datavorous/entrance-exam-dataset huggingface dataset:
What is the reason for maize being resistant to maize stem borers?

Options:
A High sugar content
B High nitrogen content
C Low sugar and nitrogen content
D High aspartic acid and low nitrogen and sugar content

The correct answer is:
High aspartic acid and low nitrogen and sugar content

Solution:
High aspartic acid, low nitrogen and sugar content in maize leads to resistance to maize stem borers.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
What is the reason for moist soil grains being pulled together?

Options:
A Gravity
B Reduced surface area of the thin film of water
C Viscosity
D High density

The correct answer is:
Reduced surface area of the thin film of water

Solution:
Moist soil grains are pulled together because the surface area of the thin film of water is reduced.

Topic: Chemistry, States of Matter, NEET
What is the reason for more and more children in metro cities of India suffering from allergies and asthma?

Options:
A Lowered immunity due to modern-day lifestyle
B Sensitivity to the environment
C Antigen-sensitive lymphocytes
D Rheumatoid arthritis

The correct answer is:
Sensitivity to the environment

Solution:
Children in metropolitan areas have a sensitivity to the environment.

Topic: Biology, Human Health and Diseases, NEET
What is the reason for other elements in group 14 to exceed their covalence beyond 4?

Options:
A Presence of d orbital
B High ionization enthalpy
C Electron donation from ns2 electrons
D Formation of electron precise molecules

The correct answer is:
Presence of d orbital

Solution:
The other elements in the group can exceed their covalence beyond 4 because of the presence of d orbital in them.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
What is the reason for oxygen's superiority in stabilizing high oxidation states compared to fluorine?

Options:
A Higher lattice energy
B Higher bond enthalpy terms
C Formation of multiple bonds to metals
D All of the above

The correct answer is:
Formation of multiple bonds to metals

Solution:
Oxygen's superiority in stabilizing high oxidation states is due to its ability to form multiple bonds to metals.

Topic: Chemistry, d and f Block Elements, NEET
What is the reason for positioning our eyes at a short distance away from the eyepiece when viewing through a compound microscope, and how does this distance relate to the concept of the 'eye-ring'?

Options:
A It reduces glare and discomfort during microscopy.
B It allows for better focus adjustment.
C It ensures that all the light refracted by the objective is collected.
D It enhances the magnification of the microscope.

The correct answer is:
It ensures that all the light refracted by the objective is collected.

Solution:
Correct Option is : (C)
It ensures that all the light refracted by the objective is collected.

Topic: Chemistry, Ray Optics, NEET
What is the reason for the change in electronegativity along the group?

Options:
A Changes in atomic mass
B Discrepancies in atomic size
C Changes in the number of electrons
D Changes in nuclear charge

The correct answer is:
Discrepancies in atomic size

Solution:
The change in electronegativity along the group is due to discrepancies in atomic size.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
What is the reason for the comparatively high Eo value of Mn?

Options:
A The removal of an electron from the stable d10 configuration of Mn2+
B The stability of Mn3+ with a noble gas configuration
C The half-filled t2g level of Mn2+
D The removal of an electron from the d5 configuration of Mn2+

The correct answer is:
The removal of an electron from the d5 configuration of Mn2+

Solution:
The comparatively high Eo value for Mn shows that Mn2+(d5) is particularly stable.

Topic: Chemistry, d and f Block Elements, NEET
What is the reason for the comparatively low Eo value of V?

Options:
A The removal of an electron from the stable d10 configuration of V2+
B The stability of V3+ with a noble gas configuration
C The half-filled t2g level of V2+
D The removal of an electron from the d5 configuration of V2+

The correct answer is:
The half-filled t2g level of V2+

Solution:
The comparatively low Eo value for V is related to the stability of V2+ (half-filled t2g level).

Topic: Chemistry, d and f Block Elements, NEET
What is the reason for the decrease in viscosity as temperature rises in a liquid?

Options:
A Molecules lose kinetic energy
B Molecules gain intermolecular forces
C Molecules have low kinetic energy
D Molecules can overcome intermolecular forces

The correct answer is:
Molecules can overcome intermolecular forces

Solution:
The decrease in viscosity at high temperature is due to molecules having high kinetic energy, which allows them to overcome intermolecular forces and slip past one another.

Topic: Chemistry, States of Matter, NEET
What is the reason for the disappearance of dinosaurs from the earth?

Options:
A climatic changes
B evolution into birds
C Both A and B
D Unknown

The correct answer is:
Both A and B

Solution:
The reason for the disappearance of dinosaurs from the earth is not entirely clear, some say climatic changes killed them, some say most of them evolved into birds, the truth may live in between.

Topic: Biology, Evolution, NEET
What is the reason for the ease of separation of ortho and para isomers?

Options:
A They have similar melting points.
B They have a small difference in their melting points.
C They have a large difference in their melting points.
D They cannot be separated.

The correct answer is:
They have a large difference in their melting points.

Solution:
The ortho and para isomers can be easily separated due to a large difference in their melting points.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What is the reason for the Eo value of Ni being related to the highest negative ΔhydHo?

Options:
A Ni has a low Eo value.
B Ni has a high Eo value.
C Ni has a low ΔhydHo value.
D Ni has a high ΔhydHo value.

The correct answer is:
Ni has a high Eo value.

Solution:
The Eo value for Ni is related to the highest negative ΔhydHo, indicating that Ni has a high Eo value.

Topic: Chemistry, d and f Block Elements, NEET
What is the reason for the formation of embryoid from pollen grain in tissue culture-medium?

Options:
A Cellular totipotency
B Organogenesis
C Double fertilization
D Test tube culture

The correct answer is:
Cellular totipotency

Solution:
Cellular totipotency is the ability of a single cell to differentiate into all cell types and to organize them to give rise to an entire organism in a suitable culture medium with appropriate temperature and aeration. Spores and zygotes are some of the examples of totipotent cells.
Related Theory
In 1902, Professor Gottlieb Haberlandt, proposed the idea of Totipotency. He said that every living cell of the plant body can regenerate the entire plant body because it is obtained from the fertilized egg and contains genetic data.

Topic: Biology, Plant - Growth and Development, NEET, NEET 2002
What is the reason for the four-minute difference between a mean solar day and a sidereal day, resulting in distant stars rising four minutes early every successive day?

Options:
A The Earth's rotation speed fluctuates, causing variations in the time interval between two successive noon times.
B The Earth's orbit has a minor influence on the rotation speed, leading to a slight difference in the time it takes for the Sun to pass through the zenith point.
C The Earth's axial tilt contributes to the discrepancy between the time intervals of mean solar and sidereal days, resulting in a four-minute shift in the rising time of distant stars.
D Due to the Earth's orbital motion and the resulting change in the Sun's apparent position, the Earth requires an extra four minutes to complete a full rotation, leading to a difference between mean solar and sidereal days.

The correct answer is:
Due to the Earth's orbital motion and the resulting change in the Sun's apparent position, the Earth requires an extra four minutes to complete a full rotation, leading to a difference between mean solar and sidereal days.

Solution:
Correct Option is : (D)
Due to the Earth's orbital motion and the resulting change in the Sun's apparent position, the Earth requires an extra four minutes to complete a full rotation, leading to a difference between mean solar and sidereal days.

Topic: Chemistry, Gravitation, NEET
What is the reason for the high incidence of Marasmus in underdeveloped countries?

Options:
A Drought, famine and political turmoil
B Plenty of food supply and proper nutrition
C Lack of healthcare facilities
D Advancements in medical technology

The correct answer is:
Drought, famine and political turmoil

Solution:
In many underdeveloped countries of South and South-east Asia, South America, and West and Central Africa, dietary deficiencies of proteins and total food calories are widespread, and may affect large sections of the population during drought, famine and political turmoil. This increases the risk of developing Marasmus in the population.

Topic: Biology, Digestion and Absorption, NEET
What is the reason for the inability to represent the CO2–ion using a single Lewis structure, and how can it be most accurately represented?

Options:
A It has an odd number of valence electrons.
B Carbon prefers to form double bonds with oxygen.
C Resonance structures show the delocalization of electrons.
D CO32–ion cannot be represented in any way with Lewis structures.

The correct answer is:
Resonance structures show the delocalization of electrons.

Solution:
Correct Option is : (C)
Resonance structures show the delocalization of electrons.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What is the reason for the increased shielding as you move down a group in the periodic table?

Options:
A The outermost electrons are closer to the nucleus.
B The outermost electrons experience greater attraction to the nucleus.
C The inner core of electrons is more filled.
D The number of electrons in the outermost shell increases.

The correct answer is:
The inner core of electrons is more filled.

Solution:
The increased shielding occurs when the orbitals in the inner shells are completely filled, which happens in the case of alkali metals with a noble gas electronic configuration.

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
What is the reason for the increased tendency to exhibit a +2 oxidation state in heavier members of group 14?

Options:
A Presence of d orbital in valence shell
B High ionization enthalpy
C Electron donation from ns2 electrons
D Formation of electron precise molecules

The correct answer is:
Presence of d orbital in valence shell

Solution:
The increased tendency to show +2 oxidation state in heavier members is due to the inability of ns2 electrons of valence shell to participate in bonding, which is because of the presence of d orbitals in them.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
What is the reason for the instability of the phenyl cation in haloarenes?

Options:
A Lack of resonance stabilization
B Presence of resonance stabilization
C High electron density
D Low electron density

The correct answer is:
Lack of resonance stabilization

Solution:
The phenyl cation in haloarenes is unstable because it is not stabilized by resonance.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What is the reason for the irregular trend in the first ionization enthalpy of the metals of the 3d series?

Options:
A Changes in the number of s electrons
B Changes in the number of p electrons
C Alteration of relative energies of 4s and 3d orbitals
D Increase in the number of outer shell electrons

The correct answer is:
Alteration of relative energies of 4s and 3d orbitals

Solution:
The irregular trend in the first ionization enthalpy of the 3d series is due to the alteration of relative energies of 4s and 3d orbitals when one electron is removed.

Topic: Chemistry, d and f Block Elements, NEET
What is the reason for the large number of male gametes produced in sexual reproduction?

Options:
A To compensate the loss of male gametes during transport
B To increase the chances of fertilisation
C To form a new organism
D None of the above

The correct answer is:
To compensate the loss of male gametes during transport

Solution:
To compensate for the loss of male gametes during transport, the number of male gametes produced is several thousand times the number of female gametes produced.

Topic: Biology, Reproduction in Organisms, NEET
What is the reason for the lesser number of oxidation states at the extreme ends of the transition series?

Options:
A Too few electrons to lose or share
B Too many d electrons
C Too many s electrons
D Too many p electrons

The correct answer is:
Too few electrons to lose or share

Solution:
The lesser number of oxidation states at the extreme ends of the transition series stems from either too few electrons to lose or share.

Topic: Chemistry, d and f Block Elements, NEET
What is the reason for the limited availability of assisted reproductive technologies (ART) in India?

Options:
A Emotional and social factors
B Expensive instrumentation
C Lack of specialised professionals
D All of the above

The correct answer is:
All of the above

Solution:
The limited availability of assisted reproductive technologies (ART) in India is due to expensive instrumentation, emotional and social factors, and lack of specialised professionals.

Topic: Biology, Reproductive Health, NEET
What is the reason for the low Eo value of Sc?

Options:
A The removal of an electron from the stable d10 configuration of Sc3+
B The stability of Sc3+ with a noble gas configuration
C The half-filled t2g level of Sc2+
D The removal of an electron from the d5 configuration of Sc2+

The correct answer is:
The stability of Sc3+ with a noble gas configuration

Solution:
The low Eo value for Sc reflects the stability of Sc3+ which has a noble gas configuration.

Topic: Chemistry, d and f Block Elements, NEET
What is the reason for the lower ionization enthalpies of early actinoids compared to early lanthanoids?

Options:
A Differences in atomic number
B Differences in metallic radii
C Penetration of 5f orbitals
D Formation of protective oxide layers

The correct answer is:
Penetration of 5f orbitals

Solution:
It is evident from the behaviour of the actinoids that the ionisation enthalpies of the early actinoids, though not accurately known, but are lower than for the early lanthanoids. This is quite reasonable since it is to be expected that when 5f orbitals are beginning to be occupied, they will penetrate less into the inner core of electrons.

Topic: Chemistry, d and f Block Elements, NEET
What is the reason for the occurrence of oxidation states two units less than the group oxidation state in p-block elements?

Options:
A The inert pair effect
B The presence of d-orbitals
C Electronegativity differences
D Ionization energy

The correct answer is:
The inert pair effect

Solution:
The occurrence of oxidation states two units less than the group oxidation states is sometimes attributed to the 'inert pair effect.'

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
What is the reason for the puffed-up appearance of dough used for making foods such as dosa and idli?

Options:
A The production of acid
B The production of CO₂ gas
C The production of vitamins
D The growth of yeast

The correct answer is:
The production of CO₂ gas

Solution:
The puffed-up appearance of the dough is due to the production of CO₂ gas.

Topic: Biology, Microbes in Human Welfare, NEET
What is the reason for the rapid growth of population in the last century?

Options:
A Increased health facilities
B Better living conditions
C Increased number of people in reproducible age
D All of the above

The correct answer is:
All of the above

Solution:
A rapid decline in death rate, maternal mortality rate (MMR) and infant mortality rate (IMR) as well as an increase in number of people in reproducible age are probable reasons for the rapid growth of population in the last century.

Topic: Biology, Reproductive Health, NEET
What is the reason for the regular decrease in atomic radii known as Lanthanoid contraction?

Options:
A The filling of 4f before 5d orbital.
B The intervention of the 4f orbitals.
C The imperfect shielding of one electron by another in the same set of orbitals.
D The net electrostatic attraction between the nuclear charge and the outermost electron.

The correct answer is:
The filling of 4f before 5d orbital.

Solution:
Lanthanoid contraction is caused by the filling of 4f orbitals before 5d orbitals, resulting in a regular decrease in atomic radii.

Topic: Chemistry, d and f Block Elements, NEET
What is the reason for the regular decrease in the size of the entire 4f orbitals as the nuclear charge increases along the series?

Options:
A The decrease in metallic radius.
B The filling of 5d orbitals before 4f orbitals.
C The imperfect shielding of one 4f electron by another.
D The intervention of the 4f orbitals.

The correct answer is:
The imperfect shielding of one 4f electron by another.

Solution:
The regular decrease in the size of the entire 4f orbitals is due to the imperfect shielding of one 4f electron by another.

Topic: Chemistry, d and f Block Elements, NEET
What is the reason for the relatively small increase in covalent radius from arsenic (As) to bismuth (Bi)?

Options:
A Presence of completely filled d and/or f orbitals
B Reduced number of valence electrons
C Increased atomic mass
D High electronegativity

The correct answer is:
Presence of completely filled d and/or f orbitals

Solution:
The paragraph attributes the relatively small increase in covalent radius from As to Bi to the presence of completely filled d and/or f orbitals in heavier members.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What is the reason for the small increase in covalent radius from Si to Pb?

Options:
A The presence of completely filled d and f orbitals
B The absence of completely filled d and f orbitals
C The presence of completely filled s and p orbitals
D The increase in atomic number

The correct answer is:
The presence of completely filled d and f orbitals

Solution:
The small increase in radius from Si to Pb is due to the presence of completely filled d and f orbitals.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
What is the reason for the spread of HIV infection?

Options:
A Natural causes
B Unconscious behavior patterns
C Proper monitoring
D Ignorance

The correct answer is:
Unconscious behavior patterns

Solution:
The spread of HIV infection is due to conscious behavior patterns and not due to natural causes or poor monitoring.

Topic: Biology, Human Health and Diseases, NEET
What is the reason for the stability of the completely filled d10 configuration in Zn2+?

Options:
A It has a high Eo value.
B It has a low Eo value.
C It has a high ΔhydHo value.
D It has a low ΔhydHo value.

The correct answer is:
It has a high Eo value.

Solution:
The stability of the completely filled d10 configuration in Zn2+ is related to its high Eo value.

Topic: Chemistry, d and f Block Elements, NEET
What is the reason for the strong oxidizing nature of halogens?

Options:
A Their low ionization energy
B Their tendency to accept electrons
C Their high ionization energy
D Their ability to expand their octet

The correct answer is:
Their tendency to accept electrons

Solution:
The strong oxidizing nature of halogens is due to their tendency to accept electrons, making them excellent oxidizing agents.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What is the reason for the variation in boiling and melting points in Group 15?

Options:
A Different atomic sizes
B Change in electronic configuration
C Presence of allotropy
D Isotopic composition

The correct answer is:
Presence of allotropy

Solution:
The paragraph mentions that all the elements in Group 15, except nitrogen, show allotropy, which could contribute to the variation in boiling and melting points.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What is the reason for using restriction endonucleases as a tool for genetic engineering?

Options:
A They can degrade harmful proteins.
B They can cut DNA at specific base sequences.
C They can cut DNA at variable sites.
D They can join DNA fragments.

The correct answer is:
They can cut DNA at specific base sequences.

Solution:
An endonuclease is a biocatalyst protein that is able to identify a specific, short nucleotide sequence, and it makes cuts at that site of the DNA sequence. DNA sequencing pattern is the same in all organisms known to contain DNA as genetic material. Thus, these enzymes can act as a cutter for desired DNA sequence coding for a particular gene which then can be placed in the genome of the desired organism. The DNA fragments can be joined by enzyme DNA ligase. Restriction endonucleases do not act on protein; rather, they act on DNA.

Topic: Biology, Biotechnology - Principles and Processes, NEET
What is the reason p-Dichlorobenzene has higher m.p. than those of o- and m-isomers?

Options:
A p-Dichlorobenzene forms stronger hydrogen bonds than the other isomers.
B p-Dichlorobenzene has a more symmetrical molecular structure, resulting in stronger van der Waals forces and thus, higher mp than those of o- and m- isomers
C The para isomer has a larger molecular mass, leading to higher melting point.
D The ortho and meta isomers have more polarizable chlorine atoms, reducing their melting points.

The correct answer is:
p-Dichlorobenzene has a more symmetrical molecular structure, resulting in stronger van der Waals forces and thus, higher mp than those of o- and m- isomers

Solution:
Correct Option is : (B)
p-Dichlorobenzene has a more symmetrical molecular structure, resulting in stronger van der Waals forces and thus, higher mp than those of o- and m- isomers

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What is the reason that among the d4species, Cr2+is strongly reducing while manganese(III) is strongly oxidizing?

Options:
A Cr2+has a higher atomic number than Mn3+
B Mn3+has a higher ionization energy than Cr2+
C Mn3+has a completely filled d-orbital
D Cr2+is strongly reducing because it changes to t2g3configuration whereas Mn3+is strongly oxidizing because it changes to stable half-filled configuration

The correct answer is:
Cr2+is strongly reducing because it changes to t2g3configuration whereas Mn3+is strongly oxidizing because it changes to stable half-filled configuration

Solution:
Correct Option is : (D)
Cr2+is strongly reducing because it changes to t2g3configuration whereas Mn3+is strongly oxidizing because it changes to stable half-filled configuration

Topic: Chemistry, d and f Block Elements, NEET
What is the reason that Cobalt(II) is stable in aqueous solution but in the presence of complexing reagents it is easily oxidized?

Options:
A Although the 3rd ionization energy for Co is high, the higher amount of crystal field stabilization energy [CFSE] released in the presence of strong-field ligands overcomes this ionization energy.
B Complexing reagents decrease the stability of cobalt(II) ions.
C Cobalt(II) has a high ionization energy.
D Complexing reagents have a lower atomic number than cobalt(II).

The correct answer is:
Although the 3rd ionization energy for Co is high, the higher amount of crystal field stabilization energy [CFSE] released in the presence of strong-field ligands overcomes this ionization energy.

Solution:
Correct Option is : (A)
Although the 3rd ionization energy for Co is high, the higher amount of crystal field stabilization energy [CFSE] released in the presence of strong-field ligands overcomes this ionization energy.

Topic: Chemistry, d and f Block Elements, NEET