datavorous/entrance-exam-dataset huggingface dataset:
What is the product of the reaction sequence below?

Options:
A 2-methyl-1-hexene
B 2,3-dimethyl-2-pentene
C 2-methyl-2-hexene
D 3-methyl-1-hexene

The correct answer is:
3-methyl-1-hexene

Solution:
Here the final product is 3-methyl-1-hexene and it is formed as follows

Topic: Chemistry, Hydrocarbons, NEET
What is the product of the reaction sequence?

Options:
A
B
C
D

The correct answer is:

Solution:
Here the final product is chlorobenzene

Topic: Chemistry, Amines, NEET
What is the product of the reaction when concentrated sulphuric acid adds to an alkene under cold conditions following the Markovnikov rule?

Options:
A Alkyl hydrogen sulfide
B Alkyl sulfide
C Alkyl hydrogen sulfate
D Alkyl sulfate

The correct answer is:
Alkyl hydrogen sulfate

Solution:
Concentrated sulphuric acid added to an alkene under cold conditions follows the Markovnikov rule and forms alkyl hydrogen sulfate as the product.

Topic: Chemistry, Hydrocarbons, NEET
What is the product of the reduction of FAD⁺ in the TCA cycle?

Options:
A NADH + H⁺
B FADH₂
C ATP
D GTP

The correct answer is:
FADH₂

Solution:
In the TCA cycle, FAD⁺ is reduced to FADH₂.

Topic: Biology, Respiration in Plants, NEET
What is the product when a carboxylic acid is reduced using lithium aluminium hydride?

Options:
A Alkene
B Aldehyde
C Ketone
D Primary alcohol

The correct answer is:
Primary alcohol

Solution:
Carboxylic acids are reduced to primary alcohols when treated with lithium aluminium hydride (LiAlH4).

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What is the product when a phenol reacts with aqueous sodium hydroxide (NaOH)?

Options:
A Sodium phenoxide and water
B Phenol oxide and sodium chloride
C Sodium oxide and hydrogen gas
D Sodium chloride and water

The correct answer is:
Sodium phenoxide and water

Solution:
Phenol reacts with aqueous sodium hydroxide to form sodium phenoxide and water.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What is the product when acid chlorides are hydrolyzed with water?

Options:
A Aldehydes
B Ketones
C Carboxylic acids
D Esters

The correct answer is:
Carboxylic acids

Solution:
Acid chlorides, when hydrolyzed with water, give carboxylic acids as the product.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What is the product when alkyl halides react with sodium in dry ether?

Options:
A Alkyl halides
B Sodium halides
C Hydrocarbons
D Alcohols

The correct answer is:
Hydrocarbons

Solution:
When alkyl halides react with sodium in dry ether, they give hydrocarbons.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What is the product when aluminum reacts with aqueous alkali?

Options:
A Sodium hydroxide
B Aluminum chloride
C Sodium tetrahydroxoaluminate(III)
D Hydrogen peroxide

The correct answer is:
Sodium tetrahydroxoaluminate(III)

Solution:
The reaction equation: 2Al (s) + 2NaOH(aq) + 6H2O(l) → 2 Na+[Al(OH)4]–(aq) + 3H2(g), indicates the formation of sodium tetrahydroxoaluminate(III).

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
What is the product when ammonia reacts with zinc sulfate (ZnSO4) solution?

Options:
A Ammonium chloride (NH4Cl)
B Zinc hydroxide (Zn(OH)2)
C Zinc chloride (ZnCl2)
D White precipitate

The correct answer is:
White precipitate

Solution:
The paragraph provides a chemical equation showing the formation of a white precipitate when ammonia reacts with zinc sulfate solution.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What is the product when an isonitrile (isocyanide) reacts as a nucleophile in a substitution reaction?

Options:
A Alkyl cyanide
B Alkyl nitrite
C Alkyl isocyanide
D Alkyl nitroalkane

The correct answer is:
Alkyl isocyanide

Solution:
When an isonitrile (isocyanide) acts as a nucleophile, it forms an alkyl isocyanide.

Topic: Chemistry, Amines, NEET
What is the product when bromine reacts with water?

Options:
A Hydrobromic acid
B Hypobromous acid
C Hydrochloric acid
D Hydrofluoric acid

The correct answer is:
Hypobromous acid

Solution:
When bromine reacts with water, it forms hypobromous acid.**

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What is the product when C6H5-CH2-NH2 reacts with nitrous acid?

Options:
A C6H5-N≡N
B C6H5-CH2-N⊕≡N
C C6H5-CH2-OH
D C6H5-NH2

The correct answer is:
C6H5-CH2-OH

Solution:
Primary amines with nitrous acid undergo diazotisation producing diazonium salt which further dissociates to alcohol and dinitrogen.
C6H5-CH2-NH2→HNO2C6H5CH2N2+→C6H5-CH2-OH

Topic: Chemistry, Amines, NEET
What is the product when C6H5CH2NH2reacts with HNO2?

Options:
A C6H5CH2OH
B C6H5CH3
C C6H5CH2CHO
D C6H5CH2COOH

The correct answer is:
C6H5CH2OH

Solution:
Correct Option is : (A)
C6H5CH2OH

Topic: Chemistry, Amines, NEET
What is the product when carbon reacts with concentrated nitric acid?

Options:
A Carbon monoxide (CO)
B Carbon tetrachloride (CCl4)
C Carbon dioxide (CO2)
D Carbonic acid (H2CO3)

The correct answer is:
Carbon dioxide (CO2)

Solution:
The paragraph provides the reaction equation for carbon reacting with concentrated nitric acid, which produces carbon dioxide (CO2).

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What is the product when chlorine reacts with water?

Options:
A Hydrochloric acid
B Hypochlorous acid
C Hydrobromic acid
D Hydrofluoric acid

The correct answer is:
Hypochlorous acid

Solution:
When chlorine reacts with water, it forms hypochlorous acid.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What is the product when dihydrogen reacts with metal oxides, where x, y, and z are stoichiometric coefficients?

Options:
A Metal hydride (MH)
B Water (H2O)
C Metal (M)
D Metal oxide (MO)

The correct answer is:
Metal (M)

Solution:
When dihydrogen reacts with metal oxides, it reduces them into the corresponding metals (M).

Topic: Chemistry, Hydrogen, NEET
What is the product when fluorine reacts with water?

Options:
A Oxygen
B Hydrofluoric acid
C Oxygen difluoride
D Hydrogen fluoride

The correct answer is:
Oxygen

Solution:
When fluorine reacts with water, it forms oxygen.**

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What is the product when iodine reacts with water in the presence of oxygen?

Options:
A Hydroiodic acid
B Iodine pentoxide
C Iodine monoxide
D Iodine dioxide

The correct answer is:
Iodine pentoxide

Solution:
In the presence of oxygen, iodine reacts with water to form iodine pentoxide.**

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What is the product when phosphorus present in the compound is oxidized to phosphate?

Options:
A Sodium sulfate
B Phosphoric acid (H3PO4)
C Sodium nitrate
D Ammonium molybdate

The correct answer is:
Phosphoric acid (H3PO4)

Solution:
When phosphorus is oxidized, it forms phosphoric acid (H3PO4).

Topic: Chemistry, General Organic Chemistry, NEET
What is the product when phosphorus reacts with concentrated nitric acid?

Options:
A Phosphine (PH3)
B Phosphoric acid (H3PO4)
C Phosphene (PH4)
D Phosphide ions (P3-)

The correct answer is:
Phosphoric acid (H3PO4)

Solution:
The paragraph provides the reaction equation for phosphorus reacting with concentrated nitric acid, which produces phosphoric acid (H3PO4).

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What is the product when white phosphorus dissolves in boiling NaOH solution in an inert atmosphere?

Options:
A Sodium phosphate
B Sodium hypophosphite
C Phosphine gas (PH3)
D Sodium hydroxide

The correct answer is:
Sodium hypophosphite

Solution:
The paragraph provides the reaction equation for white phosphorus dissolving in boiling NaOH solution, which produces sodium hypophosphite and phosphine gas (PH3).

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What is the prominent symptom of manganese toxicity in plants?

Options:
A The appearance of green spots surrounded by chlorotic veins
B The appearance of yellow spots surrounded by chlorotic veins
C The appearance of brown spots surrounded by chlorotic veins
D The appearance of red spots surrounded by chlorotic veins

The correct answer is:
The appearance of brown spots surrounded by chlorotic veins

Solution:
The prominent symptom of manganese toxicity is the appearance of brown spots surrounded by chlorotic veins.

Topic: Biology, Mineral Nutrition, NEET
What is the proportionality constant denoted as in the ideal gas equation?

Options:
A p
B V
C R
D T

The correct answer is:
R

Solution:
In the ideal gas equation, the proportionality constant is denoted as R.

Topic: Chemistry, States of Matter, NEET
What is the protein present in muscles and is an example of a fibrous protein?

Options:
A Insulin
B Myosin
C Albumin
D Hemoglobin

The correct answer is:
Myosin

Solution:
Myosin is an example of a fibrous protein present in muscles.

Topic: Chemistry, Biomolecules, NEET
What is the protonated form of ammonia at physiological pH?

Options:
A NH⁴⁺
B NH₃
C HNO₂
D NH₂

The correct answer is:
NH⁴⁺

Solution:
At physiological pH, the ammonia is protonated to form NH⁴⁺ (ammonium) ion.

Topic: Biology, Mineral Nutrition, NEET
What is the proximal convoluted tubule (PCT)?

Options:
A A portion of the renal tubule
B A common collecting duct
C A glomerulus
D Henle's loop

The correct answer is:
A portion of the renal tubule

Solution:
The proximal convoluted tubule (PCT) is a portion of the renal tubule.

Topic: Biology, Excretory Products and their Elimination, NEET
What is the public opposition to the method of disposal for nuclear waste?

Options:
A Strong
B Weak
C Non-existent
D Moderate

The correct answer is:
Strong

Solution:
The method of disposal for nuclear waste is meeting stiff opposition from the public.

Topic: Biology, Environmental Issues, NEET
What is the purity of sulfuric acid obtained by the Contact Process in the industry?

Options:
A 90-92%
B 96-98%
C 80-85%
D 99.9%

The correct answer is:
96-98%

Solution:
The sulfuric acid obtained by the Contact Process in the industry is typically 96-98% pure.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What is the purpose of a 35% (v/v) solution of ethylene glycol in cars?

Options:
A To increase the freezing point of water
B To lower the boiling point of water
C To lower the freezing point of water
D To increase the boiling point of water

The correct answer is:
To lower the freezing point of water

Solution:
The paragraph mentions that the antifreeze (ethylene glycol) lowers the freezing point of water.

Topic: Chemistry, Solutions, NEET
What is the purpose of a catalyst like platinum or palladium in fuel cells?

Options:
A To convert water into high-pressure steam
B To increase the rate of electrode reactions
C To remove products from the electrolyte compartment
D To convert hydrogen into oxygen

The correct answer is:
To increase the rate of electrode reactions

Solution:
Catalysts like finely divided platinum or palladium metal are incorporated into the electrodes for increasing the rate of electrode reactions.

Topic: Chemistry, Electrochemistry, NEET
What is the purpose of a coulometer in early electrolysis experiments?

Options:
A To measure temperature
B To determine the chemical equivalent weight of a substance
C To calculate the charge on one electron
D To determine the quantity of electricity passed

The correct answer is:
To determine the quantity of electricity passed

Solution:
In early electrolysis experiments, a coulometer was used to determine the quantity of electricity passed.

Topic: Chemistry, Electrochemistry, NEET
What is the purpose of a flower in angiosperms?

Options:
A To produce seeds
B To attract pollinators
C For sexual reproduction
D All of the above

The correct answer is:
For sexual reproduction

Solution:
The flower is the reproductive unit in angiosperms and is meant specifically for sexual reproduction.

Topic: Biology, Morphology of Flowering Plants, NEET
What is the purpose of a fractionating column in fractional distillation?

Options:
A To slow down the distillation process
B To make the distillation process less efficient
C To provide surfaces for heat exchange between vapors and condensed liquid
D To absorb impurities

The correct answer is:
To provide surfaces for heat exchange between vapors and condensed liquid

Solution:
A fractionating column in fractional distillation provides surfaces for heat exchange between ascending vapors and descending condensed liquid, aiding in separation.

Topic: Chemistry, General Organic Chemistry, NEET
What is the purpose of a fractionating column in fractional distillation?

Options:
A To make the distillation process slower
B To make the distillation process faster
C To provide surfaces for heat exchange between vapors and condensed liquid
D To absorb impurities

The correct answer is:
To provide surfaces for heat exchange between vapors and condensed liquid

Solution:
A fractionating column in fractional distillation provides surfaces for heat exchange between ascending vapors and descending condensed liquid, helping in separation.

Topic: Chemistry, General Organic Chemistry, NEET
What is the purpose of a platinum electrode in some half-cells, such as the hydrogen electrode?

Options:
A To act as a conductor of electricity.
B To facilitate the flow of electrons.
C To participate in the chemical reactions.
D To provide a stable surface for oxidation or reduction reactions.

The correct answer is:
To provide a stable surface for oxidation or reduction reactions.

Solution:
Sometimes metals like platinum or gold are used as inert electrodes. They do not participate in the reaction but provide their surface for oxidation or reduction reactions and for the conduction of electrons.

Topic: Chemistry, Electrochemistry, NEET
What is the purpose of a Punnett square?

Options:
A To understand the independent segregation of genes during meiosis
B To understand the dominant and recessive traits of an organism
C To predict the phenotype of the offspring of a cross
D To predict the genotype of the offspring of a cross

The correct answer is:
To predict the phenotype of the offspring of a cross

Solution:
The purpose of a Punnett square is to predict the phenotype of the offspring of a cross, based on the genotypes of the parents.

Topic: Biology, Principles of Inheritance and Variation, NEET
What is the purpose of a Punnett square?

Options:
A To represent the probability of all possible genotypes of offspring in a genetic cross
B To represent the probability of a single genotype of offspring in a genetic cross
C To represent the phenotype of a single offspring in a genetic cross
D To represent the phenotype of all possible offspring in a genetic cross

The correct answer is:
To represent the probability of all possible genotypes of offspring in a genetic cross

Solution:
A Punnett square is a graphical representation to calculate the probability of all possible genotypes of offspring in a genetic cross.

Topic: Biology, Principles of Inheritance and Variation, NEET
What is the purpose of a salt bridge in a galvanic cell?

Options:
A To facilitate the flow of electrons between the two electrodes.
B To connect the two half-cells externally.
C To prevent the mixing of electrolytes in the two half-cells.
D To increase the cell potential.

The correct answer is:
To prevent the mixing of electrolytes in the two half-cells.

Solution:
A salt bridge is used to connect the electrolytes of the two half-cells internally and prevent their mixing.

Topic: Chemistry, Electrochemistry, NEET
What is the purpose of a selectable marker in a vector?

Options:
A To identify and eliminate nontransformants
B To support high copy number
C To start replication
D To permit the growth of transformants

The correct answer is:
To identify and eliminate nontransformants

Solution:
In addition to the origin of replication, the vector requires a selectable marker, which helps in identifying and eliminating nontransformants and selectively permitting the growth of transformants.

Topic: Biology, Biotechnology - Principles and Processes, NEET
What is the purpose of a synaptic cleft?

Options:
A To separate pre- and post-synaptic neurons
B To increase the efficiency of impulse transmission
C To regulate the release of neurotransmitters
D To allow for direct current flow between neurons

The correct answer is:
To separate pre- and post-synaptic neurons

Solution:
A synaptic cleft separates the membranes of pre- and post-synaptic neurons, allowing for the transmission of a nerve impulse from one neuron to another.

Topic: Biology, Neural Control and Coordination, NEET
What is the purpose of a test cross?

Options:
A To determine the genotype of a recessive parent
B To determine the genotype of a dominant parent
C To determine the phenotype of a dominant parent
D To determine the phenotype of a recessive parent

The correct answer is:
To determine the genotype of a dominant parent

Solution:
A test cross is used to determine the genotype of an organism showing a dominant phenotype (and whose genotype is to be determined. by crossing it with the recessive parent instead of self crossing.

Topic: Biology, Principles of Inheritance and Variation, NEET
What is the purpose of ABO grouping of blood?

Options:
A To determine the type of blood
B To determine the amount of blood
C To determine the speed of blood transfusion
D To determine the color of blood

The correct answer is:
To determine the type of blood

Solution:
ABO grouping of blood is used to determine the type of blood based on the presence or absence of two surface antigens (chemicals that can induce immune response) on the RBCs namely A and B.

Topic: Biology, Body Fluids and Circulation, NEET
What is the purpose of adding alcohol and acetone to hydrophilic sols?

Options:
A To increase solvation
B To reduce coagulation
C To induce charge
D To cause dehydration

The correct answer is:
To cause dehydration

Solution:
The paragraph states that adding solvents like alcohol and acetone to hydrophilic sols leads to the dehydration of the dispersed phase.

Topic: Chemistry, Surface Chemistry, NEET
What is the purpose of adding bromine in CCl4 to an alkene in the laboratory?

Options:
A To produce a colorful reaction.
B To detect the presence of a double bond.
C To synthesize vic-dibromides.
D To generate a reddish-brown color.

The correct answer is:
To detect the presence of a double bond.

Solution:
The addition of bromine to an alkene in CCl4 is an important method for detecting the presence of a double bond in a molecule.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What is the purpose of adding Calgon to hard water?

Options:
A To make the water more acidic
B To increase water hardness
C To soften the water by preventing the precipitation of hardness ions
D To remove all dissolved ions from the water

The correct answer is:
To soften the water by preventing the precipitation of hardness ions

Solution:
Adding Calgon to hard water helps soften the water by forming soluble complexes with hardness ions, preventing their precipitation.

Topic: Chemistry, Hydrogen, NEET
What is the purpose of adding glycerol to shaving soaps?

Options:
A To add fragrance
B To prevent rapid drying
C To increase lathering
D To improve color

The correct answer is:
To prevent rapid drying

Solution:
Glycerol is added to shaving soaps to prevent rapid drying.

Topic: Chemistry, Chemistry in Everyday Life, NEET
What is the purpose of adding H2O in the half-reaction method for reactions occurring in acidic medium?

Options:
A To balance H atoms
B To balance O atoms
C To balance both H and O atoms
D To balance charge

The correct answer is:
To balance O atoms

Solution:
H2O is added in the half-reaction method for reactions occurring in acidic medium to balance O atoms.

Topic: Chemistry, Redox Reactions, NEET
What is the purpose of adding H+ ions in a redox reaction carried out in acidic solution?

Options:
A To neutralize the solution
B To increase the reaction rate
C To balance the ionic charges of reactants and products
D To reduce the pH of the solution

The correct answer is:
To balance the ionic charges of reactants and products

Solution:
H+ ions are added in a redox reaction in acidic solution to ensure that the total ionic charges of reactants and products are equal.

Topic: Chemistry, Redox Reactions, NEET
What is the purpose of adding starch to the solution during iodometry using Cu(II) as the oxidizing agent?

Options:
A To make the solution more colorful.
B To stabilize the Cu2I2 precipitate.
C To provide a visual indicator for the endpoint.
D To enhance the reaction between Cu2+ and I-.

The correct answer is:
To provide a visual indicator for the endpoint.

Solution:
Starch is added to the solution to act as an indicator. It forms a complex with iodine, resulting in an intense blue color, which serves as a visual indicator for the endpoint of the reaction.

Topic: Chemistry, Redox Reactions, NEET
What is the purpose of adding urea as a stabilizer to hydrogen peroxide?

Options:
A To increase its reactivity
B To enhance its color
C To lower its density
D To prevent explosive decomposition

The correct answer is:
To prevent explosive decomposition

Solution:
Urea is added as a stabilizer to hydrogen peroxide to prevent explosive decomposition.

Topic: Chemistry, Hydrogen, NEET
What is the purpose of adjusting the pressure of different gases in the cathode ray tube?

Options:
A To increase the voltage
B To decrease the voltage
C To improve visibility
D To observe electrical discharge

The correct answer is:
To observe electrical discharge

Solution:
The pressure of different gases in the cathode ray tube could be adjusted by evacuation of the glass tubes to observe electrical discharge.

Topic: Chemistry, Structure of Atom, NEET
What is the purpose of Agarose gel electrophoresis in restriction enzyme digestions?

Options:
A To mix the source DNA and the vector DNA
B To prepare recombinant DNA
C To check the progression of digestion
D To purify the DNA

The correct answer is:
To check the progression of digestion

Solution:
Agarose gel electrophoresis is employed to check the progression of restriction enzyme digestion by monitoring the movement of DNA towards the positive electrode.

Topic: Biology, Biotechnology - Principles and Processes, NEET
What is the purpose of amniocentesis?

Options:
A To test the survivability of the fetus
B To find new methods of oral contraceptives
C To determine the presence of certain genetic disorders
D To provide medical assistance to pregnant mothers

The correct answer is:
To determine the presence of certain genetic disorders

Solution:
In amniocentesis, some of the amniotic fluid of the developing fetus is taken to analyse the fetal cells and dissolved substances. This procedure is used to test for the presence of certain genetic disorders such as, down syndrome, haemophilia, sickle:cell anemia, etC)

Topic: Biology, Reproductive Health, NEET
What is the purpose of an ECG?

Options:
A To monitor heart activity
B To regulate heart rate
C To diagnose heart diseases
D To treat heart diseases

The correct answer is:
To diagnose heart diseases

Solution:
An ECG (electrocardiogram) is used to obtain information about the electrical activity of the heart and is used to diagnose various heart conditions.

Topic: Biology, Body Fluids and Circulation, NEET
What is the purpose of an indicator substance in titration?

Options:
A To neutralize the reactants
B To initiate the reaction
C To produce a dramatic color change
D To prevent the reaction from occurring

The correct answer is:
To produce a dramatic color change

Solution:
An Indicator substance is used to produce a dramatic color change at the endpoint of titration.

Topic: Chemistry, Redox Reactions, NEET
What is the purpose of an indicator substance in titrations where there is no self-color change?

Options:
A To initiate the reaction
B To neutralize the reactants
C To produce a dramatic color change
D To signal the endpoint

The correct answer is:
To signal the endpoint

Solution:
In titrations without a self-color change, the indicator substance is used to signal the endpoint.

Topic: Chemistry, Redox Reactions, NEET