datavorous/entrance-exam-dataset huggingface dataset:
Why is it better to consider the respiratory pathway as an amphibolic pathway rather than a catabolic one?

Options:
A The respiratory pathway is involved in both catabolism and anabolism
B The respiratory pathway is only involved in catabolism
C The respiratory pathway is only involved in anabolism
D The respiratory pathway is not involved in either catabolism or anabolism

The correct answer is:
The respiratory pathway is involved in both catabolism and anabolism

Solution:
The respiratory pathway is involved in both the breakdown and synthesis of different substrates and thus it would be better to consider it as an amphibolic pathway.

Topic: Biology, Respiration in Plants, NEET
Why is it challenging to generalize the relative stabilities of oxidation states based on ionization enthalpies?

Options:
A Ionization enthalpies are inconsistent
B Ionization enthalpies are too low
C The problem is too complex
D The elements have low atomic numbers

The correct answer is:
The problem is too complex

Solution:
The relative stabilities of oxidation states are a complex problem not amenable to ready generalization based solely on ionization enthalpies.

Topic: Chemistry, d and f Block Elements, NEET
Why is it difficult for many nations to conserve their entire biological wealth?

Options:
A Due to limited conservation resources.
B Due to the conflict between development and conservation.
C Due to a lack of support from conservationists.
D Due to a lack of biodiversity hotspots in the world.

The correct answer is:
Due to the conflict between development and conservation.

Solution:
Many nations find it unrealistic and economically not feasible to conserve all their biological wealth due to the conflict between development and conservation.

Topic: Biology, Biodiversity and its Conservation, NEET
Why is it difficult to get rid of water hyacinth?

Options:
A It has beautiful flowers and leaves
B It can propagate vegetatively at a phenomenal rate
C It is a very slow grower
D None of the above

The correct answer is:
It can propagate vegetatively at a phenomenal rate

Solution:
Water hyacinth is difficult to get rid of because it can propagate vegetatively at a phenomenal rate and spread all over the water body in a short period of time.

Topic: Biology, Reproduction in Organisms, NEET
Why is it difficult to obtain oxidation states greater than two for copper, nickel, and zinc?

Options:
A They have low atomic numbers
B They have high atomic numbers
C They have low ionization energies
D They have high third ionization enthalpies

The correct answer is:
They have high third ionization enthalpies

Solution:
The high values for third ionization enthalpies of copper, nickel, and zinc indicate why it is difficult to obtain oxidation states greater than two for these elements.

Topic: Chemistry, d and f Block Elements, NEET
Why is it easier to pull a lawn mower than to push it?

Options:
A Because pulling reduces the effective weight of the mower.
B Because pushing increases the effective weight of the mower.
C Because pulling requires less force due to the angle of applied force.
D Because pushing increases friction between the blades and the grass.

The correct answer is:
Because pulling reduces the effective weight of the mower.

Solution:
Correct Option is : (A)
Because pulling reduces the effective weight of the mower.

Topic: Chemistry, Laws of Motion, NEET
Why is it easier to remove the fourth 2p-electron from oxygen than one of the three 2p-electrons from nitrogen?

Options:
A Oxygen has fewer 2p-electrons.
B Oxygen has a smaller nucleus.
C Oxygen has more shielding electrons.
D Oxygen has greater electron-electron repulsion.

The correct answer is:
Oxygen has greater electron-electron repulsion.

Solution:
In the oxygen atom, two of the four 2p-electrons must occupy the same 2p-orbital, resulting in increased electron-electron repulsion, making it easier to remove an electron compared to nitrogen.

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Why is it essential to purify organic compounds?

Options:
A To increase their impurity content
B To make them more dangerous
C To enhance their color
D To ensure their quality and remove impurities

The correct answer is:
To ensure their quality and remove impurities

Solution:
Purifying organic compounds is essential to ensure their quality and remove impurities.

Topic: Chemistry, General Organic Chemistry, NEET
Why is it essential to wash the precipitate with water before estimating it quantitatively?

Options:
A To remove any unreacted reagents.
B To remove impurities and excess of the reagents.
C To increase the yield of the reaction.
D To prevent the precipitation process from reversing.

The correct answer is:
To remove impurities and excess of the reagents.

Solution:
Correct Option is : (B)
To remove impurities and excess of the reagents.

Topic: Chemistry, Surface Chemistry, NEET
Why is it important for atomic orbitals to have the same symmetry to combine?

Options:
A To enhance electron repulsion
B To create complex shapes
C To ensure stability
D To facilitate electron transfer

The correct answer is:
To ensure stability

Solution:
It is important for atomic orbitals to have the same symmetry to combine because this ensures the stability of the resulting molecular orbitals.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Why is it important for the orbitals involved in hybridisation to have almost equal energy?

Options:
A To ensure the formation of unstable compounds
B To minimize electron repulsion between orbitals
C To increase the energy of hybrid orbitals
D To prevent the formation of hybrid orbitals

The correct answer is:
To minimize electron repulsion between orbitals

Solution:
Orbitals with almost equal energy are important in hybridisation to minimize electron repulsion between orbitals and achieve stability.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Why is it important to add concentrated sulphuric acid slowly to water when preparing a sulphuric acid solution?

Options:
A To reduce the concentration of the acid
B To increase the heat evolution
C To avoid excessive heat and splattering
D To improve the solubility of sulphuric acid in water

The correct answer is:
To avoid excessive heat and splattering

Solution:
Adding concentrated sulphuric acid slowly to water helps avoid excessive heat and splattering, as the process is highly exothermic.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Why is it important to consider reaction mechanisms in addition to balanced chemical equations?

Options:
A Mechanisms help in determining the stoichiometric coefficients.
B Mechanisms provide a detailed understanding of how a reaction occurs.
C Balanced equations are often inaccurate.
D Mechanisms are required for all chemical reactions.

The correct answer is:
Mechanisms provide a detailed understanding of how a reaction occurs.

Solution:
Considering reaction mechanisms is important because they provide a detailed understanding of how a reaction occurs, which is not provided by balanced chemical equations alone.

Topic: Chemistry, Chemical Kinetics, NEET
Why is it important to determine the molecular mass of polymers?

Options:
A To control the temperature of polymerization
B To calculate the volume of the polymer
C To ensure uniform chain length in all polymers
D To understand and predict their properties and behavior

The correct answer is:
To understand and predict their properties and behavior

Solution:
Determining the molecular mass of polymers is important because it helps in understanding and predicting their properties and behavior, which is crucial for various applications.

Topic: Chemistry, Polymers, NEET
Why is it important to ensure the quality of water?

Options:
A To increase the cost of water treatment
B To reduce water availability
C To protect aquatic life and human health
D To promote water pollution

The correct answer is:
To protect aquatic life and human health

Solution:
Ensuring the quality of water is important to protect aquatic life and human health from the harmful effects of water pollution.

Topic: Chemistry, Environmental Chemistry, NEET
Why is it important to have a clean surface in surface studies?

Options:
A A clean surface prevents the formation of chemical bonds with adsorbates.
B A clean surface provides a uniform platform for adsorption.
C A clean surface ensures accurate measurements and observations in surface studies.
D A clean surface prevents the occurrence of physisorption.

The correct answer is:
A clean surface ensures accurate measurements and observations in surface studies.

Solution:
Correct Option is : (C)
A clean surface ensures accurate measurements and observations in surface studies.

Topic: Chemistry, Surface Chemistry, NEET
Why is it important to have a high copy number of bacteriophage or plasmid genome in a cell?

Options:
A It makes it easy to link foreign DNA
B It facilitates selection of non-recombinants
C It reduces the number of copies of the genome
D It does not have any importance

The correct answer is:
It makes it easy to link foreign DNA

Solution:
With a high copy number of bacteriophage or plasmid genome in a cell, it becomes easier to link an alien piece of DNA with bacteriophage or plasmid DNA and multiply its numbers.

Topic: Biology, Biotechnology - Principles and Processes, NEET
Why is it important to have an accurate measurement of pH in biological and cosmetic applications?

Options:
A Accurate pH measurement is not necessary for these applications.
B The pH of a solution can impact the effectiveness and safety of products in these applications.
C Biological and cosmetic applications do not involve pH-sensitive processes.
D pH measurement is primarily used for industrial purposes.

The correct answer is:
The pH of a solution can impact the effectiveness and safety of products in these applications.

Solution:
The pH of a solution can affect the performance and safety of products in biological and cosmetic applications, making accurate pH measurement crucial.

Topic: Chemistry, Ionic Equilibrium, NEET
Why is it important to properly collect and dispose of domestic waste?

Options:
A To generate income for the poor.
B To encourage recycling.
C To prevent contamination of ground water.
D To reduce the population of cattle.

The correct answer is:
To prevent contamination of ground water.

Solution:
Properly collecting and disposing of domestic waste is essential to prevent the contamination of ground water.

Topic: Chemistry, Environmental Chemistry, NEET
Why is it less likely for the electron-rich nucleophile to approach electron-rich arenes?

Options:
A Because of attractive forces between them
B Because of possible repulsion
C Because of the strong covalent bond formed
D Because of resonance stabilization

The correct answer is:
Because of possible repulsion

Solution:
It is less likely for the electron-rich nucleophile to approach electron-rich arenes due to the possibility of repulsion.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
Why is it mentioned that the surroundings are important "for all practical purposes" in thermodynamics?

Options:
A To emphasize their theoretical significance
B To highlight their role in energy transformations
C To indicate that the surroundings are not always relevant
D To stress their limited influence on the system

The correct answer is:
To highlight their role in energy transformations

Solution:
The phrase "for all practical purposes" suggests that the surroundings play a significant role in energy transformations involving the system, making them practically

Topic: Chemistry, Thermodynamics (C), NEET
Why is it more practical to use state functions rather than specifying the position and velocity of each particle when describing a system's state in thermodynamics?

Options:
A State functions provide more accurate information.
B State functions can be easily measured experimentally.
C Specifying particle positions is impossible.
D State functions simplify the description of a system's state.

The correct answer is:
State functions simplify the description of a system's state.

Solution:
State functions simplify the description of a system's state by representing average properties, making them more practical and less complex than specifying individual particle positions and velocities.

Topic: Chemistry, Thermodynamics (C), NEET
Why is it necessary to apply newer technologies in addition to conventional practices of animal breeding and care?

Options:
A To achieve improvement in quality and productivity
B To reduce the world livestock population
C To increase the contribution to the world farm produce
D To enhance the artistic skills of farmers

The correct answer is:
To achieve improvement in quality and productivity

Solution:
The productivity per unit is very low, hence in addition to conventional practices of animal breeding and care, newer technologies also have to be applied to achieve improvement in quality and productivity.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
Why is it necessary to avoid even traces of moisture during the use of a Grignard reagent?

Options:
A Moisture can neutralize the acidity of the Grignard reagent.
B Grignard reagents are highly reactive and react with water to give corresponding hydrocarbons.
C Moisture can diminish the reactivity of the Grignard reagent.
D Moisture can decrease the solubility of the Grignard reagent in organic solvents.

The correct answer is:
Grignard reagents are highly reactive and react with water to give corresponding hydrocarbons.

Solution:
Correct Option is : (B)
Grignard reagents are highly reactive and react with water to give corresponding hydrocarbons.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
Why is it necessary to classify organic compounds based on their structures?

Options:
A To simplify the study of organic chemistry
B To organize them into families or homologous series
C To determine their physical properties
D To distinguish between natural and synthetic compounds

The correct answer is:
To organize them into families or homologous series

Solution:
Organic compounds need to be classified on the basis of their structures to organize them into families or homologous series.

Topic: Chemistry, General Organic Chemistry, NEET
Why is it necessary to reduce the concentration of soluble impurities in colloidal solutions?

Options:
A To enhance stability
B To increase coagulation
C To promote precipitation
D To reach a requisite minimum

The correct answer is:
To reach a requisite minimum

Solution:
It is necessary to reduce the concentration of soluble impurities in colloidal solutions to reach a requisite minimum.

Topic: Chemistry, Surface Chemistry, NEET
Why is it necessary to use acetic acid and not sulphuric acid for acidification of sodium extract for testing sulphur by lead acetate test?

Options:
A Acetic acid is less corrosive and safer to handle than sulphuric acid, making it a preferred choice for acidification in the laboratory.
B Sulphuric acid can not react with lead acetate to form insoluble lead sulphate, which would interfere with the lead acetate test for sulphur.
C Although the addition of sulphuric acid will precipitate lead sulphate, the addition of acetic acid will ensure a complete precipitation of sulphur in the form of lead sulphate due to common ion effect. Hence, it is necessary to use acetic acid for acidification of sodium extract for testing sulphur by lead acetate test.
D Sulphuric acid can react with sodium to form insoluble sodium sulphate, which would interfere with the lead acetate test for sulphur.

The correct answer is:
Although the addition of sulphuric acid will precipitate lead sulphate, the addition of acetic acid will ensure a complete precipitation of sulphur in the form of lead sulphate due to common ion effect. Hence, it is necessary to use acetic acid for acidification of sodium extract for testing sulphur by lead acetate test.

Solution:
Correct Option is : (C)
Although the addition of sulphuric acid will precipitate lead sulphate, the addition of acetic acid will ensure a complete precipitation of sulphur in the form of lead sulphate due to common ion effect. Hence, it is necessary to use acetic acid for acidification of sodium extract for testing sulphur by lead acetate test.

Topic: Chemistry, General Organic Chemistry, NEET
Why is it necessary to use spectroscopic, X-ray diffraction, and electron-diffraction techniques to measure bond lengths?

Options:
A Because these techniques are more accurate than other methods
B Because they allow for the measurement of bond lengths in gaseous samples
C Because they provide information about the bond's stability
D Because they provide detailed information about the arrangement of atoms in a molecule

The correct answer is:
Because they provide detailed information about the arrangement of atoms in a molecule

Solution:
These techniques are used because they provide detailed information about the arrangement of atoms in a molecule, which includes bond lengths.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Why is it not necessary to define all the properties of a system to completely define its state?

Options:
A Some properties are irrelevant
B Only a certain number of properties can be varied independently
C Thermodynamics only considers a subset of properties
D The surroundings determine the properties

The correct answer is:
Only a certain number of properties can be varied independently

Solution:
To completely define the state of a system, it's only necessary to define a certain number of properties that can be varied independently, as dictated by the nature of the system.

Topic: Chemistry, Thermodynamics (C), NEET
Why is it not possible to calculate lattice enthalpy directly from the interaction of attractive and repulsive forces alone?

Options:
A Because the forces of attraction are stronger than the forces of repulsion
B Because the forces of repulsion are stronger than the forces of attraction
C Because lattice enthalpy is a qualitative concept
D Because factors associated with crystal geometry have to be included

The correct answer is:
Because factors associated with crystal geometry have to be included

Solution:
It is not possible to calculate lattice enthalpy directly from the interaction of attractive and repulsive forces alone because factors associated with crystal geometry have to be included.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Why is it safer to use soap from the environmental point of view?

Options:
A Soaps are biodegradable while detergents are quite stable because of branching in the hydrocarbon chain hence cause water pollution.
B Soap is less effective at cleaning than chemical cleaners.
C Soap has a longer shelf life compared to other cleaning products.
D Soap is more expensive than chemical cleaners.

The correct answer is:
Soaps are biodegradable while detergents are quite stable because of branching in the hydrocarbon chain hence cause water pollution.

Solution:
Correct Option is : (A)
Soaps are biodegradable while detergents are quite stable because of branching in the hydrocarbon chain hence cause water pollution.

Topic: Chemistry, Chemistry in Everyday Life, NEET
Why is it unsatisfactory to review the chemistry of actinoids in terms of oxidation states?

Options:
A Actinoids have very few oxidation states.
B Actinoids do not exhibit any oxidation states.
C The distribution of oxidation states among actinoids is uneven and varies for different elements.
D The chemistry of actinoids is identical to that of lanthanoids.

The correct answer is:
The distribution of oxidation states among actinoids is uneven and varies for different elements.

Solution:
It is unsatisfactory to review the chemistry of actinoids in terms of oxidation states because the distribution of oxidation states among actinoids is uneven and varies for different elements.

Topic: Chemistry, d and f Block Elements, NEET
Why is it useful to study the nature of body cavity and coelom in the classification of animals?

Options:
A to classify the organisms for study
B as scientists do not have any work
C to decide the complexity of an organism at the organ level
D none of the above

The correct answer is:
to decide the complexity of an organism at the organ level

Solution:
Classification of the body cavity and coelom is important to decide the complexity of an organism at the organ level.

Topic: Biology, Animal Kingdom, NEET
Why is Ka 2 << Ka1 for H2SO4in water?

Options:
A Due to the higher electronegativity of oxygen compared to hydrogen.
B Due to the presence of multiple ionizable hydrogen atoms.
C Due to the strong electron-withdrawing effect of sulfur.
D Due to the high dipole moment of H2SO4.

The correct answer is:
Due to the presence of multiple ionizable hydrogen atoms.

Solution:
Correct Option is : (B)
Due to the presence of multiple ionizable hydrogen atoms.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
Why is knowledge of reaction mechanisms important for planning the synthesis of organic compounds?

Options:
A It helps identify the reagents
B It provides information on intermediates
C It assists in determining the reaction temperature
D It aids in strategy planning for synthesis

The correct answer is:
It aids in strategy planning for synthesis

Solution:
The knowledge of reaction mechanisms is helpful in planning a strategy for the synthesis of organic compounds.

Topic: Chemistry, General Organic Chemistry, NEET
Why is KO2(potassium superoxide) paramagnetic?

Options:
A KO2has unpaired electrons in its molecular orbital configuration.
B KO2has paired electrons in its molecular orbital configuration.
C KO2has no electrons in its molecular orbital configuration.
D KO2is a non-polar molecule.

The correct answer is:
KO2has unpaired electrons in its molecular orbital configuration.

Solution:
Correct Option is : (A)
KO2has unpaired electrons in its molecular orbital configuration.

Topic: Chemistry, s Block Elements, NEET
Why is lactose considered a reducing sugar?

Options:
A It contains an aldehyde group at C-1 of galactose.
B It contains an aldehyde group at C-4 of glucose.
C It contains a ketone group at C-2 of galactose.
D It contains a ketone group at C-3 of glucose.

The correct answer is:
It contains an aldehyde group at C-1 of galactose.

Solution:
Lactose may produce a free aldehyde group at C-1 of the glucose unit, making it a reducing sugar.

Topic: Chemistry, Biomolecules, NEET
Why is lead unaffected by water?

Options:
A It forms a protective oxide film
B It reacts vigorously with water
C It forms lead hydroxide
D It forms lead chloride

The correct answer is:
It forms a protective oxide film

Solution:
Lead is unaffected by water likely because it forms a protective oxide film.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
Why is Li2CO3decomposed at a lower temperature whereas Na2CO3at a higher temperature?

Options:
A Li2CO3has a stronger chemical bond than Na2CO3, making it more stable at lower temperatures.
B Li2CO3has a weaker chemical bond than Na2CO3, making it less stable at higher temperatures.
C The atomic radius of lithium is smaller than sodium, allowing for stronger bonds in Li2CO3.
D The atomic radius of lithium is larger than sodium, allowing for stronger bonds in Li2CO3.

The correct answer is:
The atomic radius of lithium is smaller than sodium, allowing for stronger bonds in Li2CO3.

Solution:
Correct Option is : (C)
The atomic radius of lithium is smaller than sodium, allowing for stronger bonds in Li2CO3.

Topic: Chemistry, s Block Elements, NEET
Why is LiF almost insoluble in water whereas LiCl is soluble not only in water but also in acetone?

Options:
A LiF forms a covalent lattice structure.
B LiCl undergoes ion-dipole interactions with water molecules.
C LiF has a higher lattice energy compared to LiCl.
D LiF has a lower enthalpy of solution in water.

The correct answer is:
LiF has a higher lattice energy compared to LiCl.

Solution:
Correct Option is : (C)
LiF has a higher lattice energy compared to LiCl.

Topic: Chemistry, s Block Elements, NEET