datavorous/entrance-exam-dataset huggingface dataset:
What does the oxide layer on the surface of aluminum do?

Options:
A Enhances its reactivity
B Protects it from further attack
C Increases its electrical conductivity
D Forms a metallic oxide

The correct answer is:
Protects it from further attack

Solution:
Aluminium forms a very thin oxide layer on the surface which protects the metal from further attack.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
What does the Oxygen dissociation curve represent?

Options:
A The relationship between the saturation of haemoglobin with CO₂ and pCO₂
B The relationship between the saturation of haemoglobin with O₂ and pO₂
C The relationship between the saturation of haemoglobin with H⁺ concentration and pO₂
D The relationship between the saturation of haemoglobin with temperature and pO₂

The correct answer is:
The relationship between the saturation of haemoglobin with O₂ and pO₂

Solution:
The Oxygen dissociation curve represents the relationship between the saturation of haemoglobin with O₂ and the partial pressure of O₂ (pO₂).

Topic: Biology, Breathing and Exchange of Gases, NEET
What does the paragraph state as the key factor affecting the extent of ionization?

Options:
A Temperature of the solution
B Pressure applied to the solution
C Strength of the bond and extent of solvation
D Color of the solution

The correct answer is:
Strength of the bond and extent of solvation

Solution:
The paragraph mentions that the extent of ionization depends on the strength of the bond and the extent of solvation of ions produced.

Topic: Chemistry, Ionic Equilibrium, NEET
What does the peak of the curve in the kinetic energy distribution represent?

Options:
A The minimum kinetic energy
B The maximum kinetic energy
C The average kinetic energy
D The total kinetic energy

The correct answer is:
The maximum kinetic energy

Solution:
The peak of the curve corresponds to the most probable kinetic energy, which is the kinetic energy of the maximum fraction of molecules.

Topic: Chemistry, Chemical Kinetics, NEET
What does the period number in the Periodic Table correspond to?

Options:
A Atomic mass
B Atomic number
C Valence electrons
D Principal quantum number (n)

The correct answer is:
Principal quantum number (n)

Solution:
The period number corresponds to the highest principal quantum number (n) of the elements in the period.

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
What does the Periodic Law state?

Options:
A The properties of elements are random.
B The properties of elements depend on their atomic numbers.
C The properties of elements are a periodic function of their atomic weights.
D The properties of elements do not change.

The correct answer is:
The properties of elements are a periodic function of their atomic weights.

Solution:
The Periodic Law states that the properties of elements are a periodic function of their atomic weights.

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
What does the pituitary gland produce?

Options:
A Melatonin
B Trophic hormones
C Parathyroid hormone
D Thymosins

The correct answer is:
Trophic hormones

Solution:
Pars distalis of the pituitary gland produces six trophic hormones. Pars intermedia secretes only one hormone, while pars nervosa (neurohypophysis) secretes two hormones.

Topic: Biology, Chemical Coordination and Integration, NEET
What does the placenta facilitate between the developing embryo and the maternal body?

Options:
A Transport of nutrients to the embryo
B Supply of oxygen to the maternal body
C Supply of oxygen and nutrients to the embryo and removal of waste materials
D Secretion of hormones by the ovary

The correct answer is:
Supply of oxygen and nutrients to the embryo and removal of waste materials

Solution:
The placenta acts as a structural and functional unit between the developing embryo and the maternal body and facilitates the supply of oxygen and nutrients to the embryo and also the removal of carbon dioxide and excretory/waste materials produced by the embryo.

Topic: Biology, Human Reproduction, NEET
What does the presence of a carbonyl group (>C=O) indicate in a molecule?

Options:
A The molecule is an alkane.
B The molecule is an alcohol.
C The molecule is an aldehyde or ketone.
D The molecule is an aromatic compound.

The correct answer is:
The molecule is an aldehyde or ketone.

Solution:
Carbonyl groups (>C=O) are typically found in aldehydes and ketones.

Topic: Chemistry, Biomolecules, NEET
What does the presence of ozone in the stratosphere primarily protect against?

Options:
A Acid rain
B Greenhouse effect
C Ultraviolet (UV) radiation
D Smog

The correct answer is:
Ultraviolet (UV) radiation

Solution:
Ozone in the stratosphere prevents about 99.5% of the sun’s harmful ultraviolet (UV) radiations from reaching the earth’s surface, protecting humans and other animals from its effects.

Topic: Chemistry, Environmental Chemistry, NEET
What does the products of ozonolysis of 1,2-dimethylbenzene (o-xylene) say about Kekulé structure for benzene?

Options:
A All the three products cannot be obtained by any one of the Kekulé’s structures. This shows that benzene is a resonance hybrid of the two resonating structures.
B The products of ozonolysis of o-xylene support the Kekulé structure for benzene, as they indicate the presence of alternating single and double bonds in the benzene ring.
C The products of ozonolysis of o-xylene provide inconclusive evidence regarding the Kekulé structure for benzene.
D The Kekulé structure for benzene has been discredited, and modern theories provide a more accurate description of its electronic structure.

The correct answer is:
All the three products cannot be obtained by any one of the Kekulé’s structures. This shows that benzene is a resonance hybrid of the two resonating structures.

Solution:
Correct Option is : (A)
All the three products cannot be obtained by any one of the Kekulé’s structures. This shows that benzene is a resonance hybrid of the two resonating structures.

Topic: Chemistry, Hydrocarbons, NEET
What does the proportional constant (η) measure in terms of fluid properties?

Options:
A Temperature
B Force
C Density
D Viscosity

The correct answer is:
Viscosity

Solution:
The proportional constant (η) measures the viscosity of a fluid.

Topic: Chemistry, States of Matter, NEET
What does the P-wave represent in an ECG?

Options:
A The depolarisation of the atria
B The repolarisation of the atria
C The depolarisation of the ventricles
D The repolarisation of the ventricles

The correct answer is:
The depolarisation of the atria

Solution:
The P-wave represents the electrical excitation (or depolarisation) of the atria, which leads to the contraction of both the atria.

Topic: Biology, Body Fluids and Circulation, NEET
What does the QRS complex represent in an ECG?

Options:
A The depolarisation of the atria
B The repolarisation of the atria
C The depolarisation of the ventricles
D The repolarisation of the ventricles

The correct answer is:
The depolarisation of the ventricles

Solution:
The QRS complex represents the depolarisation of the ventricles, which initiates the ventricular contraction.

Topic: Biology, Body Fluids and Circulation, NEET
What does the quantum number "l" represent for an atomic orbital?

Options:
A Size of the orbital
B Shape of the orbital
C Orientation of the orbital
D Principal quantum number

The correct answer is:
Shape of the orbital

Solution:
The quantum number "l" represents the shape of an atomic orbital. It determines the orbital angular momentum and, consequently, its shape. Different values of "l" correspond to different orbital shapes.

Topic: Chemistry, Structure of Atom, NEET
What does the quantum number 'ms' refer to?

Options:
A Shell designation
B Subshell orientation
C Orbital orientation
D Spin orientation of the electron

The correct answer is:
Spin orientation of the electron

Solution:
The quantum number 'ms' refers to the orientation of the spin of the electron.

Topic: Chemistry, Structure of Atom, NEET
What does the rate equation "Rate = k [NO]2 [O2]" tell us about the reaction order with respect to NO and O2?

Options:
A The reaction is first order with respect to both NO and O2.
B The reaction is second order with respect to NO and first order with respect to O2.
C The reaction is second order with respect to O2 and first order with respect to NO.
D The reaction order cannot be determined from the equation.

The correct answer is:
The reaction is second order with respect to NO and first order with respect to O2.

Solution:
The rate equation "Rate = k [NO]2 [O2]" indicates that the reaction is second order with respect to NO and first order with respect to O2.

Topic: Chemistry, Chemical Kinetics, NEET
What does the rate law describe in a chemical reaction?

Options:
A The speed of the reaction
B The rate of reactant consumption
C The rate of product formation
D The relationship between reactant concentration and reaction rate

The correct answer is:
The relationship between reactant concentration and reaction rate

Solution:
The rate law describes the relationship between the concentration of reactants and the rate of the reaction.

Topic: Chemistry, Chemical Kinetics, NEET
What does the rate of reaction depend on when the stoichiometric coefficients of the reactants and products are the same?

Options:
A The temperature of the reaction
B The nature of the reactants
C The concentration of the reactants
D The rate of disappearance of any reactant or appearance of any product

The correct answer is:
The rate of disappearance of any reactant or appearance of any product

Solution:
When the stoichiometric coefficients of the reactants and products are the same, the rate of reaction depends on the rate of disappearance of any reactant or appearance of any product.

Topic: Chemistry, Chemical Kinetics, NEET
What does the ratio of [Conjugate acid, BH+] to [Base, B] in the Henderson-Hasselbalch equation represent?

Options:
A The concentration of water in the solution
B The pKa value of the acid
C The pH of the solution
D The molar mass of the base

The correct answer is:
The pH of the solution

Solution:
The ratio of [Conjugate acid, BH+] to [Base, B] in the Henderson-Hasselbalch equation represents the pH of the solution.

Topic: Chemistry, Ionic Equilibrium, NEET
What does the reaction coordinate represent?

Options:
A The time it takes for the reaction to occur
B The concentration of reactants
C The profile of energy change during the reaction
D The rate constant of the reaction

The correct answer is:
The profile of energy change during the reaction

Solution:
The reaction coordinate represents the profile of energy change that occurs as the reactants transform into products during the reaction.

Topic: Chemistry, Chemical Kinetics, NEET
What does the redox reaction 2Cr2+(aq) + 2H+(aq) → 2Cr3+(aq) + H2(g) represent?

Options:
A Oxidation of chromium
B Reduction of chromium
C Oxidation of hydrogen
D Reduction of hydrogen

The correct answer is:
Reduction of chromium

Solution:
The given redox reaction represents the reduction of chromium.

Topic: Chemistry, d and f Block Elements, NEET
What does the relationship ∆rH = Σ(∆H(bonds broken)) - Σ(∆H(bonds formed)) represent?

Options:
A It calculates the mean bond enthalpies of reactants and products.
B It determines the electrical conductivity of a substance.
C It predicts the enthalpy change of a reaction based on bond enthalpies.
D It measures the temperature change during a chemical reaction.

The correct answer is:
It predicts the enthalpy change of a reaction based on bond enthalpies.

Solution:
The relationship ∆rH = Σ(∆H(bonds broken)) - Σ(∆H(bonds formed)) is used to predict the enthalpy change of a reaction based on bond enthalpies.

Topic: Chemistry, Thermodynamics (C), NEET
What does the resonance stabilisation energy represent?

Options:
A The energy required to break a molecule's bonds
B The difference in energy between the actual structure and the lowest energy resonance structure
C The energy of a molecule's highest energy resonance structure
D The energy of the molecule's contributing structures

The correct answer is:
The difference in energy between the actual structure and the lowest energy resonance structure

Solution:
The resonance stabilisation energy represents the difference in energy between the actual structure and the lowest energy resonance structure.

Topic: Chemistry, General Organic Chemistry, NEET
What does the Rosenmund reduction primarily involve?

Options:
A Acid-base neutralisation
B Hydrogenation of a functional group
C Oxidation of a compound
D Esterification

The correct answer is:
Hydrogenation of a functional group

Solution:
The Rosenmund reduction primarily involves the hydrogenation of the acyl chloride functional group.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What does the second law of thermodynamics state about the natural direction of a spontaneous change in an isolated system?

Options:
A Increase in energy is the natural direction.
B Increase in temperature is the natural direction.
C Increase in entropy is the natural direction.
D Increase in pressure is the natural direction.

The correct answer is:
Increase in entropy is the natural direction.

Solution:
The second law of thermodynamics states that the natural direction of a spontaneous change in an isolated system is an increase in entropy.

Topic: Chemistry, Thermodynamics (C), NEET
What does the seminal plasma along with the sperms constitute?

Options:
A The testicular hormones
B The semen
C The accessory ducts
D The ovum

The correct answer is:
The semen

Solution:
The seminal plasma along with the sperms constitutes the semen.

Topic: Biology, Human Reproduction, NEET
What does the shape of an age pyramid reflect about a population?

Options:
A Whether it is growing
B Whether it is stable
C Whether it is declining
D All of the above

The correct answer is:
All of the above

Solution:
The shape of an age pyramid reflects the growth status of a population, whether it is growing, stable or declining.

Topic: Biology, Organisms and Populations, NEET
What does the shape of the age pyramid reflect about the population?

Options:
A Whether the population is growing, stable or declining
B The size of the population
C The sex ratio of the population
D None of the above

The correct answer is:
Whether the population is growing, stable or declining

Solution:
The shape of the age pyramid reflects the growth status of the population, whether it is growing, stable, or declining.

Topic: Biology, Organisms and Populations, NEET
What does the shape of the curve of isotherms of carbon dioxide at high temperatures look like?

Options:
A It resembles that of an ideal gas.
B It is a straight line.
C It is a horizontal line.
D It is a vertical line.

The correct answer is:
It resembles that of an ideal gas.

Solution:
At high temperatures, the shape of the curve of isotherms of carbon dioxide resembles that of an ideal gas.

Topic: Chemistry, States of Matter, NEET
What does the slope of the straight line in the logarithmic plot (log x/m vs log p) represent in the Freundlich isotherm?

Options:
A The value of k
B The value of n
C The value of 1/n
D The intercept on the y-axis

The correct answer is:
The value of 1/n

Solution:
The paragraph mentions that the slope of the straight line in the logarithmic plot gives the value of 1/n in the Freundlich isotherm.

Topic: Chemistry, Surface Chemistry, NEET
What does the solution of the Schrödinger equation for the hydrogen atom provide?

Options:
A The atomic mass of the hydrogen atom
B The electron's velocity in the atom
C Possible energy levels and corresponding wave functions of the electron
D The total energy of the hydrogen atom

The correct answer is:
Possible energy levels and corresponding wave functions of the electron

Solution:
The solution of the Schrödinger equation for the hydrogen atom provides possible energy levels and corresponding wave functions of the electron.

Topic: Chemistry, Structure of Atom, NEET
What does the solution of the Schrödinger equation provide?

Options:
A The total energy of the system
B The kinetic energy of electrons
C The attractive potential between electrons and nuclei
D Both E (energy) and ψ (wavefunction)

The correct answer is:
Both E (energy) and ψ (wavefunction)

Solution:
The solution of the Schrödinger equation provides both E (energy) and ψ (wavefunction).

Topic: Chemistry, Structure of Atom, NEET
What does the solvent used in paper chromatography rise up due to in the paper strip?

Options:
A Capillary action
B Boiling point
C Gravity
D Magnetic force

The correct answer is:
Capillary action

Solution:
The solvent used in paper chromatography rises up the paper strip due to capillary action.

Topic: Chemistry, General Organic Chemistry, NEET
What does the spectral distribution of radiation from a black body depend on?

Options:
A Its material
B Its shape
C Its temperature
D Its size

The correct answer is:
Its temperature

Solution:
The spectral distribution of radiation from a black body depends only on its temperature.

Topic: Chemistry, Structure of Atom, NEET
What does the speed of Brownian movement depend on, according to the paragraph?

Options:
A Nature of the colloid
B Size of the particles and viscosity of the solution
C Temperature of the solution
D Concentration of the colloid

The correct answer is:
Size of the particles and viscosity of the solution

Solution:
The paragraph mentions that the speed of Brownian movement depends on the size of the particles and viscosity of the solution.

Topic: Chemistry, Surface Chemistry, NEET
What does the speed-time graph of a ball dropped from a height of 90 meters on a floor look like between t = 0 to 12 seconds, considering that at each collision with the floor, the ball loses one-tenth of its speed?

Options:
A A straight line with a negative slope.
B A straight line with a positive slope.
C A curve with a negative slope.
D A curve with a positive slope.

The correct answer is:
A straight line with a negative slope.

Solution:
Correct Option is : (A)
A straight line with a negative slope.

Topic: Chemistry, Motion In One Dimension, NEET
What does the 'spin-only' formula µ= √n(n+2) represent?

Options:
A The magnetic moment of paramagnetic substances
B The magnetic moment of diamagnetic substances
C The magnetic moment of ferromagnetic substances
D The magnetic moment of non-magnetic substances

The correct answer is:
The magnetic moment of paramagnetic substances

Solution:
µ= √n(n+2) is the 'spin-only' formula used to calculate the magnetic moment of paramagnetic substances.

Topic: Chemistry, d and f Block Elements, NEET
What does the sporophyte of a bryophyte derive its nourishment from?

Options:
A The soil
B The water
C The photosynthetic gametophyte
D The substrate

The correct answer is:
The photosynthetic gametophyte

Solution:
The sporophyte is not free-living but attached to the photosynthetic gametophyte and derives nourishment from it.

Topic: Biology, Plant Kingdom, NEET
What does the spot where oxidation takes place in an iron object behave as during corrosion?

Options:
A Anode.
B Cathode.
C Electrolyte.
D Insulator.

The correct answer is:
Anode.

Solution:
oxidation takes place and that spot behaves as anode.

Topic: Chemistry, Electrochemistry, NEET
What does the starting point of a curved arrow in the notation represent?

Options:
A The final product of the reaction
B The point from where an electron pair is shifted
C The location of the nucleophile
D The temperature of the reaction

The correct answer is:
The point from where an electron pair is shifted

Solution:
The starting point of a curved arrow in notation represents the point from where an electron pair is shifted during the reaction.

Topic: Chemistry, General Organic Chemistry, NEET
What does the statement about the existence of purely ionic or covalent bonds implicate?

Options:
A Purely ionic or covalent bonds are common in nature.
B Purely ionic or covalent bonds represent an ideal situation.
C Purely ionic or covalent bonds cannot exist in reality.
D Purely ionic or covalent bonds are found in most compounds.

The correct answer is:
Purely ionic or covalent bonds represent an ideal situation.

Solution:
The purely ionic or covalent bonds represent an ideal situation.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What does the statement "colloid is not a substance but a state of substance" mean?

Options:
A It means that a colloid is a distinct chemical compound.
B It means that a colloid can only exist as a liquid state.
C It means that colloids are a specific category of substances, separate from solids, liquids, and gases.
D It means that a colloid is a dispersed phase in a continuous medium and represents a particular state of matter.

The correct answer is:
It means that a colloid is a dispersed phase in a continuous medium and represents a particular state of matter.

Solution:
Correct Option is : (D)
It means that a colloid is a dispersed phase in a continuous medium and represents a particular state of matter.

Topic: Chemistry, Surface Chemistry, NEET
What does the statement "like dissolves like" mean in the context of solubility?

Options:
A Solids dissolve in liquids of the same color.
B Polar solutes dissolve in polar solvents, and non-polar solutes in non-polar solvents.
C Solids dissolve in liquids that have the same temperature.
D Solids dissolve in liquids that have similar molecular weights.

The correct answer is:
Polar solutes dissolve in polar solvents, and non-polar solutes in non-polar solvents.

Solution:
The paragraph explains that "like dissolves like," which means that polar solutes dissolve in polar solvents, and non-polar solutes dissolve in non-polar solvents.

Topic: Chemistry, Solutions, NEET
What does the stoichiometric coefficient for a substance indicate?

Options:
A The phase of the substance
B The color of the substance
C The number of atoms in the molecule
D The number of molecules (and moles) in the reaction

The correct answer is:
The number of molecules (and moles) in the reaction

Solution:
The stoichiometric coefficient for a substance in a chemical equation indicates the number of molecules (and moles) of that substance involved in the reaction.

Topic: Chemistry, Some Basic Concepts of Chemistry, NEET
What does the stoichiometric coefficient of a chemical species in a balanced chemical equation represent?

Options:
A The speed at which the species reacts
B The concentration of the species at the beginning of the reaction
C The number of moles of the species involved in the reaction
D The temperature at which the reaction occurs

The correct answer is:
The number of moles of the species involved in the reaction

Solution:
The stoichiometric coefficient of a chemical species in a balanced chemical equation represents the number of moles of the species involved in the reaction.

Topic: Chemistry, Chemical Kinetics, NEET
What does the strength of the H-A bond refer to in the context of acid dissociation?

Options:
A The length of the bond
B The polarity of the bond
C The covalent nature of the bond
D The temperature of the solution

The correct answer is:
The polarity of the bond

Solution:
In the context of acid dissociation, the strength of the H-A bond refers to the polarity of the bond, which is one of the factors influencing the extent of dissociation.

Topic: Chemistry, Ionic Equilibrium, NEET
What does the subscript 'c' indicate in the equilibrium constant expression Kc?

Options:
A The speed of the reaction
B The concentration of reactants
C The concentration of products
D The equilibrium constant is dimensionless

The correct answer is:
The concentration of reactants

Solution:
The subscript 'c' in the equilibrium constant expression Kc indicates that it is expressed in concentrations of mol L-1 (concentration of reactants and products).

Topic: Chemistry, Chemical Equilibrium, NEET
What does the subscript 'f' in ∆fH indicate?

Options:
A Fusion
B Formation
C Fission
D Freezing

The correct answer is:
Formation

Solution:
The subscript 'f' in ∆fH indicates the formation of a compound from its elements.

Topic: Chemistry, Thermodynamics (C), NEET