datavorous/entrance-exam-dataset huggingface dataset:
What happens when hydrostatic pressure in the sieve tube of phloem increases?

Options:
A Pressure flow decreases
B Pressure flow begins
C Pressure flow stops
D None of the above

The correct answer is:
Pressure flow begins

Solution:
When the hydrostatic pressure in the sieve tube of phloem increases, pressure flow begins.

Topic: Biology, Transport in Plants, NEET
What happens when ionic compounds are dissolved in water?

Options:
A They evaporate
B They dissociate into cations and anions
C They become nonionic
D They form covalent bonds

The correct answer is:
They dissociate into cations and anions

Solution:
The paragraph states that ionic compounds, when dissolved in water, dissociate into cations and anions.

Topic: Chemistry, Solutions, NEET
What happens when isotonic solutions are separated by a semipermeable membrane?

Options:
A Osmosis occurs between them
B No osmosis occurs between them
C Both solutions become hypertonic
D Both solutions become hypotonic

The correct answer is:
No osmosis occurs between them

Solution:
The paragraph mentions that when isotonic solutions are separated by a semipermeable membrane, no osmosis occurs between them.

Topic: Chemistry, Solutions, NEET
What happens when magnesium is burnt in air?

Options:
A Magnesium forms magnesium oxide (MgO).
B Magnesium reacts with nitrogen gas (N2).
C Magnesium forms magnesium chloride (MgCl2).
D Magnesium undergoes no chemical reaction with air.

The correct answer is:
Magnesium forms magnesium oxide (MgO).

Solution:
Correct Option is : (A)
Magnesium forms magnesium oxide (MgO).

Topic: Chemistry, s Block Elements, NEET
What happens when methyl bromide is treated with sodium in the presence of dry ether?

Options:
A Methane is formed
B Ethane is formed
C Propane is formed
D Ethanal is formed

The correct answer is:
Ethane is formed

Solution:
Correct Option is : (B)
Ethane is formed

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What happens when methyl chloride is treated with KCN?

Options:
A Methyl Cyanide gets formed
B Ethyl Cyanide gets formed
C Propyl Cyanide gets formed
D Butyl Cyanide gets formed

The correct answer is:
Methyl Cyanide gets formed

Solution:
Correct Option is : (A)
Methyl Cyanide gets formed

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What happens when migration of a section of population to another place and population occurs?

Options:
A Gene frequencies change in the original as well as in the new population
B Gene frequencies stay the same in both populations
C New genes/alleles are lost from both populations
D Mutation rate decreases in both populations

The correct answer is:
Gene frequencies change in the original as well as in the new population

Solution:
When migration of a section of population to another place and population occurs, gene frequencies change in the original as well as in the new population. New genes/alleles are added to the new population and these are lost from the old population.

Topic: Biology, Evolution, NEET
What happens when n-butyl chloride is treated with alcoholic KOH?

Options:
A But-2-ene is formed
B But-1-ene is formed
C But-2-yne is formed
D n-Butane is formed

The correct answer is:
But-1-ene is formed

Solution:
Correct Option is : (B)
But-1-ene is formed

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What happens when PCl5is heated?

Options:
A It decomposes into PCl3 and Cl2.
B It forms phosphoric acid (H3PO4).
C It reacts with water to form phosphoric acid.
D It forms white phosphorus (P4).

The correct answer is:
It decomposes into PCl3 and Cl2.

Solution:
Correct Option is : (A)
It decomposes into PCl3 and Cl2.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
What happens when PCl5 is heated?

Options:
A It sublimes
B It forms phosphorus pentachloride (PCl5)
C It decomposes into phosphorus trichloride (PCl3)
D It reacts with organic compounds

The correct answer is:
It sublimes

Solution:
The paragraph mentions that when heated, PCl5 sublimes but decomposes on stronger heating.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What happens when PCl5reacts with finely divided silver on heating and a white silver salt is obtained, which dissolves on adding excess aqueous NH3solution?

Options:
A Formation of [Ag(NH3)2]+Cl
B Formation of Ag2Cl2and subsequent dissolution in NH3
C Formation of [Ag(NH3)]+Cl
D Formation of AgCl2and subsequent dissolution in NH3

The correct answer is:
Formation of [Ag(NH3)2]+Cl

Solution:
Correct Option is : (A)
Formation of [Ag(NH3)2]+Cl

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What happens when phosphine comes into contact with traces of oxidizing agents like HNO3, Cl2, and Br2 vapors?

Options:
A It turns green
B It emits a rotten fish smell
C It becomes highly soluble in water
D It explodes

The correct answer is:
It explodes

Solution:
The paragraph mentions that phosphine explodes in contact with traces of oxidizing agents like HNO3, Cl2, and Br2 vapors.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What happens when Plasmodium enters the human body?

Options:
A The parasites attack the red blood cells (RBCs) resulting in their rupture
B The parasites multiply within the liver cells
C Both A) and B)
D None of the above

The correct answer is:
Both A) and B)

Solution:
When Plasmodium enters the human body, the parasites initially multiply within the liver cells and then attack the red blood cells (RBCs) resulting in their rupture.

Topic: Biology, Human Health and Diseases, NEET
What happens when pollen grains land on the stigma?

Options:
A They increase in viability
B They lose viability
C They become food supplements
D They bring about fertilisation

The correct answer is:
They bring about fertilisation

Solution:
When pollen grains are shed, they have to land on the stigma before they lose viability. If they land on the stigma, they bring about fertilisation.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
What happens when quicklime is heated with silica?

Options:
A Formation of calcium carbonate (CaCO3).
B Formation of calcium silicate (CaSiO3).
C Formation of calcium oxide (CaO) and silicon dioxide (SiO2).
D Formation of calcium sulfate (CaSO4).

The correct answer is:
Formation of calcium oxide (CaO) and silicon dioxide (SiO2).

Solution:
Correct Option is : (C)
Formation of calcium oxide (CaO) and silicon dioxide (SiO2).

Topic: Chemistry, s Block Elements, NEET
What happens when sand is stirred in water?

Options:
A Formation of a solution
B Formation of a colloid
C Formation of a suspension
D Formation of a precipitate

The correct answer is:
Formation of a suspension

Solution:
The paragraph mentions that sand in water, when stirred, gives a suspension that settles down with time.

Topic: Chemistry, Surface Chemistry, NEET
What happens when sodium chromate is acidified with sulfuric acid?

Options:
A It forms sodium dichromate
B It forms potassium dichromate
C It turns green
D It becomes less soluble

The correct answer is:
It forms sodium dichromate

Solution:
The yellow solution of sodium chromate is filtered and acidified with sulphuric acid to give a solution from which orange sodium dichromate, Na2Cr2O7. 2H2O can be crystallised.

Topic: Chemistry, d and f Block Elements, NEET
What happens when sodium fusion is carried out with excess sodium in the presence of sodium thiocyanate, as described in the paragraph?

Options:
A Sodium thiocyanate decomposes to yield cyanide and sulfate
B Sodium thiocyanate decomposes to yield cyanide and sulfide
C Sodium cyanide decomposes to yield thiocyanate and sulfate
D Sodium cyanide decomposes to yield thiocyanate and sulfide

The correct answer is:
Sodium thiocyanate decomposes to yield cyanide and sulfide

Solution:
When sodium fusion is carried out with excess sodium, sodium thiocyanate decomposes to yield cyanide and sulfide.

Topic: Chemistry, General Organic Chemistry, NEET
What happens when sodium metal is dropped in water?

Options:
A It forms sodium hydroxide and releases hydrogen gas.
B It forms sodium oxide and releases oxygen gas.
C It forms sodium chloride and releases chlorine gas.
D It forms sodium sulfate and releases sulfur dioxide gas.

The correct answer is:
It forms sodium hydroxide and releases hydrogen gas.

Solution:
Correct Option is : (A)
It forms sodium hydroxide and releases hydrogen gas.

Topic: Chemistry, s Block Elements, NEET
What happens when sodium metal is heated in free supply of air?

Options:
A It forms sodium oxide.
B It forms sodium peroxide.
C It forms sodium hydroxide.
D It forms sodium chloride.

The correct answer is:
It forms sodium oxide.

Solution:
Correct Option is : (A)
It forms sodium oxide.

Topic: Chemistry, s Block Elements, NEET
What happens when sodium peroxide dissolves in water?

Options:
A It forms sodium hydroxide and releases oxygen gas.
B It forms sodium oxide and releases hydrogen gas.
C It forms sodium chloride and releases chlorine gas.
D It forms sodium sulfate and releases sulfur dioxide gas.

The correct answer is:
It forms sodium hydroxide and releases oxygen gas.

Solution:
Correct Option is : (A)
It forms sodium hydroxide and releases oxygen gas.

Topic: Chemistry, s Block Elements, NEET
What happens when some constituent particles occupy an interstitial site in a crystal?

Options:
A The crystal becomes less dense.
B The crystal becomes more electrically conductive.
C The crystal becomes less stable.
D The crystal becomes more dense.

The correct answer is:
The crystal becomes more dense.

Solution:
When some constituent particles occupy an interstitial site in a crystal, the crystal becomes more dense.

Topic: Chemistry, Solid State, NEET
What happens when sulfur dioxide is passed through an aqueous solution of Fe(III) salt?

Options:
A Formation of a green precipitate.
B Formation of a reddish-brown precipitate.
C No reaction occurs.
D Formation of a white precipitate.

The correct answer is:
Formation of a reddish-brown precipitate.

Solution:
Correct Option is : (B)
Formation of a reddish-brown precipitate.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
What happens when sunlight returns to the Antarctic in the spring with respect to the polar stratospheric clouds?

Options:
A The clouds disappear completely.
B The clouds become denser.
C The clouds release chlorine radicals.
D The clouds release oxygen atoms.

The correct answer is:
The clouds disappear completely.

Solution:
When sunlight returns to the Antarctic in the spring, the sun's warmth breaks up the polar stratospheric clouds, causing them to disappear.

Topic: Chemistry, Environmental Chemistry, NEET
What happens when the atomic orbitals of carbon overlap with the 1s orbitals of hydrogen in CH4?

Options:
A Release of energy
B Formation of carbon-carbon bonds
C Formation of carbon-hydrogen bonds
D Formation of carbon-oxygen bonds

The correct answer is:
Formation of carbon-hydrogen bonds

Solution:
The overlap between the atomic orbitals of carbon and the 1s orbitals of hydrogen results in the formation of four C-H bonds.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What happens when the bond formed between an enzyme and an inhibitor is a strong covalent bond?

Options:
A The inhibitor can be easily displaced from the enzyme's active site by substrate molecules.
B If a strong covalent bond is formed between the enzyme and the inhibitor which cannot be broken easily, then the enzyme is blocked permanently.
C The enzyme undergoes a conformational change to accommodate the inhibitor, allowing both to function together.
D The inhibitor enhances the enzyme's catalytic activity.

The correct answer is:
If a strong covalent bond is formed between the enzyme and the inhibitor which cannot be broken easily, then the enzyme is blocked permanently.

Solution:
Correct Option is : (B)
If a strong covalent bond is formed between the enzyme and the inhibitor which cannot be broken easily, then the enzyme is blocked permanently.

Topic: Chemistry, Chemistry in Everyday Life, NEET
What happens when the concentration of soluble impurities in colloidal solutions is reduced to a requisite minimum?

Options:
A Increased stability
B Enhanced coagulation
C Improved clarity
D Decreased viscosity

The correct answer is:
Increased stability

Solution:
When the concentration of soluble impurities in colloidal solutions is reduced to a requisite minimum, it leads to increased stability.

Topic: Chemistry, Surface Chemistry, NEET
What happens when the delicate proportion of carbon dioxide in the atmosphere is exceeded?

Options:
A It causes ozone depletion
B It leads to volcanic eruptions
C It disturbs the natural greenhouse balance
D It promotes forest growth

The correct answer is:
It disturbs the natural greenhouse balance

Solution:
When the proportion of carbon dioxide in the atmosphere exceeds a delicate balance, it disturbs the natural greenhouse effect.

Topic: Chemistry, Environmental Chemistry, NEET
What happens when the factors of charge and solvation are removed from a lyophilic sol?

Options:
A Precipitation occurs
B Dispersion increases
C Coagulation takes place
D Stability decreases

The correct answer is:
Coagulation takes place

Solution:
The paragraph mentions that when the factors of charge and solvation are removed, a lyophilic sol can be coagulated.

Topic: Chemistry, Surface Chemistry, NEET
What happens when the intra-pulmonary pressure is equal to atmospheric pressure?

Options:
A Inspiration occurs
B Expiration occurs
C Breathing stops
D None of the above

The correct answer is:
None of the above

Solution:
When the intra-pulmonary pressure is equal to atmospheric pressure, neither inspiration nor expiration occurs.

Topic: Biology, Breathing and Exchange of Gases, NEET
What happens when the intrapulmonary pressure is less than atmospheric pressure?

Options:
A Inspiration
B Expiration
C Emphysema
D Forceful expiration

The correct answer is:
Inspiration

Solution:
Intrapleural pressure is the pressure of the air within the pleural cavity, between the visceral and parietal pleurae.
Air flows into the lungs largely due to a difference in pressure; atmospheric pressure is greater than intra-alveolar pressure, and intra-alveolar pressure is greater than intrapleural pressure. Air flows out of the lungs during expiration based on the same principle; pressure within the lungs becomes greater than the atmospheric pressure.

Topic: Biology, Breathing and Exchange of Gases, NEET
What happens when the male and female gametes fuse in sexual reproduction?

Options:
A They form a new organism
B They form a zygote
C They form a new plant
D They form a new animal

The correct answer is:
They form a zygote

Solution:
In sexual reproduction, the fusion of male and female gametes results in the formation of a zygote which develops to form a new organism.

Topic: Biology, Reproduction in Organisms, NEET
What happens when the mixture of gaseous products containing oxygen is passed over red-hot coke?

Options:
A Oxygen is converted to carbon monoxide
B Oxygen is converted to carbon dioxide
C Carbon is converted to carbon dioxide
D Nitrogen is released

The correct answer is:
Oxygen is converted to carbon monoxide

Solution:
When the mixture of gaseous products containing oxygen is passed over red-hot coke, "all the oxygen is converted to carbon monoxide."

Topic: Chemistry, General Organic Chemistry, NEET
What happens when the mother has a second pregnancy or childbirth when the older infant is still too young?

Options:
A The older infant will develop Marasmus
B The younger infant will develop Marasmus
C Both the older and younger infants will develop Marasmus
D Neither of the infants will develop Marasmus

The correct answer is:
The older infant will develop Marasmus

Solution:
If the mother has a second pregnancy or childbirth when the older infant is still too young and the older infant's milk is replaced too early by other foods which are poor in both proteins and caloric value, the older infant is at risk of developing Marasmus.

Topic: Biology, Digestion and Absorption, NEET
What happens when the nitrite ion links through oxygen in a nucleophilic reaction?

Options:
A Formation of alkyl nitrites
B Formation of isocyanides
C Formation of nitroalkanes
D Formation of alkyl cyanides

The correct answer is:
Formation of alkyl nitrites

Solution:
When the nitrite ion links through oxygen, it results in the formation of alkyl nitrites.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What happens when the nodes come in contact with damp soil or water?

Options:
A They produce spores
B They produce pseudopodia
C They produce roots and new plants
D They produce spores and pseudopodia

The correct answer is:
They produce roots and new plants

Solution:
When the nodes come in contact with damp soil or water, they produce roots and new plants.

Topic: Biology, Reproduction in Organisms, NEET
What happens when the pH of rainwater drops below 5.6?

Options:
A It becomes more alkaline.
B It becomes neutral.
C It is called acid rain.
D It becomes a base.

The correct answer is:
It is called acid rain.

Solution:
When the pH of rainwater drops below 5.6, it is referred to as acid rain.

Topic: Chemistry, Environmental Chemistry, NEET
What happens when the processes of dissolution and crystallization occur at the same rate in a solution?

Options:
A The solution becomes supersaturated.
B The solution becomes concentrated.
C A dynamic equilibrium is reached.
D The solution becomes saturated.

The correct answer is:
A dynamic equilibrium is reached.

Solution:
The paragraph states that when dissolution and crystallization occur at the same rate, a state of dynamic equilibrium is reached in the solution.

Topic: Chemistry, Solutions, NEET
What happens when the sexual forms of deuteromycetes are discovered?

Options:
A They are moved into classes they rightly belong to
B They are placed under deuteromycetes
C They are placed under another class
D None of the above

The correct answer is:
They are moved into classes they rightly belong to

Solution:
When the sexual forms of these fungi were discovered they were moved into classes they rightly belong to.

Topic: Biology, Biological Classification, NEET
What happens when the shoot tips of a plant are removed (decapitateC)?

Options:
A Growth of lateral buds is inhibited
B Abscission of mature leaves and fruits is promoted
C Growth of lateral buds is promoted
D Rooting in stem cuttings is initiated

The correct answer is:
Growth of lateral buds is promoted

Solution:
Removal of shoot tips (decapitation) usually results in the growth of lateral buds.

Topic: Biology, Plant - Growth and Development, NEET
What happens when there is an excess of manganese in plants?

Options:
A The uptake of iron and magnesium is increased
B The uptake of iron and magnesium is decreased
C The uptake of iron and magnesium is not affected
D There is no information about the effect of excess manganese

The correct answer is:
The uptake of iron and magnesium is decreased

Solution:
Manganese competes with iron and magnesium for uptake and with magnesium for binding with enzymes, so an excess of manganese may inhibit the uptake of iron and magnesium.

Topic: Biology, Mineral Nutrition, NEET
What happens when there is muscular fatigue?

Options:
A More ATP, more glycogen and more lactic acid.
B Little ATP, little glycogen and more lactic acid.
C Little ATP, little glycogen and little lactic acid.
D More ATP, no glycogen, no lactic acid.

The correct answer is:
Little ATP, little glycogen and more lactic acid.

Solution:
At the time of heavy muscular activity, the muscle does not get sufficient oxygen; hence it performs anaerobic respiration and produces lactic acid. This lactic acid accumulates in between the muscles and causes pain. Hence, there is a reduction in the contraction ability of the muscles. The reduction in the force of contraction of a muscle after prolonged stimulation is called 'muscle fatigue'. The glucose level will be lesser and hence the amount of ATP produced will be lesser.

Topic: Biology, Locomotion and Movement, NEET
What happens when two haploid hyphae of compatible mating types come together in case of Aspergillus , Claviceps and Neurospora?

Options:
A Diploid cells are formed immediately
B Dikaryotic stage occurs
C Fruiting bodies are formed
D Reduction division occurs

The correct answer is:
Dikaryotic stage occurs

Solution:
In some fungi, the fusion of two haploid cells immediately results in diploid cells (2n). However, in other fungi (ascomycetes and basidiomycetes), an intervening dikaryotic stage (n + n, i.e., two nuclei per cell) occurs since Aspergillus , Claviceps and Neurospora are few examples of fungi belonging to Ascomycetes, Dikaryotic stage would be seen in them.

Topic: Biology, Biological Classification, NEET
What happens when two hydrogen atoms are at a large distance from each other?

Options:
A They repel each other
B They attract each other
C There is no interaction between them
D They form a chemical bond

The correct answer is:
There is no interaction between them

Solution:
When the two hydrogen atoms are at a large distance from each other, there is no interaction between them.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What happens when vicinal dihalides are treated with alcoholic potassium hydroxide?

Options:
A Hydrogen halides are added
B Hydrogen halides are eliminated
C Alkane is formed
D Alkyl halide is formed

The correct answer is:
Hydrogen halides are eliminated

Solution:
When vicinal dihalides are treated with alcoholic potassium hydroxide, hydrogen halides are eliminated through dehydrohalogenation.

Topic: Chemistry, Hydrocarbons, NEET
What happens when white phosphorus is heated with concentrated NaOH solution in an inert atmosphere of CO2?

Options:
A Phosphine gas (PH3) is formed.
B Sodium hypophosphite (NaH2PO,) is formed.
C Phosphoric acid (H3PO4) is formed.
D Sodium phosphate (Na3PO,) is formed.

The correct answer is:
Sodium hypophosphite (NaH2PO,) is formed.

Solution:
Correct Option is : (B)
Sodium hypophosphite (NaH2PO,) is formed.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
What has been done to increase the efficiency of fuel cells?

Options:
A Using fossil fuels as reactants
B Developing new electrode materials and better catalysts
C Increasing the concentration of oxygen in the cell
D Adding more water to the electrolyte compartment

The correct answer is:
Developing new electrode materials and better catalysts

Solution:
TThere has been tremendous progress in the development of new electrode materials, better catalysts, and electrolytes for increasing the efficiency of fuel cells.

Topic: Chemistry, Electrochemistry, NEET
What has been possible in recent years in the study of pollen-pistil interaction?

Options:
A The identification of some of the pollen and pistil components
B The storage of pollen for artificial insemination
C The use of pollen as food supplements
D The use of pollen banks in crop breeding programmes

The correct answer is:
The identification of some of the pollen and pistil components

Solution:
It is only in recent years that botanists have been able to identify some of the pollen and pistil components and the interactions leading to the recognition, followed by acceptance or rejection.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
What has been the increase in Earth's temperature in the past century?

Options:
A 0.6 ⁰C
B 1.0 ⁰C
C 2.0 ⁰C
D 3.0 ⁰C

The correct answer is:
0.6 ⁰C

Solution:
The temperature of the Earth has increased by 0.6 ⁰C in the past century, most of it during the last three decades.

Topic: Biology, Environmental Issues, NEET
What has the use of vaccines and immunization programs enabled us to do with smallpox?

Options:
A Control it to a large extent
B Eradicate it completely
C Effectively treat it
D Worsen it

The correct answer is:
Eradicate it completely

Solution:
The advancements made in biological science have armed us to effectively deal with many infectious diseases and the use of vaccines and immunization programs have enabled us to completely eradicate a deadly disease like smallpox.

Topic: Biology, Human Health and Diseases, NEET