datavorous/entrance-exam-dataset huggingface dataset:
What role does oxygen play in the formation of ozone in the atmosphere?

Options:
A Oxygen is a catalyst in the reaction.
B Oxygen reacts with nitrogen dioxide to form ozone.
C Oxygen combines with ozone to produce nitrogen dioxide.
D Oxygen combines with ozone to produce nitric oxide.

The correct answer is:
Oxygen reacts with nitrogen dioxide to form ozone.

Solution:
Oxygen reacts with nitrogen dioxide (NO2) to form ozone (O3) in the atmosphere. This reaction helps in the formation of ozone, a key component of photochemical smog.

Topic: Chemistry, Environmental Chemistry, NEET
What role does silica play in the metallurgy of copper?

Options:
A It acts as a reducing agent.
B It helps in the formation of slag.
C It improves the electrical conductivity of copper.
D It facilitates the separation of impurities.

The correct answer is:
It helps in the formation of slag.

Solution:
Correct Option is : (B)
It helps in the formation of slag.

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
What role does sodium hydroxide play in the generation of the phenoxide ion from phenol?

Options:
A It acts as a reducing agent.
B It serves as a catalyst.
C It donates a proton to phenol.
D It donates an electron to phenol.

The correct answer is:
It donates a proton to phenol.

Solution:
Sodium hydroxide (NaOH) donates a hydroxide ion (OH-) to phenol, leading to the formation of the phenoxide ion through protonation.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What role does sodium play in the decarboxylation of benzoic acid with soda lime?

Options:
A Acidic catalyst
B Reducing agent
C Solvent
D Oxidizing agent

The correct answer is:
Reducing agent

Solution:
Sodium in the soda lime mixture serves as a reducing agent in the decarboxylation reaction, aiding in the removal of the carboxylic acid group.

Topic: Chemistry, Hydrocarbons, NEET
What role does steric hindrance play in the choice between substitution and elimination reactions during alcohol dehydration?

Options:
A It favours substitution reactions.
B It favours elimination reactions.
C It has no impact on the reaction pathway.
D It promotes both substitution and elimination equally.

The correct answer is:
It favours elimination reactions.

Solution:
Steric hindrance hinders the approach of nucleophiles in substitution reactions, promoting elimination reactions during alcohol dehydration.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What role does temperature play in the extent of a reaction in equilibrium?

Options:
A Temperature does not affect the extent of the reaction.
B Higher temperature favors the formation of products.
C Higher temperature favors the formation of reactants.
D Temperature only affects the color of the reactants.

The correct answer is:
Higher temperature favors the formation of products.

Solution:
Temperature is one of the experimental conditions that can affect the extent of a reaction in equilibrium, favoring either the formation of products or reactants.

Topic: Chemistry, Chemical Equilibrium, NEET
What role does the atomization enthalpy of a metal play in its reducing nature?

Options:
A Higher atomization enthalpy increases reducing power.
B Lower atomization enthalpy increases reducing power.
C Atomization enthalpy does not affect reducing power.
D Atomization enthalpy is inversely related to reducing power.

The correct answer is:
Higher atomization enthalpy increases reducing power.

Solution:
A higher atomization enthalpy increases the reducing power of a metal.

Topic: Chemistry, s Block Elements, NEET
What role does the base play in the catalysis of the reaction between aldehydes/ketones and hydrogen cyanide (HCN)?

Options:
A It increases the concentration of HCN
B It decreases the concentration of HCN
C It increases the reactivity of HCN
D It generates a stronger acid

The correct answer is:
It increases the reactivity of HCN

Solution:
The base catalyses the reaction by increasing the reactivity of hydrogen cyanide (HCN), making it more effective in adding to the carbonyl compounds.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What role does the catalyst V2O5 play in the Contact Process for sulfuric acid manufacture?

Options:
A It accelerates the conversion of H2SO4 to SO3
B It promotes the decomposition of SO3 to SO2
C It increases the reaction rate in the conversion of SO2 to SO3
D It acts as an acid catalyst

The correct answer is:
It increases the reaction rate in the conversion of SO2 to SO3

Solution:
In the Contact Process, the catalyst V2O5 increases the reaction rate in the conversion of SO2 to SO3.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What role does the chain terminating step play in polymerization?

Options:
A It generates free radicals.
B It propagates the polymer chain.
C It stops the polymerization reaction.
D It increases the size of the monomers.

The correct answer is:
It stops the polymerization reaction.

Solution:
The chain terminating step in polymerization stops the polymerization reaction by the reaction of two radicals.

Topic: Chemistry, Polymers, NEET
What role does the dispersion medium play in the process of peptization?

Options:
A Coagulating agent
B Solvent
C Peptizing agent
D Catalyst

The correct answer is:
Solvent

Solution:
The dispersion medium in the process of peptization acts as a solvent.

Topic: Chemistry, Surface Chemistry, NEET
What role does the immune system play in allergic reactions?

Options:
A It recognizes and responds to foreign antigens
B It causes the release of histamine and serotonin
C It attacks self-cells
D It plays a significant role

The correct answer is:
It plays a significant role

Solution:
The immune system plays a significant role in allergic reactions, as it is responsible for the release of histamine and serotonin.

Topic: Biology, Human Health and Diseases, NEET
What role does the ionization enthalpy play in the stability of an ionic compound?

Options:
A It is the primary factor determining stability.
B It contributes to the energy absorbed.
C It is compensated for by the electron gain enthalpy.
D It is not relevant to the stability of ionic compounds.

The correct answer is:
It contributes to the energy absorbed.

Solution:
The ionization enthalpy contributes to the energy absorbed, but the primary factor for stability is the energy released in the formation of the crystal lattice.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What role does the molecular interaction play in a solution of alcohol and water?

Options:
A Molecular interaction in a solution of alcohol and water is negligible, and they do not affect each other's properties.
B Molecular interaction leads to complete separation of alcohol and water in a solution, with no mixing or interaction.
C There is strong hydrogen bonding in alcohol molecules as well as water molecules. On mixing the molecular interactions are weakened. Hence, they show positive deviations from ideal behaviour. As a result, the solution will have higher vapour pressure and lower boiling point than that of water and alcohol.
D Molecular interaction causes alcohol and water to repel each other, preventing them from forming a solution.

The correct answer is:
There is strong hydrogen bonding in alcohol molecules as well as water molecules. On mixing the molecular interactions are weakened. Hence, they show positive deviations from ideal behaviour. As a result, the solution will have higher vapour pressure and lower boiling point than that of water and alcohol.

Solution:
Correct Option is : (C)
There is strong hydrogen bonding in alcohol molecules as well as water molecules. On mixing the molecular interactions are weakened. Hence, they show positive deviations from ideal behaviour. As a result, the solution will have higher vapour pressure and lower boiling point than that of water and alcohol.

Topic: Chemistry, Solutions, NEET
What role does the probability or steric factor (P) play in chemical reactions?

Options:
A It determines the activation energy
B It accounts for temperature changes
C It considers the proper orientation of molecules during collisions
D It affects pressure changes

The correct answer is:
It considers the proper orientation of molecules during collisions

Solution:
The probability or steric factor (P) takes into account the fact that molecules must be properly oriented during collisions in chemical reactions.

Topic: Chemistry, Chemical Kinetics, NEET
What role does the valence shell of an atom play in the process of hybridisation?

Options:
A The valence shell determines the type of hybridisation.
B The valence shell provides electrons for hybridisation.
C The valence shell determines the energy levels of orbitals.
D The valence shell is not relevant to hybridisation.

The correct answer is:
The valence shell determines the type of hybridisation.

Solution:
The valence shell of the atom determines the type of hybridisation that will occur.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What role does zinc dust play in the conversion of phenol to benzene?

Options:
A It acts as a catalyst
B It provides oxygen for the reaction
C It reduces phenol to benzene
D It increases the reaction temperature

The correct answer is:
It reduces phenol to benzene

Solution:
Zinc dust acts as a reducing agent, converting phenol to benzene by removing oxygen from the phenol molecule.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What role does zinc play in the reduction of phenol to benzene?

Options:
A Zinc acts as a catalyst
B Zinc forms a complex with phenol
C Zinc acts as an oxidizing agent
D Zinc acts as a reducing agent

The correct answer is:
Zinc acts as a reducing agent

Solution:
In the reduction of phenol to benzene, zinc acts as a reducing agent, helping to remove the oxygen atom from the phenol molecule.

Topic: Chemistry, Hydrocarbons, NEET
What runs close to the "F" actins throughout its length?

Options:
A Troponin
B Tropomyosin
C Myosin
D F (Filamentous) actin

The correct answer is:
Tropomyosin

Solution:
Two filaments of another protein, tropomyosin also run close to the "F" actins throughout its length.

Topic: Biology, Locomotion and Movement, NEET
What series of wavelengths will be emitted when a 12.5 eV electron beam is used to bombard gaseous hydrogen at room temperature?

Options:
A Lyman series only
B Balmer series only
C Lyman and Balmer series
D Paschen series

The correct answer is:
Lyman and Balmer series

Solution:
Correct Option is : (C)
Lyman and Balmer series

Topic: Chemistry, Atomic Physics, NEET
What set of three quantum numbers characterizes the quantized energy states and corresponding wave functions of the electron?

Options:
A Principal quantum number n, magnetic quantum number ml, and spin quantum number s
B Azimuthal quantum number l, magnetic quantum number ml, and spin quantum number s
C Principal quantum number n, azimuthal quantum number l, and magnetic quantum number ml
D Principal quantum number n, azimuthal quantum number l, and spin quantum number s

The correct answer is:
Principal quantum number n, azimuthal quantum number l, and magnetic quantum number ml

Solution:
The quantized energy states and corresponding wave functions of the electron are characterized by a set of three quantum numbers: principal quantum number n, azimuthal quantum number l, and magnetic quantum number ml.

Topic: Chemistry, Structure of Atom, NEET
What shape are the guard cells in grasses?

Options:
A Bean-shaped
B Dumb-bell shaped
C Rectangular
D Triangular

The correct answer is:
Dumb-bell shaped

Solution:
In grasses, the guard cells are dumb-bell shaped.

Topic: Biology, Anatomy of Flowering Plants, NEET
What shape do the anions form at the critical micelle concentration?

Options:
A Cubic shape
B Spherical shape
C Linear shape
D Helical shape

The correct answer is:
Spherical shape

Solution:
At the critical micelle concentration, the anions aggregate to form a spherical shape.

Topic: Chemistry, Surface Chemistry, NEET
What shape do the orbitals formed due to sidewise overlapping have in the case of a pi (π) bond?

Options:
A Spherical
B Saucer type charged clouds
C Linear
D Tetrahedral

The correct answer is:
Saucer type charged clouds

Solution:
The orbitals formed due to sidewise overlapping in the case of a pi (π) bond as consisting of two saucer-type charged clouds above and below the plane of the participating atoms.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What shape is chosen as the unit cell in two dimensions, with sides of length 'a' and 'b' and an angle 'α' between these sides?

Options:
A Square
B Rectangle
C Parallelogram
D Hexagon

The correct answer is:
Parallelogram

Solution:
In two dimensions, a parallelogram with sides of length 'a' and 'b' and an angle 'α' between these sides is chosen as the unit cell, as mentioned in the paragraph.

Topic: Chemistry, Solid State, NEET
What shape satisfies the condition of having the lowest energy state for a liquid?

Options:
A Rectangular
B Spherical
C Cylindrical
D Cubic

The correct answer is:
Spherical

Solution:
The lowest energy state of the liquid is achieved when it has a spherical shape.

Topic: Chemistry, States of Matter, NEET
What should be added to a redox reaction equation in water to balance ionic charges if it's carried out in a neutral solution?

Options:
A H+ ions
B OH- ions
C Water molecules (H2O)
D Na+ ions

The correct answer is:
Water molecules (H2O)

Solution:
In a neutral solution, you should add water molecules (H2O) to balance the ionic charges.

Topic: Chemistry, Redox Reactions, NEET
What should be added to the plastics, to change from hard to soft and readily workable into new object.

Options:
A Catalysts
B Telomers
C Plasticisers
D Vulcaniser

The correct answer is:
Plasticisers

Solution:
e.g.- PVC is extremely stiff and hard but the addition of di-n butyl phthalate Plasticizers makes it soft and rubber like.

Topic: Chemistry, Polymers, NEET
What should be done if a satellite in an elliptic orbit with an aphelion of 6R and a perihelion of 2R, where R = 6400 km, needs to be transferred to a circular orbit of radius 6R? [G = 6.67 × 10–11SI units and M = 6 × 1024kg]

Options:
A Decrease the velocity of the satellite by 0.95 km/s using appropriate mechanisms.
B Increase the velocity of the satellite by 0.95 km/s using suitable rockets.
C Decrease the altitude of the satellite by 6400 km using appropriate thrusters.
D Increase the altitude of the satellite by 6400 km through suitable adjustments.

The correct answer is:
Increase the velocity of the satellite by 0.95 km/s using suitable rockets.

Solution:
Correct Option is : (B)
Increase the velocity of the satellite by 0.95 km/s using suitable rockets.

Topic: Chemistry, Gravitation, NEET
What should be done if the increase or decrease in oxidation number per atom and for the entire molecule/ion is not equal in a redox reaction?

Options:
A Multiply by a suitable number to make them equal
B Leave the reaction unbalanced
C Adjust the temperature of the reaction
D Add more reactants

The correct answer is:
Multiply by a suitable number to make them equal

Solution:
To balance a redox reaction, you may need to adjust the coefficients by multiplying by suitable numbers to make the changes in oxidation number equal.

Topic: Chemistry, Redox Reactions, NEET
What should be done to prevent the entry of mosquitoes in homes to prevent vector-borne diseases?

Options:
A Dispose of waste and excreta properly
B Provide doors and windows with wire mesh
C Consume clean food and water
D Avoid close contact with infected persons

The correct answer is:
Provide doors and windows with wire mesh

Solution:
To prevent the entry of mosquitoes and thus prevent vector-borne diseases like dengue and chikungunya, doors and windows should be provided with wire mesh.

Topic: Biology, Human Health and Diseases, NEET
What should be done to protect ourselves from noise pollution?

Options:
A Increase the permissible sound-levels of crackers and loudspeakers
B Increase the use of muffling noise
C Stringent following of laws
D Decrease the permissible sound-levels of crackers and loudspeakers

The correct answer is:
Stringent following of laws

Solution:
Stringent following of laws laid down in relation to noise, like delimitation of horn-free zones around hospitals and schools, permissible sound-levels of crackers and loudspeakers, etc, need to be enforced to protect ourselves from noise pollution.

Topic: Biology, Environmental Issues, NEET
What should be done with biodegradable waste?

Options:
A Dispose of in a landfill
B Burn it
C Leave it in deep pits in the ground
D Send it to a recycling center

The correct answer is:
Leave it in deep pits in the ground

Solution:
Biodegradable waste can be left in deep pits in the ground to allow for natural breakdown.

Topic: Biology, Environmental Issues, NEET
What should be included in the calculations of energy content, biomass or numbers?

Options:
A Only a few individuals at any trophic level
B All organisms at that trophic level
C Only the producers
D Only the consumers

The correct answer is:
All organisms at that trophic level

Solution:
Any calculations of energy content, biomass or numbers must include all organisms at that trophic level.

Topic: Biology, Ecosystem, NEET
What should be the angular velocity of earth about its own axis so that the weight of the body at the equator would become 34th of its present value?

Options:
A 1400 rad s-1
B 1800 rad s-1
C 11600 rad s-1
D 13200 rad s-1

The correct answer is:
11600 rad s-1

Solution:
Weight of body =34 of present weight so
geff =34g
at equator
geff=g - Rω2=34g
ω=g4R=12 gR=12 × 1800
=11600 rad s-1

Topic: Physics, Gravitation, NEET
What should be the approximate thickness of a commonly used MgF2 (n = 1.38) dielectric film coated on photographic lenses to ensure maximum transmission at the center of the visible spectrum (5500 Å)?

Options:
A 100 Å
B 500 Å
C 1000 Å
D 1500 Å

The correct answer is:
1000 Å

Solution:
Correct Option is : (C)
1000 Å

Topic: Chemistry, Wave Optics, NEET
What should be the considerations during the extraction of metals by electrochemical method?

Options:
A Size of electrodes is considered
B Density of metal is considered
C Reactivity of metal produced and suitability of electrodes is considered
D Amount of metal produced is considered

The correct answer is:
Reactivity of metal produced and suitability of electrodes is considered

Solution:
Correct Option is : (C)
Reactivity of metal produced and suitability of electrodes is considered

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
What should be the energy relationship between the orbitals undergoing hybridisation?

Options:
A They should have significantly different energy.
B They should have almost equal energy.
C It depends on the type of atom.
D Cannot be determined.

The correct answer is:
They should have almost equal energy.

Solution:
The orbitals undergoing hybridisation should have almost equal energy.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What should be the focus of feeding cattle in dairy farming?

Options:
A Quantity of fodder
B Quality of fodder
C Both A) and B)
D Neither A) nor B)

The correct answer is:
Both A) and B)

Solution:
The feeding of cattle in dairy farming should be focused on both the quality and quantity of fodder.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
What should be the order of the numerical roots for the systematic nomenclature of elements?

Options:
A In alphabetical order.
B In order of their discovery.
C In order of digits that make up the atomic number.
D In reverse order of digits that make up the atomic number.

The correct answer is:
In order of digits that make up the atomic number.

Solution:
The numerical roots are put together in order of digits which make up the atomic number.

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
What should be the power of a microscope if the near vision of an average person is 25 cm and an object is to be viewed with an angular magnification of 10?

Options:
A 20 dioptres
B 30 dioptres
C 40 dioptres
D 50 dioptres

The correct answer is:
40 dioptres

Solution:
Correct Option is : (C)
40 dioptres

Topic: Chemistry, Ray Optics, NEET
What should the society's response be towards people infected with HIV/AIDS?

Options:
A Shunning them
B Helping and sympathizing with them
C Ignoring their presence
D Spreading the disease to others

The correct answer is:
Helping and sympathizing with them

Solution:
People infected with HIV/AIDS need help and sympathy from society instead of being shunned.

Topic: Biology, Human Health and Diseases, NEET
What should workers in industries with dust exposure wear?

Options:
A Protective masks
B Medicines
C Lung Damage medicines
D None of the above

The correct answer is:
Protective masks

Solution:
Workers in industries with dust exposure should wear protective masks to avoid serious lung damage.

Topic: Biology, Breathing and Exchange of Gases, NEET
What signals the rhythm centre to make necessary adjustments in the respiratory process?

Options:
A Oxygen
B Pneumotaxic Centre
C Chemosensitive Area
D Receptors associated with aortic arch and carotid artery

The correct answer is:
Chemosensitive Area

Solution:
The chemosensitive area can signal the rhythm centre to make necessary adjustments in the respiratory process by which these substances can be eliminated.

Topic: Biology, Breathing and Exchange of Gases, NEET
What simple ratio is for the masses of oxygen combining with hydrogen for water and hydrogen peroxide?

Options:
A 1:1
B 2:1
C 1:2
D 2:2

The correct answer is:
1:2

Solution:
The masses of oxygen (i.e., 16g and 32g) combine with a fixed mass of hydrogen (2g) in a simple ratio of 1:2.

Topic: Chemistry, Some Basic Concepts of Chemistry, NEET
What slows down during the last phase of life span in both plants and animals?

Options:
A Hormones
B Metabolism
C Environmental factors
D None of the above

The correct answer is:
Metabolism

Solution:
There are concomitant changes in the body (like slowing of metabolism) during the last phase of life span in both plants and animals.

Topic: Biology, Reproduction in Organisms, NEET
What solution is used in the leaching process for silver and gold?

Options:
A HCl
B NaOH
C NaCN or KCN
D H2SO4

The correct answer is:
NaCN or KCN

Solution:
The metals are leached with a dilute solution of NaCN or KCN.

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
What solvents can cause dehydration of the dispersed phase in hydrophilic sols?

Options:
A Water and oil
B Alcohol and acetone
C Acetone and water
D Oil and alcohol

The correct answer is:
Alcohol and acetone

Solution:
The paragraph mentions that solvents like alcohol and acetone can cause dehydration of the dispersed phase in hydrophilic sols.

Topic: Chemistry, Surface Chemistry, NEET
What sorts of information can you draw from the following reaction? (CN)2(g) + 2OH-(aq) → CN-(aq) + CNO-(aq) + H2O(l) What information can be inferred from the reaction?

Options:
A (CN)2is a reducing agent.
B CNO-is a strong oxidizing agent.
C (CN)2can react with hydroxide ions.
D CNO-is highly stable.

The correct answer is:
(CN)2can react with hydroxide ions.

Solution:
Correct Option is : (C)
(CN)2can react with hydroxide ions.

Topic: Chemistry, Redox Reactions, NEET
What species is produced when water accepts a proton from HCl in the ionization of hydrochloric acid?

Options:
A HCl
B Cl-
C H2O
D H3O+

The correct answer is:
H3O+

Solution:
The paragraph states that the species H3O+ is produced when water accepts a proton from HCl in the ionization of hydrochloric acid.

Topic: Chemistry, Ionic Equilibrium, NEET
What specific compound is extracted as a result of the leaching process from bauxite using NaOH?

Options:
A Sodium hydroxide
B Sodium aluminate
C Aluminum oxide
D Titanium oxide

The correct answer is:
Sodium aluminate

Solution:
Sodium aluminate is extracted from bauxite as a result of the leaching process using NaOH.

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET