datavorous/entrance-exam-dataset huggingface dataset:
Which statements are CORRECT?

a. Cytokinins suppress the synthesis of chlorophyll.
b. Auxins cause apical dominance.
c. Gibberellin promotes shoot elongation.
d. Abscisic acid enables seeds to withstand desiccation.

Options:
A c and b only
B b and c only
C a and c only
D b, c and d only

The correct answer is:
b, c and d only

Solution:
One of the important hormones as growth regulator in plants is the gibberellins. It is a type of promotory hormones. One of the effects of this hormone is the increase in the axis of the stem.
Auxins are one the growth promoters found in plants. These are mostly produces by the apical parts of roots and stems and from there move to different parts of plant as per need. Indole-3-acetic acid(IAA) and indole butyric acid(IBA) are produced by plant and have been isolated as natural auxins.
Cytokinin is a group of plant growth regulator that promotes cell division. Kinetin is a type of cytokinin which is a modified purine discovered in autoclaved herring sperm DNA. These help in leaves production, chloroplast production. These chemicals have an impact on the cytokinesis process.
Abscisic acid was discovered for its role in abscission and dormancy. It stimulates stomata closure and helps tolerate various types of stress. It helps the seed to withstand desiccation and other unfavorable conditions. It is called as the stress hormone.

Topic: Biology, Plant - Growth and Development, NEET
Which statements are correct about the following disaccharide?

Options:
A Ring A is a hemiacetal in the β -configuration, ring B is an acetal in the α -configuration
B Ring A is a hemiacetal in the α -configuration, ring B is an acetal in the β -configuration
C Ring A is an acetal in the β -configuration, ring B is a hemiacetal in the α -configuration
D Ring A is an acetal in the α -configuration, ring B is a hemiacetal in the β -configuration

The correct answer is:
Ring A is an acetal in the α -configuration, ring B is a hemiacetal in the β -configuration

Solution:

Topic: Chemistry, Biomolecules, NEET
Which statements are correct for the peroxide ion?
1 It has five completely filled anti-bonding molecular orbitals
2 It is diamagnetic
3 It has bond order one
4 It is isoelectronic with neon

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

The correct answer is:
2, 3

Solution:
O22-(18):(σ1s)2(σ*1s)2(σ*2s)2(σ2pz)2(π2px)2(π2py)2(π*px)2(π*2py)2
So, no unpaired electrons = diamagnetic
Bond order =10-82=1

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which statements are incorrect about transition elements?

Options:
A They show variable valency
B They readily form complex compounds
C All their ions are colourless
D Their ions contain partially filled d-orbital

The correct answer is:
All their ions are colourless

Solution:
"All their ions are colourless" this is incorrect because about 90% of ions are coloured and only few are colourless.

Topic: Chemistry, d and f Block Elements, NEET
Which statements is incorrect among the following?

Options:
A Calamine and siderite are carbonates
B Argentite and cuprite are oxides
C Zinc blende and pyrites are sulphides
D Malachite and azurite are ores of copper

The correct answer is:
Argentite and cuprite are oxides

Solution:
Cuprite (Cu2O) and Argentite (Ag2S)

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
Which statements is not correct about H3BO3?

Options:
A It is a strong tribasic acid
B It has a layer structure in which planar BO3 units are joined by hydrogen bonds
C It is prepared by acidifying an aqueous solution of borax
D It does not act as proton donor but acts as a Lewis acid by accepting hydroxyl ion

The correct answer is:
It is a strong tribasic acid

Solution:
H3BO3 is orthoboric acid, it is weak monobasic Lewis acid of boron. It has a layer structure in which planar BO3 units are joined by hydrogen bonds.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
Which statement/s is/are incorrect regarding DNA?

I. DNA has a double helix structure.
II. DNA can be double-stranded or single-stranded in animals
III. The two chains have parallel polarity.
IV. The pitch of the helix is 3.4 nm.

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

The correct answer is:
II, III

Solution:
The genetic material DNA is always double stranded in animals and the chains are always anti-parallel.(5'→3'; 3'→5')

Topic: Biology, Molecular Basis of Inheritance, NEET
Which statements of the following is incorrect.

Options:
A Molecularity of a reaction is always a whole number
B Order and molecularity of a reaction need not be same
C Order of a reaction may be zero
D Order of a reaction depends upon the mechanism of the reaction

The correct answer is:
Order of a reaction depends upon the mechanism of the reaction

Solution:
Order of reaction is an experimental value can be whole number or fraction, while molecularity is a theoretical value and always whole number.

Topic: Chemistry, Chemical Kinetics, NEET
Which statements relate correctly for imbibition and osmosis?

Options:
A Water movement is along concentration gradient
B It is an active process
C Water movement is against concentration gradient
D Both B and C

The correct answer is:
Water movement is along concentration gradient

Solution:
Osmosis is the process of movement of a solvent molecule from the region of its high concentration to low concentration through a semi-permeable membrane. Imbibition is a process of absorption that follows the principle of diffusion. The water is absorbed with the direction of the concentration gradient resulting in swelling of the cell.

Topic: Biology, Transport in Plants, NEET
Which step in the overall change of alkali metal reduction has the highest energy requirement?

Options:
A Sublimation of the metal
B Ionization of the metal
C Formation of metal ions in aqueous solution
D Hydration of metal ions

The correct answer is:
Ionization of the metal

Solution:
The ionization of the metal (formation of metal ions) typically requires the highest energy input in the overall process of alkali metal reduction.

Topic: Chemistry, s Block Elements, NEET
Which step is called gateway step/link reaction in aerobic respiration?

Options:
A Glycolysis
B Formation of acetyl coenzyme A
C Citric acid formation
D ETS terminal oxidation

The correct answer is:
Formation of acetyl coenzyme A

Solution:
Link reaction as the name suggests, it links or connects two cycles or reactions. The end product of glycolysis is pyruvic acid. This pyruvate molecule is decarboxylated in the mitochondria and is oxidized and converted to acetyl-coenzyme A. This oxidation or decarboxylation takes place in the presence of enzyme pyruvate dehydrogenase and is known as the link reaction between glycolysis and Krebs cycle.

Topic: Biology, Respiration in Plants, NEET
Which step is chain propagation step in the following mechanism?
(i) Cl2→hvCl⋅+Cl⋅
(ii) Cl⋅+CH4→⋅CH3+HCl
(iii) Cl⋅+Cl⋅→Cl2
(iv) ⋅CH3+⋅Cl→CH3Cl

Options:
A (i)
B (ii)
C (iii)
D (iv)

The correct answer is:
(ii)

Solution:
Photo chlorination of methane occurs in three steps i.e. initiation, propagation and termination.
Chain propagating step is Cl ⋅ + CH 4 → C . H 3 +HCl.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
Which step is important for continuity of glycolysis in anaerobic respiration?

Options:
A Oxidation of PGAL
B Substrate level phosphorylation
C Oxidation of NADH
D Formation of pyruvic acid.

The correct answer is:
Oxidation of NADH

Solution:
NADH is the hydrogen acceptor in glycolysis; thus, oxidation of NADH is necessary to drive the process.

Topic: Biology, Respiration in Plants, NEET
Which step of halogenation directly gives the principal products?

Options:
A Propagation step
B Propagation step
C Initiation step
D Termination step

The correct answer is:
Propagation step

Solution:
Propagation step directly gives the principal products in halogenation reactions involving alkanes.

Topic: Chemistry, Hydrocarbons, NEET
Which step of protein synthesis is performed by the ribosomes?

Options:
A Assemble amino acids in a chain
B Carry a copy of a gene to the cytoplasm
C Contain the code for the synthesis of a protein
D Determine the order of bases in the protein

The correct answer is:
Assemble amino acids in a chain

Solution:
Ribosome holds the mRNA containing the triplet codes for amino acid and arranges the amino acid in a chain during the process of translation where tRNA brings in the specific amino acid based on the codon sequence.

Topic: Biology, Molecular Basis of Inheritance, NEET
Which step of the reaction is the slowest and reversible?

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

The correct answer is:
Step I

Solution:
Step I is the slowest and reversible step in the reaction.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
Which step of translation does not consume a high energy phosphate bond?

Options:
A Translocation
B Amino acid activation
C Peptidyl-transferase reaction
D Aminoacyl tRNA binding to active ribosomal site

The correct answer is:
Translocation

Solution:
The order and sequence of amino acids are defined by the sequence of bases in the mRNA. The amino acids are joined by a bond which is known as a peptide bond. Formation of a peptide bond requires energy. Therefore, in the first phase itself amino acids are activated in the presence of ATP and linked to their cognate tRNAâa process commonly called as charging of tRNA or aminoacylation of tRNA to be more specific. If two such charged tRNAs are brought close enough, the formation of peptide bond between them would be favoured energetically. The presence of a catalyst would enhance the rate of peptide bond formation.

Topic: Biology, Molecular Basis of Inheritance, NEET
Which steroid is used for transformation?

Options:
A Cortisol
B Cholesterol
C Testosterone
D Progesterone

The correct answer is:
Cholesterol

Solution:
Cholesterol forms a major component of animal cell membranes liposomes (artificially created spheres surrounded by a phospholipid bilayer like a membrane) are used for transformation (transgenics).
Related Theory
Steroids include drugs used to relieve swelling and inflammation, such as prednisone and cortisone; vitamin $D$; and some sex hormones, such as testosterone and estradiol.

Topic: Biology, Molecular Basis of Inheritance, NEET, NEET 2002
Which structure of synergid attracts pollen tube towards itself by secreting chemotropic substance?

Options:
A Egg cell
B Filliform apparatus
C Vegetative nucleus
D Antipodals

The correct answer is:
Filliform apparatus

Solution:
Egg apparatus at micropylar end consists of one egg cell and two synergids. Synergid consists of finger like projections at micropylar ends called filli form apparatus, which secretes chemotropic substance to attract pollen tube towards embryo sac. It also absorbs nutrition from nucellus and supply it to embryo sac during its growth.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
Which structures does a cell need for movement?

Options:
A Microfilaments
B Microtubules
C Intermediate filaments
D All of these

The correct answer is:
All of these

Solution:
The cell shape is given by the cytoskeleton and it is made up of microtubules, actin filaments, and intermediate filaments. These structures also help to organize the cell's parts and in addition, they form the basis for cellular movement and cell division.

Topic: Biology, Cell - The Unit of Life, NEET
Which structures perform the function of mitochondria in bacteria?

Options:
A Nucleoid
B Ribosomes
C Cell wall
D Mesosomes

The correct answer is:
Mesosomes

Solution:
The mesosome of bacteria is analogous organ of Mitochondria. Mesosomes are the extension of plasma membrane and functions in cellular respiration, protein synthesis and cargo of the cellular proteins.

Topic: Biology, Cell - The Unit of Life, NEET, NEET 2014
Which subphylum of Phylum Chordata is present only in larval tail?

Options:
A Urochordata
B Cephalochordata
C Vertebrata
D None of the above

The correct answer is:
Urochordata

Solution:
Subphylum Urochordata, also known as Tunicata, has a notochord present only in the larval tail, while in Cephalochordata, it extends from head to tail region and is persistent throughout their life.

Topic: Biology, Animal Kingdom, NEET
Which subshell is formally added with 14 electrons in actinoids?

Options:
A 5f
B 6d
C 7s
D 4p

The correct answer is:
5f

Solution:
The fourteen electrons are formally added to the 5f subshell in actinoids.

Topic: Chemistry, d and f Block Elements, NEET
Which subshell is having less shielding in comparison to another subshell?

Options:
A 4f subshell
B 3d subshell
C 2p subshell
D 1s subshell

The correct answer is:
4f subshell

Solution:
The the shielding of one 4 f electron by another is less than one d electron by another with the increase in nuclear charge along the series.

Topic: Chemistry, d and f Block Elements, NEET
Which subshells have variable occupancy in actinoids?

Options:
A 5f and 6d
B 5s and 5p
C 4f and 6s
D 7s and 7p

The correct answer is:
5f and 6d

Solution:
The actinoids have variable occupancy of the 5f and 6d subshells.

Topic: Chemistry, d and f Block Elements, NEET
Which subshells of the d–orbitals give rise to the transition metals?

Options:
A 2s and 2p
B 3d, 4d, 5d, and 6d
C 1s and 1p
D 4s and 4p

The correct answer is:
3d, 4d, 5d, and 6d

Solution:
The d–orbitals of the penultimate energy level, including 3d, 4d, 5d, and 6d, give rise to the transition metals.

Topic: Chemistry, d and f Block Elements, NEET
Which substance acts as an acid when reacting with water in the Brönsted sense?

Options:
A NH3
B H2S
C NaOH
D HCl

The correct answer is:
H2S

Solution:
When reacting with water in the Brönsted sense, H2S acts as an acid.

Topic: Chemistry, Hydrogen, NEET
Which substance is a precursor in the production of calcium carbide?

Options:
A Quick lime
B Coke
C Limestone
D Ethyne

The correct answer is:
Quick lime

Solution:
Quick lime (CaO) is a precursor in the production of calcium carbide (CaC2). It is obtained by heating limestone, and it is one of the reactants in the synthesis of calcium carbide.

Topic: Chemistry, Hydrocarbons, NEET
Which substance is commonly titrated with K2Cr2O7 to determine its concentration?

Options:
A Sodium chloride (NaCl)
B Hydrochloric acid (HCl)
C Potassium permanganate (KMnO4)
D Iron(II) sulfate (FeSO4)

The correct answer is:
Iron(II) sulfate (FeSO4)

Solution:
Iron(II) sulfate is often titrated with K2Cr2O7to determine its concentration in a solution.

Topic: Chemistry, Redox Reactions, NEET
Which substance is incorrectly matched with its mode of absorption in the gut?

Options:
A Na+ - Active absorption
B Most of the glucose - Active absorption
C Cl- - Simple diffusion
D Most of the amino acids - Facilitated transport

The correct answer is:
Most of the amino acids - Facilitated transport

Solution:
Various mechanisms are involved in the absorption of the nutrients:
A. Simple diffusion: Some amount of monosaccharides such as glucose, some amount of amino acids and few electrolytes such as Cl-.
B. Facilitated transport: Some amount of glucose and some amino acids.
C. Active transport: Monosaccharides such as glucose (most of the absorption), most of the amino acids and electrolytes like Na+. Absorption of water depends on the osmotic gradient.

Topic: Biology, Digestion and Absorption, NEET
Which substance is known to not conduct electricity in its aqueous solution?

Options:
A Sugar
B Sodium chloride
C Acetic acid
D Hydronium ions

The correct answer is:
Sugar

Solution:
The paragraph mentions that the aqueous solution of sugar does not conduct electricity.

Topic: Chemistry, Ionic Equilibrium, NEET
Which substance is mentioned as an example of a maximum boiling azeotrope?

Options:
A Phenol and aniline
B Nitric acid and water
C Chloroform and acetone
D Ethanol and acetone

The correct answer is:
Nitric acid and water

Solution:
The paragraph gives an example of a maximum boiling azeotrope, which is nitric acid and water.

Topic: Chemistry, Solutions, NEET
Which substance is oxidized by K2Cr2O7
to produce a dramatic blue color change?

Options:
A MnO4-
B Fe2+
C C2O42-
D Diphenylamine

The correct answer is:
Diphenylamine

Solution:
Diphenylamine is oxidized by K2Cr2O7

Topic: Chemistry, Redox Reactions, NEET
Which substance is produced when copper sulphide undergoes roasting?

Options:
A Cu2S
B CuO
C CuSO4
D Cu2O

The correct answer is:
Cu2O

Solution:
Roasting of copper sulphide yields copper oxide (Cu2O) along with sulphur dioxide (SO2).

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
Which substance is used as a catalyst in Deacon's process for the manufacture of chlorine?

Options:
A CuSO4
B FeCl3
C CuCl2
D ZnO

The correct answer is:
CuCl2

Solution:
In Deacon's process, CuCl2 is used as a catalyst for the oxidation of hydrogen chloride to produce chlorine.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which substance is used to develop extremely accurate clocks, modern radio and television broadcasting, and mobile radio communications?

Options:
A Aluminum oxide
B Silicon carbide
C Quartz
D Silica gel

The correct answer is:
Quartz

Solution:
Quartz is extensively used as a piezoelectric material; it has made possible to develop extremely accurate clocks, modern radio and television broadcasting and mobile radio communications.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
Which substance is well known for biomagnification?

Options:
A Mercury
B DDT
C Copper
D Lead

The correct answer is:
DDT

Solution:
DDT is a well-known substance that undergoes biomagnification in the aquatic food chain.

Topic: Biology, Environmental Issues, NEET
Which substance oxidizes the indicator diphenylamine to produce an intense blue color in titrations?

Options:
A Mn2+
B Fe3+
C MnO4-
D Cr2O72-

The correct answer is:
Cr2O72-

Solution:
Cr2O72- oxidizes the indicator diphenylamine to produce an intense blue color.

Topic: Chemistry, Redox Reactions, NEET
Which substance would give a solution with a boiling point below that of pure water rather than above ?

Options:
A Sodium chloride (solid)
B Ethyl alcohol (liquid, b.p. 61°C)
C Sulphuric acid (liquid, b.p. > 300°C)
D Sucrose sugar (solid)

The correct answer is:
Ethyl alcohol (liquid, b.p. 61°C)

Solution:
When two liquids are mixed, the boiling point of the mixture lies somewhere between the boiling points of the two pure substances. Since ethyl alcohol has a lower boiling point than water, a mixture of the two would also have a lower boiling point.

Topic: Chemistry, Solutions, NEET
Which substances are involved as reactants in Kolbe electrolysis?

Options:
A Carboxylic acids and water
B Alkali metal salts of carboxylic acids and water
C Alkali metal salts of carboxylic acids and acids
D Alkali metal salts of carboxylic acids and aldehydes

The correct answer is:
Alkali metal salts of carboxylic acids and water

Solution:
The reactants involved in Kolbe electrolysis are alkali metal salts of carboxylic acids (e.g., sodium acetate) and water.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
Which substances attack silica?

Options:
A Oxygen and nitrogen
B Halogens and dihydrogen
C Hydrofluoric acid (HF) and sodium hydroxide (NaOH)
D Quartz and cristobalite

The correct answer is:
Hydrofluoric acid (HF) and sodium hydroxide (NaOH)

Solution:
Silica is attacked by HF and NaOH.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
Which substances conduct electricity in their aqueous solutions?

Options:
A Non-electrolytes
B Strong electrolytes
C Polar substances
D Unionized molecules

The correct answer is:
Strong electrolytes

Solution:
The paragraph mentions that one category of substances that conduct electricity in their aqueous solutions is called strong electrolytes.

Topic: Chemistry, Ionic Equilibrium, NEET
Which substances in the filtrate are reabsorbed actively?

Options:
A nitrogenous wastes
B glucose, amino acids, Na⁺
C H⁺, K⁺ and ammonia
D water

The correct answer is:
glucose, amino acids, Na⁺

Solution:
The tubular epithelial cells in different segments of nephron perform reabsorption of substances like glucose, amino acids, Na⁺, etc, by active mechanisms.

Topic: Biology, Excretory Products and their Elimination, NEET
Which substituent groups represent -R electron displacement effects?

Options:
A COOH, CHO, C=O, CN
B Halogen, OH, OR, NH2
C COOH, CHO, OR, NHCOR
D Halogen, NH2, NHR, NR2

The correct answer is:
COOH, CHO, C=O, CN

Solution:
The paragraph lists COOH, CHO, C=O, CN as substituent groups representing -R electron displacement effects.

Topic: Chemistry, General Organic Chemistry, NEET
Which substituent groups represent +R electron displacement effects?

Options:
A Halogen, OH, COOH, CN
B Halogen, OH, OR, NH2
C COOH, CHO, C=O, NO2
D COOH, CHO, OR, NHCOR

The correct answer is:
Halogen, OH, OR, NH2

Solution:
The paragraph lists halogen, OH, OR, NH2 as substituent groups representing +R electron displacement effects.

Topic: Chemistry, General Organic Chemistry, NEET
Which sugar is present in both DNA and RNA molecules?

Options:
A Alpha-D-ribose
B Beta-D-ribose
C Alpha-D-2-deoxyribose
D Beta-D-2-deoxyribose

The correct answer is:
Beta-D-ribose

Solution:
Beta-D-ribose is present in both DNA and RNA molecules.

Topic: Chemistry, Biomolecules, NEET
Which sugars are the primary products of the reaction of sucrose?

Options:
A Maltose and lactose
B Glucose and fructose
C Sucrose and glucose
D Ribose and deoxyribose

The correct answer is:
Glucose and fructose

Solution:
The reaction of sucrose yields glucose and fructose as primary products.

Topic: Chemistry, Biomolecules, NEET
Which suspect would you charge with the crime?

Options:
A Both suspect 1 & 2
B Only suspect 1
C Neither suspect 1 nor suspect 2
D Only suspect 2

The correct answer is:
Only suspect 2

Solution:
In the given diagram, only suspect 2 sample shows the maximum band similarity with the crime scene sample.

Topic: Biology, Biotechnology - Principles and Processes, NEET
Which symbol is used to represent the oxidation number of the central atom in a complex?

Options:
A R
B X
C O
D Roman numeral

The correct answer is:
Roman numeral

Solution:
The oxidation number of the central atom in a complex is represented by a Roman numeral.

Topic: Chemistry, Coordination Compounds, NEET
Which syndrome results due to loss of an X chromosome in human females?

Options:
A Down’s syndrome
B Turner’s syndrome
C Klinefelter’s syndrome
D Edwards syndrome

The correct answer is:
Turner’s syndrome

Solution:
Turner’s syndrome results due to loss of an X chromosome in human females.

Topic: Biology, Principles of Inheritance and Variation, NEET
Which syndrome results from the gain of an extra copy of chromosome 21?

Options:
A Down’s syndrome
B Turner’s syndrome
C Klinefelter’s syndrome
D Edwards syndrome

The correct answer is:
Down’s syndrome

Solution:
Down’s syndrome results from the gain of an extra copy of chromosome 21.

Topic: Biology, Principles of Inheritance and Variation, NEET
Which synthetic element is described as having a very short half-life?

Options:
A Nitrogen
B Phosphorus
C Arsenic
D Moscovium

The correct answer is:
Moscovium

Solution:
The paragraph highlights that moscovium has a very short half-life.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which system is involved in nerve impluses?

Options:
A The respiratory system of the human body.
B The neural system of the human body.
C The endocrine system of the human body.
D The musculoskeletal system of the human body.

The correct answer is:
The neural system of the human body.

Solution:
In the neural system of the human body, mechanisms of neural coordination like transmission of nerve impulses, impulse conduction across a synapse, and the physiology of reflex action occurs.

Topic: Biology, Neural Control and Coordination, NEET