datavorous/entrance-exam-dataset huggingface dataset:
_________is the vital link that ensures continuity of species between organism of one generation and the next.

Options:
A Zygote
B Gametes
C Meiocytes
D Embryo

The correct answer is:
Zygote

Solution:
The formation of the zygote is universal in all sexually reproducing organisms. A zygote is the first product of sexual reproduction which is formed by the fusion of male gamete with egg cell or female gamete. Every sexually reproducing organism, including human beings, begins life as a single cell the zygote.

Topic: Biology, Reproduction in Organisms, NEET
Is the work done in moving a body along a closed loop necessarily zero?

Options:
A Yes, if the forces acting on the system are conservative.
B No, work done can be non-zero even if the forces are conservative.
C Yes, work done is always zero regardless of the forces acting on the system.
D No, work done is zero only if all the forces acting on the system are conservative.

The correct answer is:
No, work done is zero only if all the forces acting on the system are conservative.

Solution:
Correct Option is : (D)
No, work done is zero only if all the forces acting on the system are conservative.

Topic: Chemistry, Work Power Energy, NEET
Is there a need for mass production of insulin if bacterium can make human insulin?

Options:
A Yes
B No
C May be
D The need depends on various factors

The correct answer is:
Yes

Solution:
If bacterium can make human insulin, then one can easily grow a large quantity of the bacteria and make as much insulin as needed.

Topic: Biology, Biotechnology and Its Applications, NEET
Is there an alternative solution to the use of agrochemicals for farmers in the developing world?

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

The correct answer is:
Yes

Solution:
The use of genetically modified crops is a possible alternative solution for farmers in the developing world to minimize the use of fertilisers and chemicals.

Topic: Biology, Biotechnology and Its Applications, NEET
Is there any change in the hybridization of B and N atoms as a result of the following reaction: BF3+ NH3→ F3B.NH3?

Options:
A The hybridization of the B atom changes from sp2to sp3, while the hybridization of the N atom changes from sp3to sp2.
B The hybridization of the B atom changes from sp2to sp3, but there is no change in the hybridization of the N atom.
C There is no change in the hybridization of either the B or N atoms in this reaction.
D The hybridization of the N atom changes from sp3to sp2, but there is no change in the hybridization of the B atom.

The correct answer is:
The hybridization of the B atom changes from sp2to sp3, but there is no change in the hybridization of the N atom.

Solution:
Correct Option is : (B)
The hybridization of the B atom changes from sp2to sp3, but there is no change in the hybridization of the N atom.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Is there any resemblance between azo dye and prontosil? Explain.

Options:
A Azo dyes and prontosil are both natural pigments found in plants and animals.
B Azo dyes and prontosil are structurally identical compounds.
C Azo dyes and prontosil both contain a nitrogen-nitrogen (N=N) double bond in their chemical structures.
D Azo dyes and prontosil are unrelated chemical compounds with different uses.

The correct answer is:
Azo dyes and prontosil both contain a nitrogen-nitrogen (N=N) double bond in their chemical structures.

Solution:
Correct Option is : (C)
Azo dyes and prontosil both contain a nitrogen-nitrogen (N=N) double bond in their chemical structures.

Topic: Chemistry, Chemistry in Everyday Life, NEET
Is there strong and persuasive circumstantial evidence for competition in nature?

Options:
A No
B Yes, in some cases
C Only in laboratory experiments
D Sometimes

The correct answer is:
Yes, in some cases

Solution:
Strong and persuasive circumstantial evidence does exist in some cases, as explained in the case of the Abingdon tortoise in Galapagos Islands.

Topic: Biology, Organisms and Populations, NEET
Is treatment of AIDS with anti-retroviral drugs effective?

Options:
A Completely effective
B Partially effective
C Not effective
D Temporary effective

The correct answer is:
Partially effective

Solution:
Treatment of AIDS with anti-retroviral drugs is only partially effective as they can only prolong the life of the patient but cannot prevent death, which is inevitable.

Topic: Biology, Human Health and Diseases, NEET
is used as:

Options:
A Antacid
B Insecticide
C Antihistamine
D Analgesic

The correct answer is:
Analgesic

Solution:
Acetyl salicylic acid is analgesic.

Topic: Chemistry, Chemistry in Everyday Life, NEET
_________ is used to produce a bioactive molecule which is used as an immunosuppressive agent in organ-transplant patients.

Options:
A Monascus
B Clostridium
C Streptococcus
D Trichoderma

The correct answer is:
Trichoderma

Solution:
Streptokinase produced by the bacterium Streptococcus and modified by genetic engineering is used as a âclot busterâ for removing clots from the blood vessels of patients who have undergone myocardial infarction leading to heart attack.
The bioactive molecule, cyclosporin A, that is used as an immunosuppressive agent in organ-transplant patients, is produced by the fungus Trichoderma polysporum. Statins produced by the yeast Monascus purpureus have been commercialised as blood-cholesterol lowering agents. It acts by competitively inhibiting the enzyme responsible for synthesis of cholesterol. Clostridium butylicum (a bacterium) produces butyric acid.

Topic: Biology, Microbes in Human Welfare, NEET
is used to speed up the malting process in the brewing industry.

Options:
A GA1
B GA2
C GA3
D GA4

The correct answer is:
GA3

Solution:
GA3 is used to speed up the malting process in brewing industry.

Topic: Biology, Plant - Growth and Development, NEET
Is viscosity a vector?

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

The correct answer is:
Yes

Solution:
Correct Option is : (A)
Yes

Topic: Chemistry, Mechanical Properties of Fluids, NEET
Is volume, mass, speed, acceleration, density, number of moles, velocity, angular frequency, displacement, and angular velocity scalar or vector quantities?

Options:
A Scalar, Scalar, Scalar, Vector, Scalar, Scalar, Vector, Vector, Vector, Vector
B Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Vector, Vector, Vector, Vector
C Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Scalar
D Scalar, Scalar, Vector, Vector, Scalar, Scalar, Vector, Vector, Vector, Vector

The correct answer is:
Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Vector, Vector, Vector, Vector

Solution:
Correct Option is : (B)
Scalar, Scalar, Scalar, Scalar, Scalar, Scalar, Vector, Vector, Vector, Vector

Topic: Chemistry, Motion In Two Dimensions, NEET
_________is/are liable to saturation, respond to inhibitor and is under hormonal regulation and moves only along a concentration gradient.

Options:
A Simple diffusion
B Facilitated transport
C Active transport
D Both facilitated and active transport

The correct answer is:
Both facilitated and active transport

Solution:
Proteins in the membrane are responsible for facilitated diffusion and active transport and hence show common characteristics of being highly selective; they are liable to saturate, respond to inhibitors and are under hormonal regulation. But diffusion whether facilitated or not â take place only along a gradient and do not use energy.

Topic: Biology, Transport in Plants, NEET
Isobars follow

Options:
A Charles law
B Boyles law
C Gaylusacs law
D None of the above

The correct answer is:
Charles law

Solution:
Correct Option is : 1
Charles law

Topic: Chemistry, States of Matter, NEET
Isochores follow

Options:
A Charles law
B Boyles law
C Gaylusacs law
D None of the above

The correct answer is:
Gaylusacs law

Solution:
Correct Option is : 3
Gaylusacs law

Topic: Chemistry, States of Matter, NEET
Isoelectric point is pH at which?

Options:
A An amino acid becomes acidic.
B An amino acid becomes basic.
C Zwitter ion has net positive charge.
D Zwitter ion has net zero charge.

The correct answer is:
Zwitter ion has net zero charge.

Solution:
The isoelectric point is the neutral state of the molecule or it is the pH of a solution that caries net zero charge or total positive charge must be equal to the total negative charge.

Zwitter ion has a net zero charges.

Topic: Chemistry, Biomolecules, NEET
Isogamous condition with non-flagellated gametes is found in

Options:
A Chlamydomonas
B Spirogyra
C Volvox
D Fucus

The correct answer is:
Spirogyra

Solution:
Isogamy is found in Spirogyra in which both gametes are non-motile. In Chlamydomonas, all three conditions, isogamy anisogamy and oogamy are found. Both motile and non-motile gametes are found. In Volvox and Fucus, oogamy is present, where non-motile egg fuses with matile sperm.

Topic: Biology, Plant Kingdom, NEET, NEET 2013 (All India)
Isogamous condition with non-motile gametes is found in:

Options:
A Fucus
B Chlamydomonas
C Ulothrix
D Spirogyra

The correct answer is:
Spirogyra

Solution:
Fucus is a brown alga which shows oogamous reproduction. Chlamydomonas, Ulothrix and Spirogyra are green algae which shows isogamous condition, but in Spirogyra, the flagellated condition is completely absent in the life cycle thus it forms non-motile gametes.

Topic: Biology, Plant Kingdom, NEET
Isogamous reproduction and flagellated gametes can be observed in

Options:
A Polysiphonia
B Fucus
C Ulothrix
D Spirogyra

The correct answer is:
Ulothrix

Solution:
Sexual reproduction takes place through the fusion of two gametes. These gametes can be flagellated and similar in size (as in Ulothrix) or non-flagellated (non-motile) but similar in size (as in Spirogyra). Such reproduction is called isogamous.

Topic: Biology, Plant Kingdom, NEET, NEET 2015 (Phase 1)
Isogamous reproduction and flagellated gametes can be observed in

Options:
A Polysiphonia
B Fucus
C Ulothrix
D Spirogyra

The correct answer is:
Ulothrix

Solution:
Sexual reproduction takes place through the fusion of two gametes. These gametes can be flagellated and similar in size (as in Ulothrix) or non-flagellated (non-motile) but similar in size (as in Spirogyra). Such reproduction is called isogamous.

Topic: Biology, Plant Kingdom, NEET
Isolated protoplasts from two different varieties of plants, each having a desirable character can be fused to get hybrid protoplasts. These hybrids are called as

Options:
A Somaclones
B Somatic hybrids
C Gametic hybrids
D Cytoplasmic hybrids

The correct answer is:
Somatic hybrids

Solution:
Isolated protoplasts from two different varieties of plants, each having a desirable character can be fused to get hybrid protoplasts, which can be further grown to form a new plant. These hybrids are called somatic hybrids while the process is called somatic hybridization.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
Isolated protoplasts from two different varieties of plants each having a desirable character can be fused to get hybrid protoplasts, which can be further grown to form a new plant. These hybrids are called:

Options:
A Somatic hybridization
B Somatic hybrid
C Totipotent
D SCP

The correct answer is:
Somatic hybrid

Solution:
Plant cells without cell wall are called protoplast. Protoplasts of two different plant can be fused to obtain a hybrid protoplast and grown into a new plant. Such process is called as somatic hybridization since somatic cells are used for fusion and not gametic cells. The hybrids formed from such technique are called somatic hybrid. Totipotency is the ability of a cell to grow into a complete organism. Embryo cells are totipotent. SCP-Single cell proteins are the proteins obtained from culture of single-celled organisms.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
Isomerisms exhibited by [Cr(NH3)2(H2O)2 Cl2]+ are

Options:
A Ionisation, optical
B Hydrate, optical
C Geometrical, optical
D Coordinate, geometrical

The correct answer is:
Geometrical, optical

Solution:
MA2B2C2+ type complexes show geometrical isomerism.
Cis-form of complex does not possess any element of symmetry, so it will exhibit optical activity. Thus, it shows optical isomerism

Topic: Chemistry, Coordination Compounds, NEET
Isomers which can be interconverted through rotation around a single bond are

Options:
A diastereomers
B conformers
C enantiomers
D positional isomers

The correct answer is:
conformers

Solution:
A bond between two carbon atoms is formed by the overlap of s p 3 hybrid orbitals of carbon atoms along their internuclear axis as a result of which the electron distribution within the molecular orbital thus formed is cylindrically symmetrical along the internuclear axis. Due to this symmetry, rotation about carbon-carbon single bond is free, as a result number of momentary arrangements of atoms called conformations or rotational isomers.
Example: The two conformation of ethane are possible.
Conformers can be interconverted through rotation about C-C bond.

Topic: Chemistry, General Organic Chemistry, NEET
Isopropyl alcohol on oxidation forms

Options:
A Acetone
B Ether
C Ethylene
D Acetaldehyde

The correct answer is:
Acetone

Solution:

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
Isotherms follow

Options:
A Charles law
B Boyles law
C Gaylusacs law
D None of the above

The correct answer is:
Boyles law

Solution:
Correct Option is : 2
Boyles law

Topic: Chemistry, States of Matter, NEET
Isotherms of carbon dioxide at various temperatures are represented in Fig.. Answer the following questions based on this figure
At what point will CO2start liquefying when temperature is T1?

Options:
A Point b
B Point d
C Point c
D Point a

The correct answer is:
Point b

Solution:
Correct Option is : (A)
Point b

Topic: Chemistry, States of Matter, NEET
Isotherms of carbon dioxide at various temperatures are represented in Fig.. Answer the following questions based on this figure
At what point will CO2be completely liquefied when temperature is T2.

Options:
A Point h
B Point f
C Point e
D Point g

The correct answer is:
Point g

Solution:
Correct Option is : (D)
Point g

Topic: Chemistry, States of Matter, NEET
Isotherms of carbon dioxide at various temperatures are represented in Fig.. Answer the following questions based on this figure.
In which state will CO2exist between the points a and b at temperature T1?

Options:
A solid
B liquid
C gaseous
D cannot determine

The correct answer is:
gaseous

Solution:
Correct Option is : (C)
gaseous

Topic: Chemistry, States of Matter, NEET
Isotherms of carbon dioxide at various temperatures are represented in Fig.. Answer the following questions based on this figure
What portion of the isotherm at T1represent liquid and gaseous CO2at equilibrium?

Options:
A between b and d.
B between b and c.
C between a and b.
D between a and c.

The correct answer is:
between b and c.

Solution:
Correct Option is : (B)
between b and c.

Topic: Chemistry, States of Matter, NEET
Isotherms of carbon dioxide at various temperatures are represented in Fig.. Answer the following questions based on this figure
Will condensation take place when the temperature is T3.

Options:
A Yes
B No, since T3< Tc
C No, since T3> Tc
D Cannot determine

The correct answer is:
No, since T3> Tc

Solution:
Correct Option is : (C)
No, since T3> Tc

Topic: Chemistry, States of Matter, NEET
Isotonic solutions have same

Options:
A vapour pressure
B freezing temperature
C osmotic pressure
D boiling temperature

The correct answer is:
osmotic pressure

Solution:
An isotonic solution refers to two solutions having the same osmotic pressure across a semipermeable membrane. This state allows for the free movement of water across the membrane without changing the concentration of solutes on either side.

Topic: Chemistry, Solutions, NEET, NEET 2020 (Phase 2)
It has been found in many cells that ribosomes occur in chains along mRNA molecules. What is the advantage of this arrangement as compared to a situation in which ribosomes occur singly

Options:
A Fewer tRNA molecules are used in protein synthesis
B Polypeptides can be produced more easily
C A greater variety of polypeptides can be produced
D Probability of gene mutation occurring is less

The correct answer is:
Polypeptides can be produced more easily

Solution:
A polypeptide can be produced more easily; when ribosomes occur in chains then the probability of formation of the polypeptide is increased because polypeptide is made up of amino acids that are present on tRNA and tRNA attached with ribosomes plays a vital role in protein synthesis.

Topic: Biology, Molecular Basis of Inheritance, NEET
It has been found that the domestic horses have 64 chromosomes in their cell. Predict the number of chromosomes in the egg cell of a female horse.

Options:
A 16
B 32
C 64
D 128

The correct answer is:
32

Solution:
Egg cells are a type of gametes that participates in the process of sexual reproduction. These cells are known to have half the chromosome content compared to other somatic cells. These cells are formed by undergoing meiotic divisions which reduce the chromosome set from diploid to haploid. Since, the diploid cell of the horse if having 64 chromosomes, then its egg cell (gametic cell) will have half that is 32 chromosome.

Topic: Biology, Cell Cycle and Cell Division, NEET
It has been observed that, colorless cells are modified from the adaxial epidermal cells of leaf in grasses near the veins. What are these modified cells called as?

Options:
A Heterocysts
B Bulliform cells
C Companion cells
D Trichomes

The correct answer is:
Bulliform cells

Solution:
Bulliform cells spread around the leaf on the upper surface play a role for water storage. These cells assist during transpiration process to reduce water loss. During stress, these cells lose water causing the leaves to curl and prevent damage. They are commonly found in the grasses.

Topic: Biology, Anatomy of Flowering Plants, NEET
It is because of the inability of ns2 electrons of the valence shell to participate in bonding that

Options:
A Sn2+ is reducing while Pb4+ is oxidizing.
B Sn2+ is oxidizing while Pb4+ is reducing.
C Sn2+ and Pb2+ are both oxidizing and reducing.
D Sn4+ is reducing while Pb4+ is oxidizing.

The correct answer is:
Sn2+ is reducing while Pb4+ is oxidizing.

Solution:
The inability of ns2 electrons of the valence shell to participate in bonding on moving down the group in heavier p-block elements is called inert pair effect.
As a result, Pb(II) is more stable than Pb(IV)
Sn(IV) is more stable than Sn(II)
∴ Pb(IV) is easily reduced to Pb(II).
∴ Pb(IV) is an oxidizing agent.
Sn(II) is easily oxidized to Sn(IV)
∴ Sn(II) is reducing agent.

Topic: Chemistry, d and f Block Elements, NEET, NEET 2017
It is desired to make a converging achromatic combination of mean focal length 50 cm by using two lenses of materials A and B. If the dispersive power of A and B are in ratio 1:2, the focal lengths of the convex and the concave lenses are respectively

Options:
A 25âcm and 50âcm
B 50 cmand 25 cm
C 50 cmand 100 cm
D 100 cmand 50 cm

The correct answer is:
25 cm and 50 cm

Solution:
Ï1Ï2=12
Now, f1f2=-Ï1Ï2=-12
Or f2=-2f1
Now, 1F=1f1+1f2
150=1f1+1-2f1
Or 50f=-2+1-2f1=12f1
Or 2f1=50 or f1=25 cm
Again f2=â2Ã25 cm
f2=â50 cm

Topic: Physics, Ray Optics, NEET
It is easier to liquefy ammonia than oxygen because

Options:
A it is easier to compress oxygen than NH3
B NH3 has a very low critical temperature as compared to O2
C O2 has higher value of Van der Waal's constant a and higher critical temperature than NH3
D NH3 has a higher value of Van der Waals constant a and higher critical temperature than oxygen

The correct answer is:
NH3 has a higher value of Van der Waals constant a and higher critical temperature than oxygen

Solution:
NH3 has higher value of a, it means intermolecular forces are stronger and higher critical temperature than oxygen, hence easy to liquefy.

Topic: Chemistry, States of Matter, NEET
It is found that all electromagnetic signals sent from A towards B reach point C. The speed of electromagnetic signals in glass cannot be

Options:
A 1.0×108 m s-1
B 2.15Ã108 m s-1
C 2×107 m s-1
D 4×107 m s-1

The correct answer is:
2.15Ã108 m s-1

Solution:
There TIR at B,
i>iC
â´ 45o>sin-1â¡1Î¼
â´ 45o>sin-1â¡vgc
â´ sinâ¡45Â°> vgC
â´ vg<cÃsinâ¡45Â°
â´ vg<3Ã108Ã12
â´ vg<2.14Ã108 m s-1

Topic: Physics, Ray Optics, NEET
It is known that exposure to carbon monoxide is harmful to animals because

Options:
A It reduces CO₂ transport
B It reduces O₂ transport
C It increases CO₂ transport
D It increases O₂ transport

The correct answer is:
It increases CO₂ transport

Solution:
Carbon monoxide increases CO₂ transport.

Topic: Biology, Breathing and Exchange of Gases, NEET
It is more convenient to obtain the molecular weight of an unknown solute by measuring the freezing point depression than by measuring the boiling point elevation because

Options:
A Freezing point depression is a colligative property whereas boiling point elevation is not.
B Freezing point depressions are larger than boiling point elevations for the same solution.
C Freezing point depressions are smaller than boiling point elevations for the same solution.
D Freezing point depression depends more on the amount of the solute than boiling point elevation.

The correct answer is:
Freezing point depressions are larger than boiling point elevations for the same solution.

Solution:
It is more convenient to obtain the molecular weight of an unknown solute by measuring the freezing point depression than by measuring the boiling point elevation because, for a same solution ∆Tf is larger than ∆Tb

Topic: Chemistry, Solutions, NEET
It is much easier for a small animal to run uphill than for a large animal, because:

Options:
A It is easier to carry a small body weight.
B Smaller animals have a higher metabolic rate.
C Small animals have a lower O2 requirement
D The efficiency of muscles in large animals is less than in the small animals.

The correct answer is:
Smaller animals have a higher metabolic rate.

Solution:
Smaller animals have higher BMR related to sustained energy production and delayed muscle fatigue. BMR is the rate of energy expenditure per unit time by endothermic animals at rest.

Topic: Biology, Biomolecules (B), NEET, NEET 2016 (Phase 1)
It is observed that heart cells do not exhibit cell division. Such cells do not divide further and exit phase to enter an inactive stage called the cell cycle. Name the cycle.

Options:
A G
B G2
C G0
D S phase

The correct answer is:
G0

Solution:
These cells that do not divide further exit the G0 phase to enter an inactive stage called the quiescent stage (G0) of the cell cycle. The G0 stage of a cell denotes the exit of a cell from the cell cycle.

Topic: Biology, Cell Cycle and Cell Division, NEET
It is said that birds have evolved from:

Options:
A Non-chordates
B Reptiles
C Amphibians
D Fishes

The correct answer is:
Reptiles

Solution:
Reptiles have given rise to aves and mammals.

Birds have often been called "glorified reptiles". Although the birds are grouped as a separate vertebrate class "Aves", apart from the power of flight and features which are connected with it, they are structurally similar to reptiles. In many regards, they are no feather removed from the general reptilian stock, then are some of the ruling reptiles from which they evolved.

Topic: Biology, Evolution, NEET