datavorous/entrance-exam-dataset huggingface dataset:
What happens when a haloalkane with a β-hydrogen atom is heated with an alcoholic solution of potassium hydroxide?

Options:
A Formation of a halogen atom
B Elimination of a halogen atom
C Formation of an alkane
D Elimination of a hydrogen atom

The correct answer is:
Elimination of a halogen atom

Solution:
When a haloalkane with a β-hydrogen atom is heated with alcoholic potassium hydroxide, there is the elimination of a hydrogen atom from the β-carbon and a halogen atom from the α-carbon.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What happens when a high voltage is applied across the electrodes of the cathode ray tube?

Options:
A The tube becomes brighter
B The tube becomes darker
C Current starts flowing from cathode to anode
D Current starts flowing from anode to cathode

The correct answer is:
Current starts flowing from cathode to anode

Solution:
When a sufficiently high voltage is applied across the electrodes, current starts flowing from cathode to anode.

Topic: Chemistry, Structure of Atom, NEET
What happens when a hormone binds to its receptor?

Options:
A No changes occur in the target tissue
B Target tissue metabolism and hence physiological functions are regulated
C The hormone is destroyed
D The receptor is destroyed

The correct answer is:
Target tissue metabolism and hence physiological functions are regulated

Solution:
Hormone-Receptor complex formation leads to certain biochemical changes in the target tissue. Target tissue metabolism and hence physiological functions are regulated by hormones.

Topic: Biology, Chemical Coordination and Integration, NEET
What happens when a host fish species becomes extinct?

Options:
A Its unique assemblage of parasites becomes extinct
B Its associated plant species become extinct
C Its associated animal species become extinct
D None of the above

The correct answer is:
Its unique assemblage of parasites becomes extinct

Solution:
When a species becomes extinct, the plant and animal species associated with it in an obligatory way also become extinct. When a host fish species becomes extinct, its unique assemblage of parasites also meets the same fate.

Topic: Biology, Biodiversity and its Conservation, NEET
What happens when a lead storage battery is charged?

Options:
A PbSO4(s) on anode and cathode is converted into Pb and PbO2, respectively.
B Pb and PbO2 are converted into PbSO4 on anode and cathode.
C The battery loses its capacity.
D None of the above

The correct answer is:
PbSO4(s) on anode and cathode is converted into Pb and PbO2, respectively.

Solution:
When a lead storage battery is charged, the reaction is reversed, and PbSO4(s) on the anode and cathode is converted into Pb and PbO2, respectively.

Topic: Chemistry, Electrochemistry, NEET
What happens when a neural signal reaches the neuromuscular junction?

Options:
A Calcium ions are released into the sarcoplasm
B Cross-bridge formation between actin and myosin
C Release of neurotransmitter acetyl choline
D Relaxation of the muscle

The correct answer is:
Release of neurotransmitter acetyl choline

Solution:
When a neural signal reaches the neuromuscular junction, it releases a neurotransmitter (Acetylcholine) which generates an action potential in the sarcolemma.

Topic: Biology, Locomotion and Movement, NEET
What happens when a solution of freshly prepared diazonium salt is mixed with cuprous chloride or cuprous bromide?

Options:
A The diazonium group is replaced by -Cl or -Br.
B The diazonium salt is converted to a primary aliphatic amine.
C The diazonium salt is oxidized.
D The diazonium salt forms an aromatic amine.

The correct answer is:
The diazonium group is replaced by -Cl or -Br.

Solution:
Mixing the solution of freshly prepared diazonium salt with cuprous chloride or cuprous bromide results in the replacement of the diazonium group by -Cl or -Br.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What happens when amines react with acids?

Options:
A They form water.
B They form salts.
C They undergo oxidation.
D They become less basic.

The correct answer is:
They form salts.

Solution:
Amines react with acids to form salts through protonation of the nitrogen atom.

Topic: Chemistry, Amines, NEET
What happens when an allele produces a non:functional enzyme?

Options:
A The phenotype will be dependent on the functioning of the modified allele
B The phenotype will be dependent on the functioning of the unmodified allele
C The phenotype will not be affected by the functionality of either allele
D The phenotype will be a combination of both alleles

The correct answer is:
The phenotype will be dependent on the functioning of the unmodified allele

Solution:
When an allele produces a non:functional enzyme, the phenotype will only be dependent on the functioning of the unmodified (dominant) allele.

Topic: Biology, Principles of Inheritance and Variation, NEET
What happens when an electric discharge is passed through gaseous hydrogen?

Options:
A Hydrogen atoms combine to form H2 molecules
B H2 molecules dissociate into hydrogen atoms
C Hydrogen atoms combine to form helium atoms
D Hydrogen ions are formed

The correct answer is:
H2 molecules dissociate into hydrogen atoms

Solution:
When an electric discharge is passed through gaseous hydrogen, the H2 molecules dissociate into energetically excited hydrogen atoms

Topic: Chemistry, Structure of Atom, NEET
What happens when an electric field is applied to a colloidal solution?

Options:
A The colloidal particles coagulate.
B The colloidal particles undergo Brownian motion.
C The colloidal particles disintegrate.
D The colloidal particles become positively charged.

The correct answer is:
The colloidal particles coagulate.

Solution:
Correct Option is : (A)
The colloidal particles coagulate.

Topic: Chemistry, Surface Chemistry, NEET
What happens when an electric field is established throughout a circuit, almost instantly (with the speed of light)?

Options:
A Electrons immediately travel from one end of the conductor to the other.
B A local electron drift occurs at every point in the circuit.
C The current instantly reaches its steady value.
D Electrons do not move within the circuit.

The correct answer is:
A local electron drift occurs at every point in the circuit.

Solution:
Correct Option is : (B)
A local electron drift occurs at every point in the circuit.

Topic: Chemistry, Current Electricity, NEET
What happens when an electrolyte, NaCl is added to hydrated ferric oxide sol?

Options:
A The sol becomes more stable.
B Coagulation occurs The particles aggregate and settle down.
C The sol turns a different color.
D The sol becomes denser.

The correct answer is:
Coagulation occurs The particles aggregate and settle down.

Solution:
Correct Option is : (B)
Coagulation occurs The particles aggregate and settle down.

Topic: Chemistry, Surface Chemistry, NEET
What happens when an electron from a neighboring atom fills the electron hole in a p-type semiconductor?

Options:
A It creates a new electron hole in the original position.
B It creates a positively charged ion.
C It forms a covalent bond with the neighboring atom.
D It becomes a free electron.

The correct answer is:
It creates a new electron hole in the original position.

Solution:
When an electron fills the electron hole in a p-type semiconductor, it creates a new electron hole in the original position.

Topic: Chemistry, Solid State, NEET
What happens when an electron is lost from a hydrogen atom?

Options:
A It results in the formation of H2.
B It results in the formation of a hydrogen ion (H+).
C It results in the formation of a helium atom (He).
D It results in the formation of a halogen atom.

The correct answer is:
It results in the formation of a hydrogen ion (H+).

Solution:
When an electron is lost from a hydrogen atom, it results in the formation of a hydrogen ion (H+).

Topic: Chemistry, Hydrogen, NEET
What happens when an external potential opposing the cell potential is applied to a galvanic cell, and the opposing voltage reaches 1.1 V?

Options:
A The reaction continues in the same direction.
B The reaction stops, and no current flows through the cell.
C The cell becomes an electrolytic cell.
D The cell potential decreases.

The correct answer is:
The reaction stops, and no current flows through the cell.

Solution:
If an external opposite potential is applied in the galvanic cell and increased slowly, we find that the reaction continues to take place till the opposing voltage reaches the value 1.1 V when, the reaction stops altogether and no current flows through the cell.

Topic: Chemistry, Electrochemistry, NEET
What happens when an Rh negative person is exposed to Rh positive blood?

Options:
A They become Rh positive.
B They form specific antibodies against the Rh antigens.
C They become Rh negative.
D They don't form any antibodies.

The correct answer is:
They form specific antibodies against the Rh antigens.

Solution:
When an Rh negative person is exposed to Rh positive blood, they form specific antibodies against the Rh antigens.

Topic: Biology, Body Fluids and Circulation, NEET
What happens when attractive van der Waals forces pull particles together in the absence of a double layer?

Options:
A Precipitation
B Neutralization
C Repulsion
D Stabilization

The correct answer is:
Precipitation

Solution:
The paragraph states that when particles lack a double layer and attractive van der Waals forces pull them together, they can come close enough, leading to precipitation.

Topic: Chemistry, Surface Chemistry, NEET
What happens when BF₃ is reacted with ammonia?

Options:
A BF₃ forms a Lewis acid-base complex with ammonia.
B BF₃ forms a covalent compound with ammonia.
C BF₃ reacts with ammonia to form ammonium fluoride.
D BF₃ reacts with ammonia to form boron trifluoride-ammonia complex.

The correct answer is:
BF₃ reacts with ammonia to form boron trifluoride-ammonia complex.

Solution:
Correct Option is : (D)
BF₃ reacts with ammonia to form boron trifluoride-ammonia complex.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What happens when boiling water reacts with actinoid metals?

Options:
A It produces a mixture of oxide and hydride
B It produces a mixture of oxide and nitrate
C It produces a mixture of oxide and chloride
D It produces a mixture of oxide and sulfide

The correct answer is:
It produces a mixture of oxide and hydride

Solution:
The action of boiling water on them, for example, gives a mixture of oxide and hydride.

Topic: Chemistry, d and f Block Elements, NEET
What happens when boiling water reacts with actinoid metals?

Options:
A It produces a mixture of oxide and hydride
B It produces a mixture of oxide and nitrate
C It produces a mixture of oxide and chloride
D It produces a mixture of oxide and sulfide

The correct answer is:
It produces a mixture of oxide and hydride

Solution:
The action of boiling water on them gives a mixture of oxide and hydride.

Topic: Chemistry, d and f Block Elements, NEET
What happens when boranes are hydrolyzed by water?

Options:
A They form borax
B They produce hydrogen gas
C They give boric acid
D They release oxygen gas

The correct answer is:
They give boric acid

Solution:
Boranes are readily hydrolyzed by water to give boric acid.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
What happens when borax dissolves in water?

Options:
A It forms a neutral solution
B It forms an acidic solution
C It forms an alkaline solution
D It does not dissolve in water

The correct answer is:
It forms an alkaline solution

Solution:
Borax dissolves in water to give an alkaline solution.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
What happens when bromobenzene is treated with Mg in the presence of dry ether?

Options:
A Phenylmagnesium bromide is formed
B Phenylmagnesium chloride is formed
C Benzylic magnesium bromide is formed
D Phenylpotassium bromide is formed

The correct answer is:
Phenylmagnesium bromide is formed

Solution:
Correct Option is : (A)
Phenylmagnesium bromide is formed

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What happens when calcium nitrate is heated?

Options:
A Formation of calcium oxide (CaO) and nitrogen dioxide (NO2).
B Formation of calcium chloride (CaCl2) and water (H2O).
C Formation of calcium carbonate (CaCO3).
D Formation of calcium sulfate (CaSO4) and oxygen (O2).

The correct answer is:
Formation of calcium oxide (CaO) and nitrogen dioxide (NO2).

Solution:
Correct Option is : (A)
Formation of calcium oxide (CaO) and nitrogen dioxide (NO2).

Topic: Chemistry, s Block Elements, NEET
What happens when Calgon (sodium hexametaphosphate) is added to hard water?

Options:
A It increases the hardness of the water.
B It has no effect on the water hardness.
C It reacts with hardness ions to form soluble complexes.
D It precipitates hardness ions as insoluble compounds.

The correct answer is:
It reacts with hardness ions to form soluble complexes.

Solution:
Calgon (sodium hexametaphosphate) reacts with hardness ions in hard water to form soluble complexes, preventing the precipitation of hardness ions.

Topic: Chemistry, Hydrogen, NEET
What happens when carbon monoxide is reacted with steam in the presence of iron chromate as a catalyst?

Options:
A Production of carbon dioxide
B Production of methane gas
C Production of dihydrogen
D Production of sodium arsenite

The correct answer is:
Production of dihydrogen

Solution:
Reacting carbon monoxide with steam in the presence of iron chromate as a catalyst results in the production of dihydrogen.

Topic: Chemistry, Hydrogen, NEET
What happens when carbon tetrachloride is released into the air?

Options:
A It condenses and falls to the ground
B It depletes the ozone layer
C It enhances air quality
D It reduces ultraviolet radiation

The correct answer is:
It depletes the ozone layer

Solution:
Carbon tetrachloride, when released into the air, rises to the atmosphere and depletes the ozone layer.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What happens when carboxylic acids are dissolved in water?

Options:
A They form covalent bonds.
B They dissociate to form carboxylate anions and hydronium ions.
C They react with metals.
D They evaporate.

The correct answer is:
They dissociate to form carboxylate anions and hydronium ions.

Solution:
They dissociate to form carboxylate anions and hydronium ions.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What happens when cathode rays strike the zinc sulfide coating in the cathode ray tube?

Options:
A They produce a dark spot
B They create a vacuum
C They generate a bright spot
D They stop moving

The correct answer is:
They generate a bright spot

Solution:
When cathode rays strike the zinc sulfide coating, a bright spot is developed on the coating.

Topic: Chemistry, Structure of Atom, NEET
What happens when chlorine reacts with slaked lime?

Options:
A Formation of calcium chloride (CaCl2).
B Formation of calcium oxide (CaO) and water (H2O).
C Formation of calcium hypochlorite (Ca(ClO)2).
D Formation of calcium nitrate (Ca(NO3)2).

The correct answer is:
Formation of calcium chloride (CaCl2).

Solution:
Correct Option is : (A)
Formation of calcium chloride (CaCl2).

Topic: Chemistry, s Block Elements, NEET
What happens when chlorobenzene is subjected to hydrolysis?

Options:
A Benzoic acid
B Benzanal is formed
C Phenol is formed
D Anniline is formed

The correct answer is:
Phenol is formed

Solution:
Correct Option is : (C)
Phenol is formed

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What happens when compounds with the -OH functional group react with sodium metal?

Options:
A They release oxygen gas
B They release hydrogen gas
C They form new compounds with sodium
D They become highly explosive

The correct answer is:
They release hydrogen gas

Solution:
The paragraph mentions that compounds with the -OH functional group liberate hydrogen on reaction with sodium metal.

Topic: Chemistry, General Organic Chemistry, NEET
What happens when concentrated H2SO4is added to calcium fluoride?

Options:
A Calcium sulphate and hydrofluoric acid are formed.
B Calcium sulphate and hydrogen fluoride are formed.
C Calcium sulphate and hydrochloric acid are formed.
D Calcium sulphate and hydrofluoric acid are formed.

The correct answer is:
Calcium sulphate and hydrofluoric acid are formed.

Solution:
Correct Option is : (A)
Calcium sulphate and hydrofluoric acid are formed.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
What happens when cut by the same restriction enzyme?

Options:
A The resultant DNA fragments have different sticky ends
B The resultant DNA fragments have the same kind of sticky ends
C The resultant DNA fragments do not have any sticky ends
D None of the above

The correct answer is:
The resultant DNA fragments have the same kind of sticky ends

Solution:
When cut by the same restriction enzyme, the resultant DNA fragments have the same kind of sticky ends.

Topic: Biology, Biotechnology - Principles and Processes, NEET
What happens when D-glucose is treated with Bromine Water?

Options:
A D-glucose is converted into L-glucose.
B D-glucose forms a cyclic structure.
C D-glucose undergoes bromination, leading to the formation of brominated glucose derivatives.
D D-glucose gets oxidized to six carbon carboxylic acid (gluconic acid)

The correct answer is:
D-glucose gets oxidized to six carbon carboxylic acid (gluconic acid)

Solution:
Correct Option is : (D)
D-glucose gets oxidized to six carbon carboxylic acid (gluconic acid)

Topic: Chemistry, Biomolecules, NEET
What happens when D-glucose is treated with HI?

Options:
A D-glucose is converted into L-glucose.
B D-glucose forms a cyclic structure.
C D-glucose undergoes dehydration to form an alkene.
D D-glucose is completely reduced to n-hexane.

The correct answer is:
D-glucose is completely reduced to n-hexane.

Solution:
Correct Option is : (D)
D-glucose is completely reduced to n-hexane.

Topic: Chemistry, Biomolecules, NEET
What happens when D-glucose is treated with HNO3?

Options:
A D-glucose is converted into L-glucose.
B D-glucose forms a cyclic structure.
C On oxidation with nitric acid, D-glucose yields a dicarboxylic acid called saccharic acid
D D-glucose is oxidized to form gluconic acid.

The correct answer is:
On oxidation with nitric acid, D-glucose yields a dicarboxylic acid called saccharic acid

Solution:
Correct Option is : (C)
On oxidation with nitric acid, D-glucose yields a dicarboxylic acid called saccharic acid

Topic: Chemistry, Biomolecules, NEET
What happens when dialysis is prolonged?

Options:
A Larger colloidal particles are completely removed.
B Smaller colloidal particles are completely removed.
C Colloidal particles start to precipitate.
D Colloidal particles become more stable.

The correct answer is:
Larger colloidal particles are completely removed.

Solution:
Correct Option is : (A)
Larger colloidal particles are completely removed.

Topic: Chemistry, Surface Chemistry, NEET
What happens when dihydrogen reacts with chlorine?

Options:
A Formation of hydrogen chloride gas takes place
B Formation of water takes place
C Formation of hydrogen peroxide takes place
D Formation of chlorine gas takes place

The correct answer is:
Formation of hydrogen chloride gas takes place

Solution:
Correct Option is : (A)
Formation of hydrogen chloride gas takes place

Topic: Chemistry, Hydrogen, NEET
What happens when dihydrogen reacts with copper (II) oxide?

Options:
A Formation of copper (I) oxide takes place
B Formation of copper (II) chloride takes place
C Formation of water and copper metal takes place
D Formation of copper sulphate takes place

The correct answer is:
Formation of water and copper metal takes place

Solution:
Correct Option is : (C)
Formation of water and copper metal takes place

Topic: Chemistry, Hydrogen, NEET
What happens when dihydrogen reacts with sodium?

Options:
A Formation of sodium chloride takes place
B Formation of sodium hydride takes place
C Formation of hydrogen peroxide takes place
D Formation of sodium sulphate takes place

The correct answer is:
Formation of sodium hydride takes place

Solution:
Correct Option is : (B)
Formation of sodium hydride takes place

Topic: Chemistry, Hydrogen, NEET
What happens when DNA undergoes mutations?

Options:
A It becomes a different species.
B It is destroyed.
C Its genetic information changes.
D It becomes a protein.

The correct answer is:
Its genetic information changes.

Solution:
Mutations in DNA result in changes to its genetic information, which can impact the traits and characteristics of an organism.

Topic: Chemistry, Biomolecules, NEET
What happens when Eext is greater than 1.1 V in a Daniell cell?

Options:
A Electrons flow from Zn to Cu, and current flows from Cu to Zn.
B Electrons flow from Cu to Zn, and current flows from Zn to Cu.
C Zn dissolves at anode, and copper deposits at cathode.
D Copper dissolves at anode, and Zn deposits at cathode.

The correct answer is:
Electrons flow from Zn to Cu, and current flows from Cu to Zn.

Solution:
When Eext is greater than 1.1 V, electrons flow from Cu to Zn, and current flows from Zn to Cu.

Topic: Chemistry, Electrochemistry, NEET
What happens when electric current is passed through a colloidal sol?

Options:
A The sol becomes more stable.
B Coagulation occurs The particles aggregate and settle down.
C Electrophoresis The charged particles move towards the oppositely charged electrode.
D The sol becomes denser.

The correct answer is:
Electrophoresis The charged particles move towards the oppositely charged electrode.

Solution:
Correct Option is : (C)
Electrophoresis The charged particles move towards the oppositely charged electrode.

Topic: Chemistry, Surface Chemistry, NEET
What happens when ethyl chloride is treated with aqueous KOH?

Options:
A Methanol gets formed
B Propanol gets formed
C Ethanoic acid gets formed
D Ethanol gets formed

The correct answer is:
Ethanol gets formed

Solution:
Correct Option is : (D)
Ethanol gets formed

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What happens when excess silver nitrate solution is added to a series of cobalt(III) chloride compounds with ammonia?

Options:
A Precipitation of AgCl
B Formation of a new compound
C Formation of a gas
D No change in the solution

The correct answer is:
Precipitation of AgCl

Solution:
The paragraph mentions that some of the chloride ions in the series of cobalt(III) chloride compounds with ammonia can be precipitated as AgCl when excess silver nitrate solution is added.

Topic: Chemistry, Coordination Compounds, NEET
What happens when ∆G is positive for a reaction?

Options:
A The reaction proceeds in the forward direction.
B The reaction is spontaneous.
C The reaction is non-spontaneous
D The reaction reaches equilibrium.

The correct answer is:
The reaction is non-spontaneous

Solution:
When ∆G is positive, the reaction is considered non-spontaneous.

Topic: Chemistry, Chemical Equilibrium, NEET
What happens when H3PO3is heated?

Options:
A It decomposes to form phosphine gas (PH3).
B It decomposes to form phosphoric acid (H3PO4).
C It decomposes to form phosphorus pentoxide (P4O10).
D It decomposes to form phosphoric acid (H3PO4) and phosphine gas (PH3).

The correct answer is:
It decomposes to form phosphorus pentoxide (P4O10).

Solution:
Correct Option is : (C)
It decomposes to form phosphorus pentoxide (P4O10).

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
What happens when human insulin is not available?

Options:
A Use insulin from other animals
B Grow bacteria to produce insulin
C Elicit an immune response in the human body
D Nothing can be done

The correct answer is:
Use insulin from other animals

Solution:
If enough human insulin is not available, one would have to isolate and use insulin from other animals.

Topic: Biology, Biotechnology and Its Applications, NEET
What happens when hydrochloric acid (HCl) reacts with ammonia (NH3)?

Options:
A Formation of hydrogen gas (H2)
B Formation of oxygen gas (O2)
C Formation of water (H2O)
D Formation of ammonium chloride (NH4Cl)

The correct answer is:
Formation of ammonium chloride (NH4Cl)

Solution:
When hydrochloric acid (HCl) reacts with ammonia (NH3), the product formed is ammonium chloride (NH4Cl).

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET