datavorous/entrance-exam-dataset huggingface dataset:
Which statement explains the increase in stability of oxoacids of chlorine in the given order (HClO < HClO2< HClO3< HClO4)?

Options:
A Oxygen atoms attached to chlorine are more electronegative. The number of oxygen atom attached to chlorine increases
B Oxygen atoms attached to chlorine are more electronegative. The number of chlorine atoms attached to oxygen increases.
C The concentration of hydrogen ions increases.
D The size of the chlorine atom decreases.

The correct answer is:
Oxygen atoms attached to chlorine are more electronegative. The number of oxygen atom attached to chlorine increases

Solution:
Correct Option is : (A)
Oxygen atoms attached to chlorine are more electronegative. The number of oxygen atom attached to chlorine increases

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which statement explains why DNA replication is described as semi-conservative?

Options:
A Half of each original strand is conserved in each new molecule of DNA.
B Half of the base sequence of each strand is conserved in each new molecule of DNA.
C Only one strand of DNA is used as a template during replication.
D The template for each new strand of DNA molecule is one strand of the original molecule

The correct answer is:
The template for each new strand of DNA molecule is one strand of the original molecule

Solution:
The two strands would separate and act as a template for the synthesis of new complementary strands. After the completion of replication, each DNA molecule would have one parental and one newly synthesised strand.
The Meselson-Stahl experiment confirmed that DNA replicated semi-conservatively.

Topic: Biology, Molecular Basis of Inheritance, NEET
Which statement from below is correct regarding the five kingdom system of classification?

Options:
A Kingdom Protista has brought together Chlamydomonas and Chlorella with Paramoecium and Amoeba.
B Kingdom Protista has brought together Chlamydomonas and Spirogyra with Paramoecium and Amoeba.
C Five kingdom system of classification brought together the prokaryotic bacteria and blue green algae with other groups which were eukaryotic.
D Kingdom Fungi has brought together all heterotrophic organisms.

The correct answer is:
Kingdom Protista has brought together Chlamydomonas and Chlorella with Paramoecium and Amoeba.

Solution:
Chlamydomonas and Chlorella are unicellular eukaryotic photosynthetic organisms. Earlier they were classified under Plantae and were considered unicellular algae. Paramoecium and Amoeba are unicellular eukaryotic heterotrophic organisms. Earlier they were classified under Animalia and were considered protozoans. In the five kingdom classification, all unicellular eukaryotic organisms have been placed under kingdom Protista. Thus Paramoecium, Amoeba, Chlorella and Chlamydomonas have been placed under the same kingdom

Topic: Biology, The Living World, NEET
Which statement in the following is correct?

Options:
A Cellulose are linear polymers of β- glucose molecules with β-1,4- linkages
B Starches are polymers of α- glucose molecules with β-1,4- linkages and some β-1,6- cross-linkages
C Proteins are polyamides of β- amino acids
D The structural information about carbohydrate biosynthesis is contained in a class of compounds called nucleic acids, e.g. RNA and DNA

The correct answer is:
Cellulose are linear polymers of β- glucose molecules with β-1,4- linkages

Solution:
Cellulose is polymers of β- glucose with β-1,4- linkages while Starches are polymers of α- glucose molecules with α-1,4- linkages and α-1,6- cross-linkages. Proteins are polymers of α- amino acids

Topic: Chemistry, Polymers, NEET
Which statement is correct about the disorder of skeletal or muscular system?

Options:
A Muscular dystrophy - Age-related shortening of muscles.
B Osteoporosis - Decrease in bone mass and a higher chance of fractures with advancing age.
C Myasthenia gravis - Autoimmune disorder which inhibits sliding of myosin filaments.
D Gout - Inflammation of joints due to extra deposition of calcium.

The correct answer is:
Osteoporosis - Decrease in bone mass and a higher chance of fractures with advancing age.

Solution:
Major causative factors of osteoporosis are imbalances of hormones like calcitonin of thyroid, parathormone of parathyroids, sex hormones, deficiencies of calcium and vitamin D.
Gout- It is a disease which includes metatarsal phalangeal joint inflammation due to deposition of uric acid.
Muscular dystrophy - It is a muscle disease that weakens the musculoskeletal system & locomotion. It includes defects in muscle protein & death of muscle cells & tissues, also known as Duchenne syndrome.
Myasthenia gravis - is an autoimmune disorder leading to muscle weakness & fatigue..

Topic: Biology, Locomotion and Movement, NEET
Which statement is correct for bacterial transduction?

Options:
A Transfer of some genes from one bacteria to another bacteria through virus
B Transfer of some genes from one bacteria to another bacteria by conjugation
C Bacteria obtained its DNA directly
D Bacteria obtained DNA from other external

The correct answer is:
Transfer of some genes from one bacteria to another bacteria through virus

Solution:
After forming the bridge, the bacterial DNA moves from one bacterium to another. The bacterium takes up the DNA floating in the environment by the process of transformation. Thus, transduction is carried out using a host called the bacteriophage.
Related Theory
Transduction, a process of genetic recombination in bacteria in which genes from $a$ host cell (a bacterium) are incorporated into the genome of a bacterial virus (bacteriophage) and then carried to another host cell when the bacteriophage initiates another cycle of infection.

Topic: Biology, Molecular Basis of Inheritance, NEET, NEET 2002
Which statement is correct regarding the epithelia of small intestine and PCT?

Options:
A Both are having compund columnar epithelia with microvilli
B Both are having stratified columnar epithelial cells
C Both are having simple epithelia with microvilli
D Both are having stratified epithelia but cells are of different shapes.

The correct answer is:
Both are having simple epithelia with microvilli

Solution:
Simple epithelia are found in the lining of the small intestine (simple columnar epithelium with brush border) and PCT (simple cuboidal epithelium with brush border).

Topic: Biology, Structural Organisation in Animals, NEET
Which statement is false for the periodic classification of elements?

Options:
A The properties of the elements are the periodic functions of their atomic numbers
B Non-metallic elements are lesser in number than the metallic elements
C The first ionization energies of the elements along a period do not vary in a regular manner with increase in atomic number
D For transition elements, the d-electrons are filled monotonically with increase in atomic number

The correct answer is:
For transition elements, the d-electrons are filled monotonically with increase in atomic number

Solution:
According to laws of writing electronic configuration, electrons are added one at a time to the penultimate d-orbitals but due to extra stability of d5 and d10 configurations, two electrons appears to have entered the d-shell due to shifting of one electron from ns to (n-1)d orbital.
Rest other statements are correct here.

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Which statement is incorrect?

Options:
A All reversible cycles have same efficiency
B Reversible cycle has more efficiency than an irreversible one
C Carnot cycle is a reversible one
D Carnot cycle has the maximum efficiency in all cycles

The correct answer is:
All reversible cycles have same efficiency

Solution:
All reversible cycles do not have same efficiency.

Topic: Physics, Thermodynamics, NEET
Which statement is incorrect about peptide bond?

Options:
A C-N bond length in proteins is longer than usual bond length of C-N bond
B Spectroscopic analysis shows planar structure of -C||O-NH- bond
C C-N bond length in proteins is smaller than usual bond length of C-N bond
D None of these

The correct answer is:
C-N bond length in proteins is longer than usual bond length of C-N bond

Solution:
Here statement in option A is incorrect as due to resonance bond length of C-N bond gets shorter.
Rest other statements are correct.

Topic: Chemistry, Biomolecules, NEET
Which statement is incorrect for post mitotic gap phase of interphase?

Options:
A In this phase, cell is metabolically active and grows continuously.
B It involves replication of RNA, DNA and proteins.
C Cell organelles increase in number
D The cell has an option to stop cell cycle and undergo differentiation.

The correct answer is:
It involves replication of RNA, DNA and proteins.

Solution:
Interphase is the first growth stage after cell division. Three stages occur during interphase i.e.G1, S, and G2 stage wherein G1 stage cells mature by making more cytoplasm and cell organelles. S phase is called the post-mitotic gap phase and during that phase, the cell synthesizes enzyme and energy needed for DNA duplication. It occurs between the G1 and G2 phases of the interphase. In the G2 phase, all cell structures needed for cell division are made. Example: centriole. So the incorrect option is B.

Topic: Biology, Cell Cycle and Cell Division, NEET
Which statement is incorrect –

Options:
A NiCO4– Tetrahedral, paramagnetic
B NiCN4]2-– Square planar, diamagnetic
C NiCO4– Tetrahedral, diamagnetic
D NiCl4–2– Tetrahedral, paramagnetic

The correct answer is:
NiCO4– Tetrahedral, paramagnetic

Solution:
Electronic configuration of Ni=4s23d8 .
CO is strong ligand causes inward pairing, thus it is sp3 hybridised.
Ni(CO)4 is tetrahedral and diamagnetic

Topic: Chemistry, Coordination Compounds, NEET
Which statement is NOT correct?
(According to Valence bond theory)

Options:
A A sigma(σ) bond is weaker than a π-bond
B A sigma bond is stronger than a π-bond
C A double bond is stronger than a single bond
D A double bond is shorter than a single bond

The correct answer is:
A sigma(σ) bond is weaker than a π-bond

Solution:
A Ï- bond is stronger than a Ï- bond.
Sigma Ï bonds are formed by head on overlap of unhybridised s-s, p-p or s-p orbitals and hybridized orbitals sp, sp2, sp3, sp3d and sp3d2 . Hence, Ï bond are strong bonds. Where as Pi Ï- bonds are formed by side ways overlap of unhybridised p and d orbitals. Hence Ï bonds are weak bonds.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which statement is not related to S-shaped population curve?

Options:
A Environmental resistance suddenly become effective
B Exponential phase is followed by decline phase
C Mass mortality and population crash occurs
D Both (a) and (c)

The correct answer is:
Both (a) and (c)

Solution:
S-shaped growth curve (sigmoid growth curve) A pattern of growth in which, in a new environment, the population density of an organism increases slowly initially, in a positive acceleration phase; then increases rapidly approaching an exponential growth rate as in the J-shaped curve; but then declines in a negative acceleration phase until at zero growth rate the population stabilizes. This slowing of the rate of growth reflects increasing environmental resistance which becomes proportionately more important at higher population densities. Hence the statement, “both environmental resistance suddenly become effective and Mass mortality and population crash occurs” is not related to S-shaped population curve.

Topic: Biology, Organisms and Populations, NEET
Which statement is not true about photochemical smog?

Options:
A Photochemical smog occurs in warm, dry and sunny climate.
B Common components of photochemical smog are ozone, nitric oxide, acrolein, formaldehyde and peroxvacetyl nitrate.
C Photochemical smog is harmful to humans but has no effect on plants.
D Plants like Pinus, Juniparus can help in reducing the photochemical smog.

The correct answer is:
Photochemical smog is harmful to humans but has no effect on plants.

Solution:
- Photochemical smog is harmful to humans as well as plants so option (3) is incorrect.
- Photochemical smog occurs in warm, dry and sunny climate.

Topic: Chemistry, Environmental Chemistry, NEET, NEET 2023 (Manipur)
Which statement is not true for Drosophila melanogaster?

Options:
A They complete their life cycle in about two weeks.
B Single mating produce a large number of progeny flies.
C It has few hereditary variations that can be seen with a high power microscope.
D It has a clear differentiation of the sex.

The correct answer is:
It has few hereditary variations that can be seen with a high power microscope.

Solution:
Drosophila Melanogaster, the fruit fly, is a great organism for genetic use because it has simple food requirements, occupies little space, completes its life cycle in 12 days, makes a large number of offspring, can be knocked out easily, and it has many types of hereditary variations that can be seen with low power microscopes. Drosophila has a small number of chromosomes, four pairs. They are easily located in the large salivary glands.

Topic: Biology, Principles of Inheritance and Variation, NEET
Which statement is not true for the base ratio of DNA?

Options:
A Base ratio is constant for a given species.
B Base ratio is variable for different species.
C Base ratio does not depend on age of organism
D Base ratio is different for different tissues of organism.

The correct answer is:
Base ratio is different for different tissues of organism.

Solution:
According to Chargaff' rule ratio of A+T/G+C is called base ratio and it is specific for a given species but variable for different species. For prokaryotic species it if less than 1 and for eukaryotic species it is greater than 1.

Topic: Biology, Molecular Basis of Inheritance, NEET
Which statement is true for cyclohexane?

Options:
A It has two possible isomers
B It has three conformations
C Boat conformation is most stable
D Chair and boat conformations differ in energy by 44 kJ/mol

The correct answer is:
Chair and boat conformations differ in energy by 44 kJ/mol

Solution:
Chair and boat conformations of cyclohexane differ in energy by
44  kJmol −1

Topic: Chemistry, General Organic Chemistry, NEET
Which statement is true in regard to a spontaneous redox reaction?

Options:
A Ered is always negative
B Ecell is always positive
C Eox is always positive
D Ered is always positive

The correct answer is:
Ecell is always positive

Solution:
ΔG = −nFEcell
If Ecell is +ve, then ΔG will be –ve showing that cell reaction is spontaneous.

Topic: Chemistry, Thermodynamics (C), NEET
Which statement is true regarding the properties of materials?

Options:
A The Young's modulus of rubber is greater than that of steel.
B The stretching of a coil is determined by its shear modulus.
C Both statements (a) and (b) are true.
D Both statements (a) and (b) are false.

The correct answer is:
The stretching of a coil is determined by its shear modulus.

Solution:
Correct Option is : (B)
The stretching of a coil is determined by its shear modulus.

Topic: Chemistry, Mechanical Properties of Solids, NEET
Which statement is wrong?

Options:
A Beryl is an example of cyclic silicate
B Mg2SiO4 is orthosilicate
C Basic structural unit in silicates is the SiO 4 4− tetrahedron
D Feldspars are not aluminosilicates

The correct answer is:
Feldspars are not aluminosilicates

Solution:
As Feldspars are three dimensional aluminosilicates so statement D is incorrect here.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
Which statement is wrong?

Options:
A Beryl is an example of cyclic silicate
B $\mathrm{Mg}_2 \mathrm{SiO}_4$ is orthosilicate
C Basic structural unit in silicates is the $\mathrm{SiO}_4$ tetrahedron
D Feldspars are not aluminosilicates

The correct answer is:
Feldspars are not aluminosilicates

Solution:
Feldspars are 3-D aluminosilicates.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET, NEET 2013 (Karnataka)
Which statement is wrong for Krebs' cycle?

Options:
A There are three points in the cycle where NAD+ is reduced to NADH + H+
B There is one point in the cycle where FAD+ is reduced to FADH2
C During conversion of succinyl CoA to succinic acid, a molecule of GTP is synthesised
D The cycle starts with condensation of an acetyl group (acetyl CoA) with pyruvic acid to yield citric acid

The correct answer is:
The cycle starts with condensation of an acetyl group (acetyl CoA) with pyruvic acid to yield citric acid

Solution:
The cycle starts with condensation of an acetyl group (acetyl CoA) with pyruvic acid to yield citric acid is incorrect, which can be corrected as Krebs' cycle starts with the condensation of acetyl group with oxaloacetic acid and water yield citric acid.
During the conversion of succinic acid fumaric acid FAD+ Is reduced to FADH2. During conversion of pyruvic acid to acetyl Co- A, isocitrate to oxalosuccinic acid and α-ketoglutaric acid to succinyl Co-ANAD+ is reduced to NADPH+ H+

Topic: Biology, Respiration in Plants, NEET, NEET 2017
Which statement is wrong?

Options:
A Partial pressure of CO2 (PCO2,) is higher in the air inside the lungs
B Partial pressure of O2 (PO2 ) is higher in the air inside the lungs
C Partial pressure of O2 (PO2) is lower inside the venous blood than in the air in the lung
D Partial pressure of CO2 (PCO2) is higher inside the venous blood than in the air

The correct answer is:
Partial pressure of CO2 (PCO2,) is higher in the air inside the lungs

Solution:
Partial pressure of O2 in the atmospheric air is 158 mm of Hg and that of CO2 is 0.3 mm of Hg. Partial pressure of oxygen PO2 in alveolar air is 100 mm Hg and it is only 40 mm Hg in the arterial capillaries of the lungs. Therefore, oxygen from the alveolar air rapidly diffuses due to its higher PO2 into the blood capillaries. Hence, Partial pressure of CO2 (PCO2) is lower in the air inside the lungs.

Topic: Biology, Breathing and Exchange of Gases, NEET
Which statement of the following is incorrect for gases?

Options:
A Volume of the gas is equal to the volume of the container confining the gas
B Confined gas exerts uniform pressure on the walls of its container in all directions
C Gases do not have a definite shape and volume
D Mass of the gas cannot be determined by weighing a container in which it is enclosed

The correct answer is:
Mass of the gas cannot be determined by weighing a container in which it is enclosed

Solution:
The mass of gas can be determined by weighing the container, filled with gas and again weighing this container after removing the gas. The difference between the two weights gives the mass of the gas.

Topic: Chemistry, States of Matter, NEET
Which statement regarding coenzyme is incorrect?

Options:
A Every cofactor is a coenzyme and every coenzyme is a cofactor
B Every coenzyme is a cofactor but every cofactor is not a coenzyme
C Most of the coenzymes are nucleotides and are composed of vitamins
D Coenzymes are the active constituents of enzymes

The correct answer is:
Every coenzyme is a cofactor but every cofactor is not a coenzyme

Solution:
Every coenzyme is a cofactor but every cofactor is not coenzyme.
Cofactors can be classified depending on how tightly they bind to an enzyme, with loosely bound cofactors termed coenzymes and tightly bound cofactors termed prosthetic groups.

Topic: Chemistry, Biomolecules, NEET
Which statement regarding polymers is not correct?

Options:
A Fibers possess high tensile strength.

B Thermoplastic polymers are capable of repeatedly softening and hardening on heating and cooling respectively.

C Thermosetting polymers are reusable.

D Elastomers have polymer chains held together by weak intermolecular forces.

The correct answer is:
Thermosetting polymers are reusable.

Solution:
A thermosetting polymer, often called a thermoset, is a polymer that is obtained by irreversibly hardening a soft solid or viscous liquid prepolymer.

They can't be reused.

Thermoplastic polymers are capable of repeatedly softening and hardening on heating and cooling respectively.They can be re-used.

Fibres have high tensile strength.

Elastomers have polymer chains held together by weak intermolecular forces, they have high elasticity.

Hence, option C is the correct answer.

Topic: Chemistry, Polymers, NEET, NEET 2022 (Phase 1)
Which statement verifies whether magnetic forces obey Newton's third law for two current elements dl1 located at the origin and dl2 located at (0, R, 0), both carrying current I?

Options:
A The force due to dl1 on dl2 is zero.
B The force due to dl2 on dl1 is zero.
C The forces between dl1 and dl2 are equal and opposite.
D The force on both dl1 and dl2 is zero.

The correct answer is:
The force due to dl2 on dl1 is zero.

Solution:
Correct Option is : (B)
The force due to dl2 on dl1 is zero.

Topic: Chemistry, Magnetic Effects of Current, NEET
Which statements about genetically engineered plants show potential benefits?

I. The increased yield from genetically engineered plants allows a smaller area of land to be farmed.
II. Genetically engineered plants may have improved nutritional value.
III. Some plants can be genetically modified to give resistance to diseases.
IV. There is more research needed on the long term effects of genetically engineered crops on the environment.
V. The use of genetically engineered crops may explain the increase in allergies in children.

Options:
A I, II and III only
B III, IV and V only
C II, III and IV only
D I, IV and V only

The correct answer is:
I, II and III only

Solution:
Genetically modified plants have been useful in many ways. Genetic modification has made crops more tolerant to abiotic stresses, reduced reliance on chemical pesticides and helped to reduce post-harvest losses and increase yield. It has also enhanced nutritional value of food.

Topic: Biology, Biotechnology and Its Applications, NEET
Which statements among the following are CORRECT?

I. The upper surface of the tongue has small projections called papillae, some of which bear taste buds.

II. The serosa is the innermost layer of the alimentary canal and is made up of a thin mesothelium (epithelium of visceral organs) with some connective tissues.

III. The liver is the largest gland of the body weighing about 4.2 to 5 kg in an adult human.

IV. During the process of digestion, the stomach stores the food for 2-3 hours.

Options:
A I and III
B II and IV
C I and IV
D II and III

The correct answer is:
I and IV

Solution:
The upper surface of the tongue has small projections called papillae, some of which bear taste buds (detects specific tastes) in which about 50 - 150 cells are found. The general tastes detected are sweet, sour, salty, and bitter. The serosa is the outermost layer of the alimentary canal and is made up of a thin mesothelium (epithelium of visceral organs) with some connective tissues. The liver is the largest gland that produces bile for the digestive process and weighs about 1.2 t o 1.5 k g in an adult human. During the process of digestion, the stomach stores the food for 2.5-3 hours.

Topic: Biology, Digestion and Absorption, NEET