datavorous/entrance-exam-dataset huggingface dataset:
What effect does the presence of a nitro group (-NO2) at the ortho- and para-positions have on the reactivity of haloarenes?

Options:
A It decreases reactivity
B It has no effect on reactivity
C It increases reactivity
D It changes the structure of haloarenes

The correct answer is:
It increases reactivity

Solution:
The presence of an electron-withdrawing group (-NO2) at the ortho- and para-positions increases the reactivity of haloarenes.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What effect does the presence of lone pairs on electronegative atoms like N, O, and F in hydrides have?

Options:
A It leads to the formation of ionic compounds.
B It increases the volatility of the compound.
C It results in hydrogen bond formation between molecules.
D It makes the compound highly reactive.

The correct answer is:
It results in hydrogen bond formation between molecules.

Solution:
The presence of lone pairs on highly electronegative atoms like N, O, and F in hydrides leads to hydrogen bond formation between the molecules.

Topic: Chemistry, Hydrogen, NEET
What effect does the sum of the first three ionization enthalpies have on the chemical properties of these elements?

Options:
A It has no effect.
B It increases their reactivity.
C It decreases their reactivity.
D It affects their physical properties.

The correct answer is:
It increases their reactivity.

Solution:
The sum of the first three ionization enthalpies for each of the elements is very high, and the effect of this will be apparent when studying their chemical properties, indicating that it increases their reactivity.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
What effect of magnetic or electric fields could Bohr's model not explain?

Options:
A The polarization effect
B The Doppler effect
C The Zeeman effect and Stark effect
D The refraction effect

The correct answer is:
The Zeeman effect and Stark effect

Solution:
Bohr's theory was unable to explain the splitting of spectral lines in the presence of a magnetic field (Zeeman effect) or an electric field (Stark effect).

Topic: Chemistry, Structure of Atom, NEET
What effects result from the repulsion between electron pairs in molecules?

Options:
A Idealized shapes
B Alterations in bond angles
C Localization of lone pairs
D Increased bond strength

The correct answer is:
Alterations in bond angles

Solution:
The repulsion effects between electron pairs in molecules result in alterations in bond angles.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What efforts can be made for controlling soil pollution?

Options:
A Increasing the use of chemical fertilizers.
B Proper disposal of industrial waste.
C Adopting organic farming practices.
D Burning agricultural residues in open fields.

The correct answer is:
Adopting organic farming practices.

Solution:
Correct Option is : (C)
Adopting organic farming practices.

Topic: Chemistry, Environmental Chemistry, NEET
What electrophile reacts with the phenoxide ion to form ortho hydroxybenzoic acid?

Options:
A Chlorine
B Carbon dioxide
C Nitric acid
D Sulfuric acid

The correct answer is:
Carbon dioxide

Solution:
Carbon dioxide is a weak electrophile that can react with the phenoxide ion to form ortho hydroxybenzoic acid through electrophilic aromatic substitution.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What elements are detected by Lassaigne's test in an organic compound?

Options:
A Carbon, nitrogen, sulphur, and halogens
B Oxygen, phosphorus, and sodium
C Copper, hydrogen, and chlorine
D Carbon, oxygen, and nitrogen

The correct answer is:
Carbon, nitrogen, sulphur, and halogens

Solution:
Nitrogen, sulphur, halogens, and carbon are detected by Lassaigne's test in an organic compound.

Topic: Chemistry, General Organic Chemistry, NEET
What elements are found in the anode mud obtained during copper refining?

Options:
A Zinc and selenium
B Antimony, selenium, and tellurium
C Gold and platinum
D Silver, gold, and platinum

The correct answer is:
Silver, gold, and platinum

Solution:
The anode mud from copper refining contains impurities such as antimony, selenium, tellurium, silver, gold, and platinum.

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
What elements constitute the majority of the earth's crust and oceans?

Options:
A Carbon and oxygen
B Hydrogen and helium
C Silicon and iron
D Nitrogen and helium

The correct answer is:
Carbon and oxygen

Solution:
The paragraph does not provide information about the elements constituting the majority of the earth's crust and oceans.

Topic: Chemistry, Hydrogen, NEET
What elements do the giant planets Jupiter and Saturn consist mostly of?

Options:
A Carbon and oxygen
B Nitrogen and helium
C Hydrogen and helium
D Silicon and iron

The correct answer is:
Hydrogen and helium

Solution:
The paragraph mentions that the giant planets Jupiter and Saturn consist mostly of hydrogen.

Topic: Chemistry, Hydrogen, NEET
What enables the continuity of the species generation after generation?

Options:
A Growth and death.
B Birth, growth and death.
C Reproduction.
D The cycle of birth, growth and death.

The correct answer is:
Reproduction.

Solution:
Reproduction enables the continuity of the species generation after generation.

Topic: Biology, Reproduction in Organisms, NEET
What encloses the glomerulus in the renal tubule?

Options:
A Proximal Convoluted Tubule (PCT)
B Bowman's Capsule
C Renal Corpuscle
D Medulla

The correct answer is:
Bowman's Capsule

Solution:
The renal tubule begins with a double-walled cup-like structure called Bowman's capsule, which encloses the glomerulus.

Topic: Biology, Excretory Products and their Elimination, NEET
What enhances the acidic strength of phenol?

Options:
A Presence of alkyl groups
B Presence of nitro groups
C Presence of halogen groups
D Presence of ether groups

The correct answer is:
Presence of nitro groups

Solution:
The presence of nitro groups enhances the acidic strength of phenol.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What ensures the continuity of plant and animal species on earth for several thousands of years?

Options:
A Natural death
B Old age
C Reproduction
D Aging

The correct answer is:
Reproduction

Solution:
The author mentions that there must be some processes in living organisms, such as reproduction, that ensure the continuity of plant and animal species on earth for several thousands of years.

Topic: Biology, Reproduction in Organisms, NEET
What environmental issue is caused by the slow degradation and accumulation of certain detergents in water bodies?

Options:
A Algal bloom
B Water scarcity
C Pollution and foaming
D Increased oxygen levels

The correct answer is:
Pollution and foaming

Solution:
Detergents that persist in water after sewage treatment cause foaming in rivers, ponds, and streams, leading to water pollution.

Topic: Chemistry, Chemistry in Everyday Life, NEET
What environmental problems can be caused by the accumulation of non-biodegradable polymeric solid wastes?

Options:
A None, as they do not pose any environmental concerns
B Acute environmental problems
C Minor inconveniences
D Improved environmental conditions

The correct answer is:
Acute environmental problems

Solution:
The accumulation of non-biodegradable polymeric solid wastes can cause acute environmental problems.

Topic: Chemistry, Polymers, NEET
What environmental threat may arise from the improper disposal of non-degradable industrial solid wastes?

Options:
A Air pollution
B Soil contamination
C Water pollution
D Noise pollution

The correct answer is:
Soil contamination

Solution:
Improper disposal of non-degradable industrial solid wastes can lead to soil contamination, which can have severe environmental consequences.

Topic: Chemistry, Environmental Chemistry, NEET
What enzyme catalyses the reactions of transamination?

Options:
A Nitrogenase
B Leg-haemoglobin
C Transaminase
D α-Ketoglutaric acid

The correct answer is:
Transaminase

Solution:
The enzyme transaminase catalyses the reactions of transamination, which involves the transfer of amino group from one amino acid to the keto group of a keto acid.

Topic: Biology, Mineral Nutrition, NEET
What enzyme is responsible for the conversion of proteins into amino acids in the intestine?

Options:
A Diastase
B Zymase
C Urease
D Pancreatic trypsin

The correct answer is:
Pancreatic trypsin

Solution:
The paragraph mentions that in the intestine, the pancreatic trypsin converts proteins into amino acids by hydrolysis.

Topic: Chemistry, Surface Chemistry, NEET
What equation is used to derive atomic orbitals in wave mechanics?

Options:
A Einstein's equation
B Newton's laws
C Schrödinger wave equation
D Heisenberg's uncertainty principle

The correct answer is:
Schrödinger wave equation

Solution:
The atomic orbitals are obtained from the solution of Schrödinger wave equation.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What ethical questions have arisen from the manipulation of microbes, plants, and animals?

Options:
A None
B Ethical questions have arisen from the manipulation of microbes, plants, and animals
C Ethical questions have arisen from the use of Recombinant DNA technology
D Ethical questions have arisen from the use of GM crops

The correct answer is:
Ethical questions have arisen from the manipulation of microbes, plants, and animals

Solution:
The current interest in the manipulation of microbes, plants, and animals has raised serious ethical questions.

Topic: Biology, Biotechnology and Its Applications, NEET
What evidence contradicts the assumption that there is no force of attraction between molecules in real gases?

Options:
A The observation that real gases can be liquefied on cooling and compressing.
B The fact that real gases have a definite volume.
C The presence of strong intermolecular forces in all gases.
D The absence of any observable evidence for attractive forces between gas molecules.

The correct answer is:
The observation that real gases can be liquefied on cooling and compressing.

Solution:
Correct Option is : (A)
The observation that real gases can be liquefied on cooling and compressing.

Topic: Chemistry, States of Matter, NEET
What experimental confirmation supported de Broglie's prediction about the dual behavior of electrons?

Options:
A The observation of electrons behaving as particles.
B The observation of electrons undergoing diffraction, characteristic of waves.
C The observation of electrons having no properties.
D The observation of electrons exhibiting magnetic behavior.

The correct answer is:
The observation of electrons undergoing diffraction, characteristic of waves.

Solution:
de Broglie's prediction was confirmed experimentally when it was found that an electron beam undergoes diffraction, which is characteristic of waves.

Topic: Chemistry, Structure of Atom, NEET
What external changes are visible after the last moult of a cockroach nymph?

Options:
A Mandibles become harder
B Anal cerci develop
C Both fore wings and hind wings develop
D Labium develops

The correct answer is:
Both fore wings and hind wings develop

Solution:
In cockroach, development is pauro metabolous. The nymph grows by moulting about 13 times to reach the adult form. The next to last nymphal stage has wing pads but only adult cockroaches have wings. Anal cerci are a pair of jointed filamentous structures in 10th segment of both sexes. Labium is a lover lip and a pair of mandibles are present in mouthparts of cockroach.

Topic: Biology, Structural Organisation in Animals, NEET, NEET 2013 (All India)
What external changes are visible after the last moulting of a cockroach nymph?

Options:
A Mandibles become harder
B Anal cerci develop
C Both fore wings and hind wings develop
D Labium develops

The correct answer is:
Both fore wings and hind wings develop

Solution:
Cockroaches show paurometabolous development. This is gradual metamorphosis. In this type the young ones resemble adults and have wings attached to the body. The young forms are known as nymphs. The nymph undergoes 13 times moulting to form adults. The next to last nymphal stage has wing pads but only adult cockroaches have wings. Thus, the nymph after the last moulting bears both forewings and hind wings.

Topic: Biology, Structural Organisation in Animals, NEET
What factor affecting enzyme activity the given figure represent?

Options:
A pH
B Temperature
C Concentration of substrate on enzyme activity
D None of the above

The correct answer is:
Concentration of substrate on enzyme activity

Solution:
The above graph represents the concentration of substrate on enzyme activity

Topic: Biology, Biomolecules (B), NEET
What factor affects the chemistry of nitrogen and restricts its covalency to four?

Options:
A High electronegativity
B Small bond length
C Interelectronic repulsion
D Absence of d orbitals in its valence shell

The correct answer is:
Absence of d orbitals in its valence shell

Solution:
The paragraph mentions that the absence of d orbitals in nitrogen's valence shell affects its chemistry and restricts its covalency to four.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What factor affects the covalent character of an ionic bond based on cation size and anion size?

Options:
A The smaller the cation and the larger the anion, the greater the covalent character.
B The larger the cation and the smaller the anion, the greater the covalent character.
C The charge on the cation and anion has no effect on covalent character.
D The covalent character is solely determined by the charge on the anion.

The correct answer is:
The smaller the cation and the larger the anion, the greater the covalent character.

Solution:
The covalent character of an ionic bond is greater when the cation is smaller and the anion is larger.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What factor causes the increase in ionization enthalpy as you move across a period in the periodic table?

Options:
A Increased atomic size.
B Decreased nuclear charge.
C Increased electron-electron repulsion.
D Decreased shielding.

The correct answer is:
Increased electron-electron repulsion.

Solution:
As you move across a period, increased electron-electron repulsion contributes to the increase in ionization enthalpy.

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
What factor contributes to the increase in metallic character down Group 15?

Options:
A Decrease in atomic size
B Increase in ionization enthalpy
C Similar valence electron configurations
D Transition to diatomic gases

The correct answer is:
Decrease in atomic size

Solution:
The paragraph attributes the increase in metallic character to the decrease in atomic size down the group.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What factor determines the colour of a colloidal solution, according to the paragraph?

Options:
A The concentration of the solute
B The refractive index of the dispersion medium
C The wavelength of light scattered by dispersed particles
D The temperature of the solution

The correct answer is:
The wavelength of light scattered by dispersed particles

Solution:
The colour of a colloidal solution is dependent on the wavelength of light scattered by the dispersed particles, as mentioned in the paragraph.

Topic: Chemistry, Surface Chemistry, NEET
What factor determines the formation of methanol from bromoethane?

Options:
A Temperature
B Pressure
C Reactant concentration
D Orientation of reactant molecules

The correct answer is:
Orientation of reactant molecules

Solution:
The formation of methanol from bromoethane depends upon the orientation of reactant molecules.

Topic: Chemistry, Chemical Kinetics, NEET
What factor determines the magnitude of surface tension in a liquid?

Options:
A Temperature
B Pressure
C Density
D Viscosity

The correct answer is:
Temperature

Solution:
The magnitude of surface tension depends on the attractive forces between molecules, as well as the temperature.

Topic: Chemistry, States of Matter, NEET
What factor determines the speed of the rusting reaction?

Options:
A The presence of air and moisture
B The concentration of iron
C The temperature of the environment
D The presence of silver nitrate

The correct answer is:
The presence of air and moisture

Solution:
Rusting of iron occurs in the presence of air and moisture.

Topic: Chemistry, Chemical Kinetics, NEET
What factor determines the strength of van der Waals’ forces near the critical temperatures?

Options:
A Nature of the adsorbate
B Size of the adsorbent particles
C Pressure of the adsorption process
D Temperature of the adsorption process

The correct answer is:
Temperature of the adsorption process

Solution:
The paragraph suggests that the strength of van der Waals’ forces is influenced by the critical temperatures of gases, and these forces are stronger near the critical temperatures.

Topic: Chemistry, Surface Chemistry, NEET
What factor does the rate law primarily depend on?

Options:
A Temperature
B Pressure
C Concentration of products
D Concentration of reactants

The correct answer is:
Concentration of reactants

Solution:
The rate law represents the rate of reaction in terms of the concentration of the reactants, indicating that it primarily depends on reactant concentration.

Topic: Chemistry, Chemical Kinetics, NEET
What factor does the speed distribution of gas molecules depend on besides temperature?

Options:
A Pressure
B Volume
C Mass of molecules
D Viscosity of the gas

The correct answer is:
Mass of molecules

Solution:
The speed distribution of gas molecules depends not only on temperature but also on the mass of the molecules.

Topic: Chemistry, States of Matter, NEET
What factor influences the amount of gas adsorbed by a solid, according to the paragraph?

Options:
A Size of the adsorbent particles
B Nature of the adsorbate
C Temperature of the adsorption process
D Pressure of the adsorption process

The correct answer is:
Nature of the adsorbate

Solution:
The paragraph states that the amount of gas adsorbed by a solid depends on the nature of the gas.

Topic: Chemistry, Surface Chemistry, NEET
What factor influences the position of the equilibrium in the reaction of sodium hydrogensulphite with aldehydes and ketones?

Options:
A Temperature
B Pressure
C pH level
D Steric reasons

The correct answer is:
Steric reasons

Solution:
The position of the equilibrium in the reaction of sodium hydrogensulphite with aldehydes and ketones is influenced by steric reasons.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What factor influences the wavelength of light scattered by dispersed particles?

Options:
A Temperature
B Refractive index of the dispersion medium
C Concentration of the solute
D Size and nature of the particles

The correct answer is:
Size and nature of the particles

Solution:
The paragraph states that the wavelength of light scattered by dispersed particles depends on the size and nature of the particles.

Topic: Chemistry, Surface Chemistry, NEET
What factor is responsible for the higher ionization enthalpy of group 14 members?

Options:
A The influence of inner core electrons
B The atomic number
C The number of valence electrons
D The electronegativity

The correct answer is:
The influence of inner core electrons

Solution:
The higher ionization enthalpy of group 14 members is due to the influence of inner core electrons.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
What factor largely determines the chemical behavior of dihydrogen and other molecules?

Options:
A Atomic number
B Bond length
C Bond dissociation enthalpy
D Molecular weight

The correct answer is:
Bond dissociation enthalpy

Solution:
Bond dissociation enthalpy largely determines the chemical behavior of dihydrogen and other molecules.

Topic: Chemistry, Hydrogen, NEET
What factor makes attractions between molecules stronger?

Options:
A Molecular size
B Molecular mass
C Electron configuration
D Molecular shape

The correct answer is:
Molecular size

Solution:
Attractions between molecules get stronger as the molecules get bigger in size.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What factor makes sigma (σ) bonds stronger than pi (π) bonds?

Options:
A Atomic number
B Molecular weight
C Extent of overlapping
D Bond polarity

The correct answer is:
Extent of overlapping

Solution:
The sigma (σ) bonds are stronger than pi (π) bonds because the extent of overlapping in sigma bonds is larger.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What factor prevents the ideal gas law from holding true when the gas in the chamber is compressed at a constant temperature till a final pressure of 100 atm, given that initially, there was 0.5 g of hydrogen gas in a cubic chamber of size 3cm at NTP?

Options:
A Change in temperature
B Presence of impurities
C Inter-molecular forces
D Change in volume

The correct answer is:
Inter-molecular forces

Solution:
Correct Option is : (C)
Inter-molecular forces

Topic: Chemistry, Kinetic Theory of Gases, NEET
What factor primarily contributes to the stabilization of the crystal structure in ionic solids?

Options:
A Electron gain enthalpy
B Ionization enthalpy
C Energy released in the formation of the crystal lattice
D Achieving an octet of electrons around the ionic species in the gaseous state

The correct answer is:
Energy released in the formation of the crystal lattice

Solution:
The crystal structure in ionic solids gets stabilized due to the energy released in the formation of the crystal lattice.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What factor primarily influences the difference in Λ°m values between different strong electrolytes?

Options:
A Concentration
B Temperature
C Electrolyte type
D Electrode material

The correct answer is:
Electrolyte type

Solution:
The difference in Λ°m values between different strong electrolytes is primarily influenced by the type of electrolyte.

Topic: Chemistry, Electrochemistry, NEET
What factors affect health?

Options:
A Genetic disorders, infections, and lifestyle
B Food and water intake, exercise, and habits
C Mental state, rest, and neural system
D Endocrine system, immune system, and good humor

The correct answer is:
Genetic disorders, infections, and lifestyle

Solution:
Health is affected by genetic disorders, infections, and lifestyle including food and water intake, rest, exercise, and habits.

Topic: Biology, Human Health and Diseases, NEET
What factors affect the net direction and rate of osmosis?

Options:
A Pressure gradient
B Concentration gradient
C Equilibrium of water in two chambers
D Both A) and B)

The correct answer is:
Both A) and B)

Solution:
The net direction and rate of osmosis depend on both the pressure gradient and the concentration gradient.

Topic: Biology, Transport in Plants, NEET
What factors can affect the basic strength of amines apart from the inductive effect?

Options:
A Solvation effect and steric hindrance
B Electronegativity of the substituents
C Colour of the amine compound
D Molecular weight of the amine

The correct answer is:
Solvation effect and steric hindrance

Solution:
Apart from the inductive effect, factors like solvation effect (interaction with solvent molecules) and steric hindrance (bulky substituents) can influence the basic strength of amines.

Topic: Chemistry, Amines, NEET
What factors can affect the rate of diffusion in the exchange of gases in the body?

Options:
A Solubility of gases
B Thickness of membranes involved in diffusion
C Surface area of Alveoli
D All of the above

The correct answer is:
All of the above

Solution:
The rate of diffusion in the exchange of gases in the body can be affected by various factors such as solubility of the gases, thickness of the membranes involved in diffusion and surface area of Alveoli.

Topic: Biology, Breathing and Exchange of Gases, NEET