datavorous/entrance-exam-dataset huggingface dataset:
What factors can alter the rate of a chemical reaction?

Options:
A Concentration, temperature, pressure, and catalyst
B Molecular weight and density of reactants
C Color and odor of the products
D The size of the reaction vessel

The correct answer is:
Concentration, temperature, pressure, and catalyst

Solution:
Factors such as concentration, temperature, pressure, and catalyst can affect the rate of a reaction.

Topic: Chemistry, Chemical Kinetics, NEET
What factors can be exploited to alter the composition of an equilibrium mixture?

Options:
A Temperature and pressure
B Color and appearance
C Chemical formula changes
D The phase of the reactants

The correct answer is:
Temperature and pressure

Solution:
Temperature and pressure can be exploited to alter the composition of an equilibrium mixture.

Topic: Chemistry, Chemical Equilibrium, NEET
What factors contribute to the formation of complex compounds by transition metals?

Options:
A Large sizes of the metal ions and low ionic charges
B Availability of d orbitals for bond formation
C High ionic charges and small sizes of the metal ions
D Bonding with alkali metals

The correct answer is:
Availability of d orbitals for bond formation

Solution:
The transition metals form a large number of complex compounds. This is due to the comparatively smaller sizes of the metal ions, their high ionic charges and the availability of d orbitals for bond formation

Topic: Chemistry, d and f Block Elements, NEET
What factors determine the energy of an electron in a multi-electron atom?

Options:
A Principal quantum number (shell)
B Azimuthal quantum number (subshell)
C Spin quantum number
D Magnetic quantum number

The correct answer is:
Principal quantum number (shell)

Solution:
The energy of an electron in a multi-electron atom depends not only on its principal quantum number (shell) but also on its azimuthal quantum number (subshell).

Topic: Chemistry, Structure of Atom, NEET
What factors determine the enthalpy of solution of an ionic compound?

Options:
A The color of the solute and the solvent.
B The size of the solute particles.
C The lattice enthalpy and the enthalpy of hydration of ions.
D The temperature of the solvent.

The correct answer is:
The lattice enthalpy and the enthalpy of hydration of ions.

Solution:
The enthalpy of solution of an ionic compound is determined by the lattice enthalpy (∆latticeH) and the enthalpy of hydration of ions (∆hydH).

Topic: Chemistry, Thermodynamics (C), NEET
What factors determine the overlap of orbitals when two atoms come close to form a bond?

Options:
A Atomic number and mass
B Sign (phase) and orientation of amplitude of orbital wave function
C Molecular weight and bond strength
D Electron configuration and valence electrons

The correct answer is:
Sign (phase) and orientation of amplitude of orbital wave function

Solution:
The overlap of orbitals depends on the sign (phase) and orientation of the amplitude of orbital wave function.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What factors determine the state of matter?

Options:
A Pressure, temperature, mass, and volume
B Color, density, shape, and texture
C Speed, acceleration, force, and energy
D pH, conductivity, viscosity, and solubility

The correct answer is:
Pressure, temperature, mass, and volume

Solution:
Correct Option is : (A)
Pressure, temperature, mass, and volume

Topic: Chemistry, States of Matter, NEET
What factors does the formation of ionic compounds primarily depend upon?

Options:
A The arrangement of electrons
B The atomic number of the elements
C The ease of formation of positive and negative ions
D The number of valence electrons

The correct answer is:
The ease of formation of positive and negative ions

Solution:
The formation of ionic compounds primarily depends upon the ease of formation of positive and negative ions.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What factors does the solubility of a substance depend upon?

Options:
A Solute and solvent only
B Temperature and pressure only
C Nature of solute, nature of solvent, temperature, and pressure
D Nature of solute and temperature only

The correct answer is:
Nature of solute, nature of solvent, temperature, and pressure

Solution:
The paragraph mentions that the solubility of a substance depends on the nature of the solute, nature of the solvent, temperature, and pressure.

Topic: Chemistry, Solutions, NEET
What factors influence the basicity of aliphatic amines in the aqueous phase?

Options:
A Inductive effect and steric hindrance
B Inductive effect and solvation effect
C Steric hindrance and solvation effect
D Electronegativity and size of alkyl groups

The correct answer is:
Steric hindrance and solvation effect

Solution:
In the aqueous phase, the basicity of aliphatic amines is influenced by both steric hindrance and solvation effects.

Topic: Chemistry, Amines, NEET
What factors influence the extent of dissociation of an acid?

Options:
A Temperature and pressure
B The strength and polarity of the H-A bond
C The color of the acid solution
D The concentration of the acid

The correct answer is:
The strength and polarity of the H-A bond

Solution:
The extent of dissociation of an acid depends on the strength and polarity of the H-A bond, where H represents a hydrogen atom and A is the atom or group to which hydrogen is bonded.

Topic: Chemistry, Ionic Equilibrium, NEET
What factor(s) influence the magnitude of crystal field splitting (Do)?

Options:
A Only the ligand's field strength
B Only the charge on the metal ion
C Both the ligand's field strength and the charge on the metal ion
D Neither the ligand's field strength nor the charge on the metal ion

The correct answer is:
Both the ligand's field strength and the charge on the metal ion

Solution:
The magnitude of crystal field splitting (Do) depends on both the field strength produced by the ligand and the charge on the metal ion.

Topic: Chemistry, Coordination Compounds, NEET
What factors influence the magnitude of the enthalpy change during phase transformations?

Options:
A The strength of intermolecular interactions
B The color of the substance
C The size of the substance
D The shape of the substance

The correct answer is:
The strength of intermolecular interactions

Solution:
The magnitude of the enthalpy change during phase transformations depends on the strength of the intermolecular interactions in the substance undergoing the phase transformation. Substances with stronger intermolecular interactions typically require more heat to change phase.

Topic: Chemistry, Thermodynamics (C), NEET
What factors might influence the choice of a permanent name for a newly discovered element?

Options:
A The element's atomic number.
B The discoverer's preference.
C The country or state in which the element was discovered, or a notable scientist.
D The element's temporary name.

The correct answer is:
The country or state in which the element was discovered, or a notable scientist.

Solution:
The permanent name might reflect the country (or state of the country) in which the element was discovered, or pay tribute to a notable scientist.

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
What feature in the embryonic stage of vertebrates was used to support the idea of evolution?

Options:
A A row of vestigial gill slits
B A tail
C A notochord
D A heart

The correct answer is:
A row of vestigial gill slits

Solution:
Heckel used the observation that the embryos of all vertebrates, including humans, develop a row of vestigial gill slits just behind the head, but it is a functional organ only in fish and not found in any other adult vertebrates as evidence for the evolution of vertebrates.

Topic: Biology, Evolution, NEET
What feature is used in animal classification?

Options:
A Nature of coelom
B Patterns of digestive, circulatory or reproductive systems
C Both A) and B)
D None of the above

The correct answer is:
Both A) and B)

Solution:
The nature of coelom and patterns of digestive, circulatory or reproductive systems are some of the features that are discussed and used as the basis of animal classification.

Topic: Biology, Animal Kingdom, NEET
What features are used to characterize a family among plants?

Options:
A Reproductive features only
B Vegetative features only
C Both vegetative and reproductive features
D Neither vegetative or reproductive features

The correct answer is:
Both vegetative and reproductive features

Solution:
Families are characterized on the basis of both vegetative and reproductive features of plant species.

Topic: Biology, The Living World, NEET
What field of science did Alfred Werner primarily contribute to?

Options:
A Physics
B Chemistry
C Biology
D Mathematics

The correct answer is:
Chemistry

Solution:
Alfred Werner's contributions were primarily in the field of chemistry, particularly in coordination chemistry.

Topic: Chemistry, Coordination Compounds, NEET
What fills the space between the electrodes in a dry cell?

Options:
A Water
B Ammonium chloride (NH4Cl) and zinc chloride (ZnCl2)
C Sodium hydroxide (NaOH)
D Sulfuric acid (H2SO4)

The correct answer is:
Ammonium chloride (NH4Cl) and zinc chloride (ZnCl2)

Solution:
The space between the electrodes in a dry cell is filled by a moist paste of ammonium chloride (NH4Cl) and zinc chloride (ZnCl2).

Topic: Chemistry, Electrochemistry, NEET
What final product will form when alcoholic KOH is treated with 1, 1-dibromoethane?

Options:
A Ethene
B Ethane-1, 2-diol
C Acetaldehyde
D Ethyne

The correct answer is:
Ethyne

Solution:

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What floral reward does Amorphophallus particularly provide to its pollinator?

Options:
A Floral oils
B Pollen grains
C Nectar
D Safe place to lay eggs

The correct answer is:
Safe place to lay eggs

Solution:
Amorphophallus (amorpho - misshapen, phallus - penis) is named so because of the prominent spadix. It has the tallest flowers, about 6 feet tall. They provide a site for laying eggs for the insects that pollinate it.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
What force caused the deflection of positively charged α-particles in Rutherford's experiment?

Options:
A Gravitational force
B Electromagnetic force
C Repulsive force from the nucleus
D Attractive force from the electrons

The correct answer is:
Repulsive force from the nucleus

Solution:
The deflection of positively charged α-particles was caused by the repulsive force from the positively charged nucleus.

Topic: Chemistry, Structure of Atom, NEET
What forces air from outside to move into the lungs?

Options:
A Decrease in intra-pulmonary pressure
B Increase in intra-pulmonary pressure
C Increase in atmospheric pressure
D Decrease in atmospheric pressure

The correct answer is:
Decrease in intra-pulmonary pressure

Solution:
The decrease in intra-pulmonary pressure to less than atmospheric pressure forces air from outside to move into the lungs, i.e., inspiration.

Topic: Biology, Breathing and Exchange of Gases, NEET
What forces bind cations and anions in ionic solids?

Options:
A Covalent forces
B Metallic forces
C Electrostatic (coulombic) forces
D Dipole-dipole forces

The correct answer is:
Electrostatic (coulombic) forces

Solution:
Cations and anions in ionic solids are bound by strong electrostatic (coulombic) forces, as stated in the paragraph.

Topic: Chemistry, Solid State, NEET
What forces come into play as two hydrogen atoms approach each other?

Options:
A Magnetic forces
B Gravitational forces
C Attractive and repulsive forces
D Electromagnetic forces

The correct answer is:
Attractive and repulsive forces

Solution:
As the two hydrogen atoms approach each other, new attractive and repulsive forces begin to operate.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What form does sulphur take when absorbed by plants from the soil?

Options:
A Sulphate (SO₄ ²⁻)
B Sulphuric acid (H₂SO₄)
C Elemental sulphur (S)
D Sulphide (S²⁻)

The correct answer is:
Sulphate (SO₄ ²⁻)

Solution:
Plants obtain sulphur from the soil in the form of sulphate (SO₄ ²⁻).

Topic: Biology, Mineral Nutrition, NEET
What formed after the Big Bang explosion?

Options:
A Hydrogen and Helium
B Oxygen and Nitrogen
C Gold and Silver
D Carbon and Water

The correct answer is:
Hydrogen and Helium

Solution:
Hydrogen and helium formed sometime later after the Big Bang explosion, as the universe expanded and the temperature came down.

Topic: Biology, Evolution, NEET
What forms the backbone of a polynucleotide chain?

Options:
A Nitrogenous bases
B Sugar moiety
C Phosphates
D Sugar and phosphates

The correct answer is:
Sugar and phosphates

Solution:
The backbone of a polynucleotide chain is formed due to sugar and phosphates, while the nitrogenous bases linked to the sugar moiety project from the backbone.

Topic: Biology, Molecular Basis of Inheritance, NEET
What forms the M–C p bond in metal carbonyls?

Options:
A The donation of a pair of electrons from a filled d orbital of metal into the vacant antibonding p* orbital of carbon monoxide
B The donation of a pair of electrons from the metal into the vacant antibonding p* orbital of carbon monoxide
C The donation of a pair of electrons from the metal into the vacant p orbital of carbon monoxide
D The donation of a pair of electrons from a filled p orbital of metal into the vacant orbital of the carbon

The correct answer is:
The donation of a pair of electrons from a filled d orbital of metal into the vacant antibonding p* orbital of carbon monoxide

Solution:
The M–C p bond is formed by the donation of a pair of electrons from a filled d orbital of metal into the vacant antibonding p* orbital of carbon monoxide.

Topic: Chemistry, Coordination Compounds, NEET
What fraction of an indicator (Hln) is in basic form at a pH of 6 if the pKa of the indicator is 5 ?

Options:
A 12
B 111
C 1011
D 110

The correct answer is:
1011

Solution:
pH=pKa+log(In-)(HIn)
6=5+log(In-)(HIn)
(In-)(HIn)=10
(In-)(In-)+(HIn)=1011

Topic: Chemistry, Ionic Equilibrium, NEET
What fraction of $\mathrm{Fe}$ exists as $\mathrm{Fe}$ (III) in $\mathrm{Fe}_{0.96} \mathrm{O}$ ?
(Consider $\mathrm{Fe}_{0.96}$ to be made up of $\mathrm{Fe}$ (II) and $\mathrm{Fe}$ (III) only)

Options:
A $\frac{1}{12}$
B 0.08
C $\frac{1}{16}$
D $\frac{1}{20}$

The correct answer is:
$\frac{1}{12}$

Solution:
Let's assume $\mathrm{Fe}$ in $\mathrm{Fe}^{2+}=\mathrm{x}$
Let's assume $\mathrm{Fe}$ in $\mathrm{Fe}^{3+}(0.96-x)$
Using the charge conservation formula for
$\mathrm{Fe}_{0.96} \mathrm{O}_{1.00}$
We get: $(x)(+2)+(0.96-x)(+3)-2=0$
$\begin{aligned}
& =2 x+2.88-3 x-2=0 \\
& x=0.88
\end{aligned}$
So, number of ions of $\mathrm{Fe}^{3+}=0.96-x=0.96-0.88=0.08$
$\text {Fraction of } \mathrm{Fe}^{3+} \text { ion } =\frac{0.08}{0.96} =\frac{1}{12}$

Topic: Chemistry, Solid State, NEET, NEET 2022 (Phase 2)
What fraction of one edge centred octahedral void lies in one unit cell of fcc?

Options:
A 112
B 12
C 13
D 14

The correct answer is:
14

Solution:
In a face-centered cubic (fcc) lattice, there are four atoms per unit cell. The octahedral voids in an fcc lattice are located at the center of the unit cell and at the center of each edge.

The total number of octahedral voids in FCC unit cell are four.

Octahedral voids in FCC = Edge centres + Body centre.

The contribution of edge centre = 14

∴ Fraction of one edge centred octahedral void in one unit cell of FCC = 14

Topic: Chemistry, Solid State, NEET, NEET 2023 (All India)
What fraction of tetrahedral voids is occupied in a given compound?

Options:
A One-fourth
B One-third
C Half
D Three-fourths

The correct answer is:
One-third

Solution:
In a given compound, one-third of the tetrahedral voids are occupied.

Topic: Chemistry, Solid State, NEET
What fraction of the mass of one carbon-12 (12
C) atom is defined as one atomic mass unit (amu) in the present system?

Options:
A One-tenth
B One-twelfth
C One-half
D One-quarter

The correct answer is:
One-twelfth

Solution:
One atomic mass unit (amu) exactly equal to one-twelfth of the mass of one carbon-12 (12

Topic: Chemistry, Some Basic Concepts of Chemistry, NEET
What fraction of the power consumed in the room, which has an air conditioner running for 5 hours a day at 220V, is dissipated as joule heating in the copper wiring of 1 mm radius and 10 m length?[ρcu= 1.7 × 10–8Ωm]

Options:
A 0.1%
B 0.2%
C 0.5%
D 1.0%

The correct answer is:
0.2%

Solution:
Correct Option is : (B)
0.2%

Topic: Chemistry, Current Electricity, NEET
What functional group characterises acyl halides?

Options:
A Carbonyl group
B Hydroxyl group (-OH)
C Halogen group (-X)
D Amino group (-NH2)

The correct answer is:
Halogen group (-X)

Solution:
Acyl halides are characterised by the presence of halogen groups (-X), which can be fluorine (F), chlorine (Cl), bromine (Br), or iodine (I).

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What functional group characterises acyl halides?

Options:
A Carbonyl group
B Hydroxyl group (-OH)
C Amine group (-NH2)
D Halogen group

The correct answer is:
Halogen group

Solution:
Acyl halides are characterized by the presence of halogen groups (-X) attached to the carbon of the carbonyl group.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What functional group characterises carboxylic acids?

Options:
A Carbonyl group
B Hydroxyl group (-OH)
C Amine group (-NH2)
D Halogen group

The correct answer is:
Hydroxyl group (-OH)

Solution:
Carboxylic acids are characterised by the presence of a hydroxyl group (-OH) attached to the carbon of the carbonyl group.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What functional group characterizes carboxylic acids?

Options:
A Carbonyl group
B Hydroxyl group
C Alkyl group
D Aryl group

The correct answer is:
Hydroxyl group

Solution:
Carboxylic acids are characterized by the presence of a carboxyl functional group, which consists of a carbonyl group attached to a hydroxyl group.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What functional group is confirmed to be present in glucose through its reaction with hydroxylamine?

Options:
A Alkene
B Carbonyl (>C=O)
C Alcohol
D Ester

The correct answer is:
Carbonyl (>C=O)

Solution:
The reaction of glucose with hydroxylamine confirms the presence of a carbonyl group (>C=O) in glucose.

Topic: Chemistry, Biomolecules, NEET
What functional group is indicated to be present in glucose based on its conversion to saccharic acid upon oxidation?

Options:
A Aldehyde group
B Ketone group
C Primary alcohol group
D Carboxylic acid group

The correct answer is:
Primary alcohol group

Solution:
The presence of a primary alcohol (-OH) group in glucose, as it forms saccharic acid upon oxidation.

Topic: Chemistry, Biomolecules, NEET
What functional group is present in synthetic cation exchange resins used for water softening?

Options:
A -SO3H group
B -COOH group
C -NH2 group
D -OH group

The correct answer is:
-SO3H group

Solution:
Synthetic cation exchange resins used for water softening contain the -SO3H group as their functional group.

Topic: Chemistry, Hydrogen, NEET
What functional groups can be detected using the haloform reaction with sodium iodide?

Options:
A Aldehydes
B Ketones
C Carboxylic acids
D Hydroxyl groups

The correct answer is:
Ketones

Solution:
The haloform reaction with sodium iodide can be used to detect ketones.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What gas is liberated when aluminum reacts with dilute HCl?

Options:
A Oxygen
B Chlorine
C Hydrogen
D Nitrogen

The correct answer is:
Hydrogen

Solution:
The reaction equation: 2Al(s) + 6HCl (aq) → 2Al3+ (aq) + 6Cl– (aq) + 3H2 (g), indicates the liberation of dihydrogen (H2).

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
What gas is produced when sulphuric acid reduces to SO2 by the reaction with copper (Cu)?

Options:
A SO3
B O2
C H2O
D CO2

The correct answer is:
SO3

Solution:
When sulphuric acid reduces to SO2 by the reaction with copper (Cu), SO3 gas is produced.**

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What gas is released in large amounts from paddy fields, coal mines, and rotting garbage dumps?

Options:
A Carbon dioxide
B Methane
C Nitrous oxide
D Oxygen

The correct answer is:
Methane

Solution:
Methane is released in large amounts from paddy fields, coal mines, and rotting garbage dumps.

Topic: Chemistry, Environmental Chemistry, NEET
What gases are produced as byproducts when thionyl chloride reacts with alcohols to form alkyl halides?

Options:
A CO2 and H2O
B SO2 and HCl
C NH3 and H2S
D CH4 and O2

The correct answer is:
SO2 and HCl

Solution:
Thionyl chloride reacts with alcohols to produce SO2 and HCl as byproducts.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What gases are produced during the digestion of the sludge in anaerobic sludge digesters?

Options:
A Hydrogen sulphide and carbon dioxide
B Methane and carbon dioxide
C Methane and hydrogen sulphide
D Carbon dioxide and nitrogen

The correct answer is:
Methane and hydrogen sulphide

Solution:
During the digestion process, bacteria produce a mixture of gases such as methane, hydrogen sulphide and carbon dioxide.

Topic: Biology, Microbes in Human Welfare, NEET
What gases are produced in anaerobic sludge digesters?

Options:
A Methane and CO2
B Methane, hydrogen sulphide and CO2
C Methane, hydrogen sulphide and CO.
D Hydrogen sulphide and CO2

The correct answer is:
Methane, hydrogen sulphide and CO2

Solution:
Biogas is a mixture of gases (containing predominantly methane) produced by microbial activity and which may be used as fuel. The major component of biogas is methane (50-70%) which is highly inflammable other gases are carbon dioxide (30-40%) and a mixture of other gases H2, H2S etc. (10%).

Topic: Biology, Microbes in Human Welfare, NEET, NEET 2014
What gases are produced in anaerobic sludge digesters?

Options:
A Hydrogen sulphide and CO2
B Methane and CO2 only
C Methane, Hydrogen sulphide and CO2
D Methane, Hydrogen sulphide and O2

The correct answer is:
Methane, Hydrogen sulphide and CO2

Solution:
During the waste water treatment process the sludge formed in the aeration tanks is partially transferred to sludge digestors. In this tank anaerobic process occurs where the anaerobic microbes breakdown the sludge content in a series of steps. The end process produces a mixture of gases having methane, hydrogen sulphide and carbon dioxide.

Topic: Biology, Microbes in Human Welfare, NEET
What gases do microbes release during metabolism?

Options:
A Oxygen
B Sulphur
C Methane
D Nitrogen

The correct answer is:
Methane

Solution:
Methano bacterium observed in anaerobic sludge releases large amounts of methane along with hydrogen gas and carbon dioxide.

Topic: Biology, Microbes in Human Welfare, NEET
What geometric shape are the voids (empty spaces) in the two-dimensional hexagonal close packing?

Options:
A Circle
B Triangle
C Square
D Hexagon

The correct answer is:
Triangle

Solution:
The voids (empty spaces) in the two-dimensional hexagonal close packing are triangular in shape, as stated in the paragraph.

Topic: Chemistry, Solid State, NEET
What gets removed during the processing of "proinsulin" to "insulin"?

Options:
A A peptide is removed from proinsulin
B C peptide is removed from proinsulin
C A and B peptides are removed from proinsulin
D B peptide is removed from proinsulin

The correct answer is:
C peptide is removed from proinsulin

Solution:
In mammals, including humans, insulin is synthesised as a pro-hormone (like a pro-enzyme, the pro-hormone also needs to be processed before it becomes a fully mature and functional hormone) which contains an extra stretch called the C peptide. This C peptide is not present in the mature insulin and is removed during maturation into active insulin.

Topic: Biology, Biotechnology and Its Applications, NEET
What gives red blood cells their red color?

Options:
A Fibrinogen
B Serum
C Haemoglobin
D Plasma

The correct answer is:
Haemoglobin

Solution:
Red blood cells contain a red-colored, iron-containing complex protein called haemoglobin which gives red blood cells their red color.

Topic: Biology, Body Fluids and Circulation, NEET