chromosomes can be achieved by disrupting mitotic cell division soon after

Options:
A Prophase
B Metaphase
C Anaphase
D Anaphase

The correct answer is:
Metaphase

Solution:
Doubling of chromosomes can be achieved at anaphase, as in this phase the sister chromatids gets separated, since mitotic apparatus is disrupted soon after metaphase, so the answer is option (2).

Topic: Biology, Cell Cycle and Cell Division, NEET, NEET 2023 (Manipur)
Dough kept overnight in warm weather becomes soft and spongy because of

Options:
A Cohesion
B osmosis.
C absorption of carbon dioxide from atmosphere.
D fermentation.

The correct answer is:
fermentation.

Solution:
Bread: Bread is prepared from the dough fermented using Baker’s yeast (Saccharomyces cerevisiae). The puffed-up appearance of dough is due to the production of CO2 during fermentation. CO2 gas, along with ethyl alcohol evaporates during baking, making bread porous and soft. The dough is a thick, elastic paste made the art of flour of any cereals. Leavening is the process of the rise of dough (or) batter by fermentation. The secretion of three enzymes causes it by yeast- amylase, maltase, and zymase.

Topic: Biology, Microbes in Human Welfare, NEET
Dough kept overnight in warm weather becomes son and spongy because of

Options:
A absorption of carbon dioxide from atmosphere
B fermentation
C cohesion
D osmosis.

The correct answer is:
fermentation

Solution:
During the fermentation the process where yeast converts sugar to carbon dioxide and alcohol in the absence of oxygen, causing dough to rise. Leavening agents make bread and other baked good rise by causing a foaming action that traps air bubbles in the food as it cooks. The trapped air gives the final product a light and fluffy texture
Related Theory
Many breads containing yeast not only are leavened by yeast-produced carbon dioxide but also owe their distinctive flavor to the metabolic products of yeast.

Topic: Biology, Respiration in Plants, NEET, NEET 2004
Down's syndrome in humans is due to:

Options:
A three ' $\mathrm{X}$ ' chromosomes
B three copies of chromosome 21
C monosomy
D two ' $\mathrm{Y}$ ' chromosomes.

The correct answer is:
three copies of chromosome 21

Solution:
Down's syndrome a genetic disorder is due to the presence of an extra chromosome 21 also known as trisomy of chromosome 21 .
Related Theory
Down's syndrome is caused due to abnormal cell division. During mitotic and meiotic cell division the chromosome pair separate so that each cell gets the copy of each chromosome. In Down syndrome, the chromosomes are not able to separate, giving rise to cells with an unequal number of chromosomes (nondisjunction).

Topic: Biology, Principles of Inheritance and Variation, NEET, NEET 2013 (Karnataka)
Down's syndrome is caused by an extra copy of chromosome number 21. What percentage of offspring produced by an affected mother and a normal father would be affected by this disorder?

Options:
A $100 \%$
B $75 \%$
C $50 \%$
D $25 \%$

The correct answer is:
$50 \%$

Solution:
Down syndrome is an autosomal disorder and is caused by an extra copy of chromosome number 21 .
According to the question, affected mother carries 47 chromosomes $(45+X X)$ and normal father has $(44+X Y)$
Thus, progeny $=50 \%$ trisomics and $50 \%$ normal child

Topic: Biology, Principles of Inheritance and Variation, NEET, NEET 2003
Down's syndrome is caused due to ________ of chromosomes.

Options:
A autosomal addition
B autosomal deletion
C allosomal addition
D allosomal deletion

The correct answer is:
autosomal addition

Solution:
Chromosomal disorder occurs when there is addition or deletion of chromosome in the individual. In case of trisomy of the 21st chromosome causes Down's syndrome. This results in mental retardation and physical development is retarded as well. The palm of the individual is broad with characteristic palm crease.

Topic: Biology, Principles of Inheritance and Variation, NEET
DPD =

Options:
A OP×TP
B OP+TP
C OP – WP
D TP – WP

The correct answer is:
OP – WP

Solution:
The pressure that is exerted by the movement of molecules from the region of higher concentration to the region of lower concentration is known as diffusion pressure. The DPD term was coined by B.S.Meyer in 1938. The reduction in diffusion pressure of the solvent in a system over its pure state is called diffusion pressure deficit. It can be calculated through this formula i.e. OP-WP. Here OP is the osmotic pressure. It is that minimum pressure which is required to stop the inward movement of water through the semipermeable membrane. WP is wall pressure that is exerted by the wall to the protoplasm.

Topic: Biology, Transport in Plants, NEET
DPT vaccine provides immunity against all of the following diseases, except

Options:
A Pertussis
B Diphtheria
C Tuberculosis
D Tetanus

The correct answer is:
Tuberculosis

Solution:
DPT: Diphtheria, pertussis (whooping cough) and tetanus. DPT vaccine is a prophylaxis.
OPV (oral polio vaccine): Vaccine for polio.
BCG (Bacillus Calmetto–Guerin): Vaccine for tuberculosis

Topic: Biology, Human Health and Diseases, NEET
Dr F. Went noted that if coleoptile tips were removed and placed on agar for one hour, the agar would produce a bending when placed on one side of freshly- cut coleoptile stumps. Of what significance is this experiment?

Options:
A It made possible the isolation and exact identification of auxin.
B It is the basis for quantitative determination of small amounts of growth- promoting substances.
C It supports the hypothesis that IAA is auxin.
D It demonstrated polar movements of auxins

The correct answer is:
It demonstrated polar movements of auxins

Solution:
Darwin and his son observed that the coleoptiles of canary grass responded to unilateral illumination by growing towards the light source. This is called phototropism. They performed series of experiments which concluded that the tip of coleoptile was the site of transmittable influence that caused the bending of the entire coleoptile. F.W. Went isolated auxin from the tips of coleoptiles of oat seedlings and concluded that phototropism of oat seedlings occur. They also concluded that phototropism in the tips of coleoptiles is due to the polar movement of auxin in the stem.
So, the correct answer is 'it demonstrated polar movements of auxins'.

Topic: Biology, Plant - Growth and Development, NEET, NEET 2014
Dr. John is a botanist, he is experimenting with exotic species of rose plant Rosa polyantha. He started with 40 plants, after a year 22 more plants were added through reproduction but also 14 plants died during the experimentation. Which of the following statements are correct?

1. The death rate is 0.35 % per year

2. The birth rate is 0.55 % per rose per year

3. The birth rate is 0.55 % per year

4. The death rate is 0.35% per rose per year

Options:
A 1 and 2
B 2 and 4
C 3 and 4
D 1 and 3

The correct answer is:
2 and 4

Solution:
By applying the formula: Birth rate = No. of births / Total population =224 = 0.55 per rose per year or 55% per year. Death rate = No. of Deaths / Total population =1440 = 0.35 per rose per year or 35% per year. These rates are referred as per capita birth and death rates in a population.

Topic: Biology, Organisms and Populations, NEET
Dr. Robert Edwards, Dr. Patrik Steptoe and Dr. Indira Hinduja are famous for their work on

Options:
A Test tube baby or IVF technique
B DNA fingerprinting techniques
C ICSI (Intracytoplasmic sperm injection) technique
D Discovering Saheli

The correct answer is:
Test tube baby or IVF technique

Solution:
Dr. Robert Edwards, Dr. Patrik Steptoe and Dr. Indira Hinduja are famous for their work on the test tube baby or IVF techniques. The test tube baby program involves: IVF-ET which means fertilization occurs outside the female body (In Vitro)in the laboratory and the resultant embryo up to the 8-celled stage is transferred to the fallopian tube (ZIFT) or more than 8-celled stage is transferred to uterus (IUT) of the mother.

Topic: Biology, Reproductive Health, NEET