datavorous/entrance-exam-dataset huggingface dataset:
Which of the following is not the part of Heavy Meromyosin (HMM)?

Options:
A Globular head
B Short arm
C Binding site for actin
D Binding site for Tropomyosin

The correct answer is:
Binding site for Tropomyosin

Solution:
Myosin: Each myosin (thick) filament is a polymerised protein with Meromyosin as monomeric proteins. Each meromyosin has two parts:
A. Heavy meromyosin (HMM): Globular head with a short arm. It projects outwards at regular intervals and angle from the surface of a polymerised myosin filament and is known as cross arm. The globular head is an active ATPase enzyme which has binding sites for ATP and active sites for actin.
B. Light meromyosin (LMM): Tail

Topic: Biology, Locomotion and Movement, NEET
Which of the following is not the product of dehydration of
?

Options:
A
B
C
D

The correct answer is:

Solution:
Intermediate carbocation (more stable). No rearangement in C+ takes place.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET, NEET 2015 (Phase 2)
Which of the following is not the property of Amorphous solids?

Options:
A Cut into two irregular pieces when cut with sharp edged tool
B Isotropic in nature
C Definite enthalpy of fusion
D Sharp melting point

The correct answer is:
Sharp melting point

Solution:
Correct Option is : 4
Sharp melting point

Topic: Chemistry, Solid State, NEET
Which of the following is not the property of cathode rays?

Options:
A It produces heating effect
B It does not deflect in an electric field
C It casts shadow
D It produces fluorescence

The correct answer is:
It does not deflect in an electric field

Solution:
Cathode rays does not deflect in an electric field.

Topic: Physics, Dual Nature of Matter, NEET, NEET 2002
Which of the following is not the property of crystalline solids?

Options:
A Definite enthalpy of fusion
B Isotropic in nature
C Long range order
D Melt at sharp temperature

The correct answer is:
Isotropic in nature

Solution:
Correct Option is : 2
Isotropic in nature

Topic: Chemistry, Solid State, NEET
Which of the following is not the task under reproductive and child health care (RCH) programme?

Options:
A Providing facilities to build up a reproductively health society.
B Creating awareness regarding reproduction-related aspects.
C Awareness regarding water borne disease
D Awareness regarding contraceptive measures.

The correct answer is:
Awareness regarding water borne disease

Solution:
An improved program like Reproductive and Child Health Care (RCH) was launched with the following objectives :
1. Creating awareness and providing information to the people about reproduction and other related aspects :
A. Reproductive organs. B. Adolescence and related changes.
C. Safe and hygienic sexual practices. D. Sexually transmitted diseases (STD).
E. Marriageable age. F. Birth control options.
G. Care of pregnant mothers and postnatal care of the mother and child.
H. Importance of breastfeeding.
I. Massive child immunization.
2. Providing facilities and support for building up a reproductively healthy society are the major tasks under these programs.

Topic: Biology, Reproductive Health, NEET
Which of the following is not the task under the Reproductive and child health care (RCH) program?

Options:
A Providing facilities to build up a reproductively healthy society.
B Awareness regarding contraceptive measures.
C Creating awareness regarding reproduction-related aspects.
D Awareness regarding water borne disease.

The correct answer is:
Awareness regarding water borne disease.

Solution:
Reproductive and Child Health Care (RCH) was launched with following objectives :
1. Creating awareness and providing information to the people about reproduction and other related aspects :
A. Reproductive organs. B. Adolescence and related changes.
C. Safe and hygienic sexual practices. D. Sexually transmitted diseases (STD).
E. Marriageable age. F. Birth control options.
G. Care of pregnant mothers and post- natal care of the mother and child.
H. Importance of breast feeding.
I. Massive child immunization.
2. Providing facilities and support for building up a reproductively healthy society are the major tasks under these programmes.

Topic: Biology, Reproductive Health, NEET
Which of the following is not true about biodiversity?

Options:
A Maximum biodiversity occurs in tropics.
B Introduction of exotic species may cause the loss of biodiversity.
C Hotspots are the region with very high species richness and high degree of endemism.
D The diversity of microbes is not biodiversity.

The correct answer is:
The diversity of microbes is not biodiversity.

Solution:
Biodiversity includes all the living form exists on the planet. It is the variety and variability of life on Earth. Biodiversity is typically a measure of variation at the genetic, species, and ecosystem levels. Terrestrial biodiversity is usually greater near the equator, which is the result of the warm climate and high primary productivity.

Topic: Biology, Biodiversity and its Conservation, NEET
Which of the following is not true about chloramphenicol?

Options:
A It inhibits the growth of only grampositive bacteria.
B It is a broad spectrum antibiotic.
C It is not bactericidal.
D It is bacteriostatic.

The correct answer is:
It inhibits the growth of only grampositive bacteria.

Solution:
Chloramphenicol is a broad spectrum antibiotic which can inhibit the growth of gram positive bacteria and gram negative bacteria.

Topic: Chemistry, Chemistry in Everyday Life, NEET, NEET 2020 (Phase 2)
Which of the following is not true about human evolution?

Options:
A About 15 mya, primates called Dryopithecus and Ramapithecus were existing.
B The first human-like being the hominid was called Homo habilis with brain capacity between 650-800cc.
C During ice age between 75,000-10,000 years ago the modern Homo sapiens arose.
D Pre-historic cave art were developed by ancestors of modern man around 10,000 years ago.

The correct answer is:
Pre-historic cave art were developed by ancestors of modern man around 10,000 years ago.

Solution:
Pre-historic cave art were developed by ancestors of modern man around 18,000 years ago. One such painting by pre-historic humans can be seen at Bhimbetka rock shelter in Raisen district of Madhya Pradesh. Agriculture came around 10,000 years back and human settlements started.

Topic: Biology, Evolution, NEET
Which of the following is not true about polymers?

Options:
A Polymers are high molecular mass macromolecules
B Polymers may be of natural or synthetic origin
C Generally condensation polymers are made up of one type of monomers only
D They have high viscosity and do not carry any charge

The correct answer is:
Generally condensation polymers are made up of one type of monomers only

Solution:
Condensation polymers are generally made by condensation of two different molecules. For e.g. in bakelite phenol and formaldehyde are used.

Topic: Chemistry, Polymers, NEET
Which of the following is not true about succession?

Options:
A It is a natural process of change in species structure and community with time
B It is a gradual and predictable change
C Progressive increase in the amount of living biomass as succession proceeds
D Food chain relationship becomes less complex as succession proceeds

The correct answer is:
Food chain relationship becomes less complex as succession proceeds

Solution:
Ecosystem characteristics that change during succession:
i) Change in the diversity of species i.e., some species colonize an area and their populations become more numerous, whereas populations of other species decline and even disappear.
ii) Little diversity to a high degree of diversity i.e., increase in the number of species.
iii) Total biomass increases.
iv) Increase in humus content of the soil.
v) Aquatic or dry conditions to mesic conditions i.e, both Hydrarch and Xerarch succession lead to medium water conditions (mesic), neither too dry (xeric) nor too wet (hydric).
vi) Vegetational changes, in turn, affect food and shelter for various types of animals. Thus, as succession proceeds, the number and types of animals and decomposers also change.

Topic: Biology, Ecosystem, NEET
Which of the following is not true about the XO type of sex determination?

Options:
A All eggs bear an additional X:chromosome besides the other chromosomes
B Males have only one X:chromosome besides the autosomes
C The presence or absence of the Y:chromosome in the sperm determines the sex of the offspring
D Females have a pair of X:chromosomes besides the autosomes

The correct answer is:
The presence or absence of the Y:chromosome in the sperm determines the sex of the offspring

Solution:
In the XO type of sex determination, the sex of the offspring is determined by the presence or absence

Topic: Biology, Principles of Inheritance and Variation, NEET
Which of the following is not true for a species?

Options:
A members of a species can interbreed
B gene flow does not occur between the population of a species
C each species is reproductively isolated from every other species
D variations occur among members of a species.

The correct answer is:
gene flow does not occur between the population of a species

Solution:
Gene flow is the "transfer" of genes from one population to another. This does happen between populations of a species, and tends to reduce the differences between populations. Gene flow occurs between populations of a species by gene migration i.e., emigration and immigration. This is because gene flow ensures that all the populations of a particular species share a common gene pool. Variations too, exist between members of a particular species.
Related Theory
In biology, species is the most basic unit of classification, as well as a taxonomic rank. The next taxonomic rank on the hierarchy of biological classification is a genus. Species is the lowest taxon in the taxonomical hierarchy. The members of a particular species can interbreed, but are reproductively isolated from members of other species.

Topic: Biology, Ecosystem, NEET, NEET 2005
Which of the following is not true for a species?

Options:
A The species is the principal natural taxonomic unit, ranking above the genus.
B Gene flow does not occur between the populations of a species.
C Each species is reproductively isolated from every other species.
D Variations occur among members of a species.

The correct answer is:
Gene flow does not occur between the populations of a species.

Solution:
Gene flow occur between the populations of a species, e.g., Homo sapiens
Gene flow has been observed in humans. For example, in the United States, gene flow was observed between a white European population and a black West African population, which were recently brought together

Topic: Biology, Evolution, NEET
Which of the following is not true for an anticodon?

Options:
A It consists of three nucleotides
B It is basic unit of genetic code
C It is present on tRNA molecule
D It may pair with more than one codon.

The correct answer is:
It is basic unit of genetic code

Solution:
Basic unit of genetic code is codon which is present on mRNA. Codon is sequence of three nucleotide on mRNA which specifies one amino acid.

Topic: Biology, Molecular Basis of Inheritance, NEET
Which of the following is not true for an eukaryotic cell?

Options:
A Cell wall is made up of peptidoglycans
B It has 80S type of ribosome present in the cytoplasm
C Mitochondria contain circular DNA
D Membrane bound organelles are present

The correct answer is:
Cell wall is made up of peptidoglycans

Solution:
In bacteria (prokaryotes) cell wall is made up of peptidoglycan.

Topic: Biology, Cell - The Unit of Life, NEET
Which of the following is not true for gastrula stage of embryonic development in human?

Options:
A Morphogenic movements of blastomere
B Formation of blastocyst with fluid filled cavity
C Formation of three primary germinal layers
D Formation of epiblast and hypoblast from germinal disc

The correct answer is:
Formation of blastocyst with fluid filled cavity

Solution:
Due to cleavage, the zygote is changed to a 64-celled or blastomere stage called a blastocyst, has an outer layer of trophoblast cells, inner mass of cells, and a blastocyst cavity in blastula stage. This blastocyst is going to be implanted in the endometrium of the uterus in the presence of progesterone hormone.
Formation of gastrula from blastula is known as gastrulation. During gastrulation, three primary germinal layers-ectoderm, mesoderm and endoderm are formed by morphogenetic movements and rearrangement of the cells.

Topic: Biology, Human Reproduction, NEET
Which of the following is not true for thermoplastic polymers?

Options:
A Thermoplastics are linear polymers
B They soften and melt on heating
C Molten polymer can be remoulded into any shape
D They have cross-linkage which break on heating

The correct answer is:
They have cross-linkage which break on heating

Solution:
Thermoplastics do not have any cross-linkages hence they are soft and can be remoulded after heating.

Topic: Chemistry, Polymers, NEET
Which of the following is NOT true of a synapse?

Options:
A Neurotransmitters affect postsynaptic neurons
B Many neurons may be involved
C A synaptic cleft separates the neurons of the synapse
D Neurotransmitters are released from dendrites

The correct answer is:
Neurotransmitters are released from dendrites

Solution:
Synapse is the gap between two neurons and it consists of presynaptic membrane formed by axons of one neuron and postsynaptic membrane formed by dendrites of other neuron. It is involved in chemical transmission. The impulse causes release of neurotransmitters from presynaptic membrane into the synaptic cleft. Dendrites carry information towards the cell and does not cause release of neurotransmitters.

Topic: Biology, Neural Control and Coordination, NEET
Which of the following is not true regarding artificial insemination?

Options:
A Ideal parents are carefully chosen before the female is impregnated.
B The semen may be used immediately or can be frozen and used at a later date
C The fertilised eggs at 8â32 cells stages, are recovered from the original parent non-surgically and transferred to surrogate mothers.
D It helps in overcoming several problems of normal matings.

The correct answer is:
The fertilised eggs at 8–32 cells stages, are recovered from the original parent non-surgically and transferred to surrogate mothers.

Solution:
Controlled breeding experiments are carried out using artificial insemination. The semen is collected from the male that is chosen as a parent and injected into the reproductive tract of the selected female by the breeder. The semen may be used immediately or can be frozen and used at a later date. It can also be transported in a frozen form to where the female is housed. In this way desirable matings are carried. Artificial insemination helps us overcome several problems of normal matings.
In MOET, a cow is administered hormones, with FSH-like activity, to induce follicular maturation and super ovulation â instead of one egg, which they normally yield per cycle, they produce 6-8 eggs. The animal is either mated with an elite bull or artificially inseminated. The fertilised eggs at 8â32 cells stages, are recovered non-surgically and transferred to surrogate mothers. The genetic mother is available for another round of super ovulation.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
Which of the following is not true regarding the transgenic animals?

Options:
A Transgenic mice are being developed for use in testing the safety of vaccines before they are used on humans.
B They are used to study complex factors involved in growth such as insulin-like growth factor.
C Protein alpha-1 antitrypsin is used for replacement therapy for individuals at risk from emphysema.
D In 1997, the first transgenic cow, Rosie, produced human protein beta lactalbumin enriched milk.

The correct answer is:
In 1997, the first transgenic cow, Rosie, produced human protein beta lactalbumin enriched milk.

Solution:
In 1997, the first transgenic cow, Rosie, produced human protein-enriched milk (2.4 grams per litre). The milk contained the human alpha-lactalbumin and was nutritionally a more balanced product for human babies than natural cow-milk.

Topic: Biology, Biotechnology and Its Applications, NEET
Which of the following is not true?

Options:
A Virus-free plants can be produced by meristem culture.
B Somaclonal variations may be present in plants produced from callus.
C Somaclonal variations are caused due to recombination during meiosis.
D Cellular totipotency was first demonstrated by F.C. Steward

The correct answer is:
Somaclonal variations are caused due to recombination during meiosis.

Solution:
Somaclonal variation is defined as genetic variation observed among the progeny of plants regenerated from somatic cells cultured in vitro. Although theoretically, all plants regenerated from somatic cells should be clones, a number of observations have indicated that this is not the case. In addition to the basic genetic implications of this phenomenon, the variation has proven useful in breeding programs of various crop plants. Meiosis is not involved in somaclonal variation.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
Which of the following is not uricotelic?

Options:
A Cockroach
B Pigeon
C Sparrow
D Frog

The correct answer is:
Frog

Solution:
The removal of nitrogenous waste in the form of uric acid is called uricotelism and the concerned animal is called uriotelic, e.g. insects, birds and reptiles. Frog is an ureotelic animal.

Topic: Biology, Excretory Products and their Elimination, NEET
Which of the following is not used as a biopesticide?

Options:
A Bacillus thuringiensis
B Trichoderma harzianum
C Nuclear Polyhedrosis Virus (NPV)
D Xanthomonas campestris

The correct answer is:
Xanthomonas campestris

Solution:
The bacterium Xanthomonas campestris is the causative agent of plant disease, black rot of cabbage.
Bacillus thuringiensis, T. harzianum and NPV are biopesticides.

Topic: Biology, Biotechnology and Its Applications, NEET, NEET 2009 (Screening)
Which of the following is not used as a biopesticide?

Options:
A Nuclear Polyhedrosis Virus (NPV)
B Xanthomonas
C Bacillus thuringiensis
D Nosema locustae

The correct answer is:
Xanthomonas

Solution:
Chemicals or toxins of biological origin used as pesticides are called biopesticides.Bacillus thuringiensis produces Bt toxin that interrupts the digestive process in the gut of insect to kill them. Nuclear Polyhedrosis Virus (NPV) (Baculoviruses) is used as insecticides for crops as it affects the pest-insect group like moths and butterflies.
Xanthomonas campestris is a plant pathogen of bacterial origin.
Nosema locustae is a fungal biopesticide utilized in curbing insect pest group like grasshoppers, caterpillars, variety of corn borers.

Topic: Biology, Microbes in Human Welfare, NEET
Which of the following is observed during stomatal closure?

Options:
A Accumulation of K+ ion in guard cell
B Increased TP of guard cell
C Increased thickening of inner wall of guard cell
D Decrease in pH of guard cell

The correct answer is:
Increased thickening of inner wall of guard cell

Solution:
The immediate cause of the opening or closing of stomata is a change in the turgidity of the guard cells. During closure pH of the guard cell increases, PEP case becomes non-functional, Accumulation of K+ in subsidary cell increasing their turgor pressure.

Topic: Biology, Transport in Plants, NEET
Which of the following is one of the common initiators used in free radical addition polymerisation?

Options:
A Benzene
B Benzoyl Peroxide
C Hydrogen Sulphide
D Potassium Chloride

The correct answer is:
Benzoyl Peroxide

Solution:
Correct Option is : (B)
Benzoyl Peroxide

Topic: Chemistry, Polymers, NEET
Which of the following is only present in RNA?

Options:
A 5-methyl uracil
B 2,4 dioxy uridylate
C 6-amino purine
D 2-amino 6-oxy purine

The correct answer is:
2,4 dioxy uridylate

Solution:
RNA is made up of four nucleotides adenylic acid, guanylic acid, cytidylic acid and uridylic acid. Adenylic acid, guanylic acid, and cytidylic acid are present in both DNA and RNA. But uridylic acid is present only in RNA. Instead in DNA thymidylic acid is present. Another name of thymine is 5-methyl uracil and 2,4 dioxy uridylate is also known as uracil.

Topic: Chemistry, Biomolecules, NEET
Which of the following is optical active substance?

Options:
A
B
C
D Both (A) and (B)

The correct answer is:

Solution:
In (A) and (B) plane symmetry present in the molecule which makes the molecule optical inactive In (C) phenyl group are perpendicular due to repulsion of large groups which is not in (A) hence (C) is correct answer.

Topic: Chemistry, General Organic Chemistry, NEET
Which of the following is paramagnetic?

Options:
A $\mathrm{CO}$
B $\mathrm{O}_2^{-}$
C $\mathrm{CN}^{-}$
D $\mathrm{NO}^{+}$

The correct answer is:
$\mathrm{O}_2^{-}$

Solution:
Paramagnetic species contains unpaired electrons in their molecular orbital electronic configuration.
Molecular orbital configuration of the given species is as
$$
\begin{aligned}
& \mathrm{CO}(6+8=14)=\sigma 1 s^2, \stackrel{*}{\sigma} 1 s^2, \\
& \sigma 2 s^2, \stackrel{*}{\sigma} 2 s^2, \pi 2 p_x^2 \approx \pi 2 p_y^2, \sigma 2 p_z^2
\end{aligned}
$$
(All the electrons are paired so it is diamagneitc.)
$$
\begin{aligned}
& \mathrm{O}_2^{-}(8+8+1=17) \\
& =\sigma 1 s^2, \stackrel{*}{\sigma} 1 s^2, \sigma 2 s^2, \stackrel{*}{\sigma} 2 s^2, \sigma 2 p_z^2, \pi 2 p_x^2 \\
& \approx \pi 2 p_y^2, \stackrel{*}{\pi} 2 p_x^2 \approx \stackrel{*}{\pi} 2 p_y^1
\end{aligned}
$$
It contains one unpaired electron so it is paramagnetic.
$$
\begin{aligned}
& \mathrm{CN}^{-}(6+7+1=14)=\text { same as } \mathrm{CO} \\
& \mathrm{NO}^{+}(7+8-1)=\text { same as } \mathrm{CO}
\end{aligned}
$$
Thus, among the given species only $\mathrm{O}_2^{-}$is paramagnetic.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET, NEET 2013 (All India)
Which of the following is paramagnetic?

Options:
A $\mathrm{N}_2$
B $\mathrm{H}_2$
C $\mathrm{Li}_2$
D $\mathrm{O}_2$

The correct answer is:
$\mathrm{O}_2$

Solution:
Key Idea If all the electron in a molecule are paired, the molecule is diamagnetic and if there are unpaired electrons in a molecule, it is paramagnetic.
Molecular orbital configuration of given molecules are as follows:
(1) $\mathrm{N}_2(\mathrm{Z}=14)-\sigma \mathrm{ls}^2, \sigma^* 1 \mathrm{~s}^2, \sigma 2 \mathrm{~s}^2, \sigma{ }^* 2 \mathrm{~s}^2, \pi 2 \mathrm{p}_{\mathrm{x}}^2$ $=\pi 2 \mathrm{p}_{\mathrm{y}}^2, \sigma 2 \mathrm{p}_{\mathrm{z}}^2$
It is a diamagnetic molecule due to absence of unpaired electron.
(2) $\mathrm{H}_2(\mathrm{Z}=2)-1 \sigma^2$
It is a diamagnetic molecule.
(3) $\mathrm{Li}_2(\mathrm{Z}=6)-\sigma \mathrm{ls}^2, \sigma{ }^* 1 \mathrm{~s}^2, \sigma 2 \mathrm{~s}^2$
It is a diamagnetic molecule.
(4) $\mathrm{O}_2(\mathrm{Z}=16)-\sigma \mathrm{ls}^2, \sigma{ }^* 1 \mathrm{~s}^2, \sigma 2 \mathrm{~s}^2, \sigma * 2 \mathrm{~s}^2$,
$$
\sigma 2 p_z^2, \pi 2 p_x^2=\pi 2 p_y^2, \pi * 2 p_x^1=\pi * 2 p_y^1
$$
It is a paramagnetic molecule due to presence of unpaired electrons in each orbital of degenerate levels.
Thus, option (4) is correct.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET, NEET 2019 (Odisha)
Which of the following is paramagnetic?

Options:
A O2
B CN-
C CO
D NO+

The correct answer is:
O2

Solution:
MO electronic configuration of O 2 is
σ 1 s 2 , σ 1 * s 2 , σ 2 s 2 , σ 2 * s 2
σ 2 p z 2 , π 2 p x 2 , π 2 p y 2 , π 2 * p y 1 , π 2 * p x 1
Due to presence of unpaired electron in ABMO π 2 * px & π 2 * py behaves paramagnetic.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which of the following is phosphinic acid?

Options:
A H3PO3
B H3PO4
C H3PO2
D H4P2O5

The correct answer is:
H3PO2

Solution:
Correct Option is : 3
H3PO2

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which of the following is phosphonic acid?

Options:
A H4P2O7
B H4P2O6
C H3PO4
D H3PO3

The correct answer is:
H3PO3

Solution:
Correct Option is : 4
H3PO3

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET