datavorous/entrance-exam-dataset huggingface dataset:
What is the role of hexokinase in the glycolytic pathway?

Options:
A Form glucose-6-phosphate
B Form fructose-6-phosphate
C Convert glucose-6-phosphate to fructose-6-phosphate
D Convert fructose-6-phosphate to glucose-6-phosphate

The correct answer is:
Form glucose-6-phosphate

Solution:
Hexokinase phosphorylates glucose and fructose to give rise to glucose-6-phosphate.

Topic: Biology, Respiration in Plants, NEET
What is the role of HNO3in the nitrating mixture used for nitration of benzene?

Options:
A HNO3acts as a solvent for benzene, facilitating the reaction.
B HNO3serves as a reducing agent to convert nitrobenzene to benzene.
C HNO3acts as a base in the nitrating mixture and provides the electrophile, NO2+.
D HNO3provides oxygen atoms to benzene, leading to the formation of nitrobenzene.

The correct answer is:
HNO3acts as a base in the nitrating mixture and provides the electrophile, NO2+.

Solution:
Correct Option is : (C)
HNO3acts as a base in the nitrating mixture and provides the electrophile, NO2+.

Topic: Chemistry, Amines, NEET
What is the role of hormones in target tissue metabolism and physiological functions?

Options:
A Hormones stimulate target tissue metabolism and physiological functions
B Hormones inhibit target tissue metabolism and physiological functions
C Hormones regulate target tissue metabolism and physiological functions
D Hormones do not have any effect on target tissue metabolism and physiological functions

The correct answer is:
Hormones regulate target tissue metabolism and physiological functions

Solution:
Target tissue metabolism and physiological functions are regulated by hormones.

Topic: Biology, Chemical Coordination and Integration, NEET
What is the role of hormones in the control of digestive functions?

Options:
A Neural control
B Hormonal control
C Both neural and hormonal control
D None of the above

The correct answer is:
Both neural and hormonal control

Solution:
The activities of the gastro-intestinal tract are under neural and hormonal control for proper coordination of different parts. Hormonal control of the secretion of digestive juices is carried out by local hormones produced by the gastric and intestinal mucosa.

Topic: Biology, Digestion and Absorption, NEET
What is the role of hormones in the human body?

Options:
A To provide rapid coordination
B To provide long-lasting coordination
C To provide coordination and regulation of physiological functions
D To provide coordination between endocrine and nervous systems

The correct answer is:
To provide coordination and regulation of physiological functions

Solution:
Hormones in the human body provide coordination and regulation of physiological functions.

Topic: Biology, Chemical Coordination and Integration, NEET
What is the role of hydrochloric acid in the preparation of orthoboric acid from borax?

Options:
A It acts as a catalyst
B It neutralizes the borax
C It acidifies the borax solution
D It forms a precipitate with borax

The correct answer is:
It acidifies the borax solution

Solution:
Hydrochloric acid is used to acidify the aqueous solution of borax during the preparation of orthoboric acid.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
What is the role of hydrogen peroxide in the synthesis of hydroquinone?

Options:
A It acts as a catalyst
B It is a reactant in the synthesis
C It is used to purify hydroquinone
D It has no role in the synthesis of hydroquinone

The correct answer is:
It is a reactant in the synthesis

Solution:
Hydrogen peroxide is used as a reactant in the synthesis of hydroquinone.

Topic: Chemistry, Hydrogen, NEET
What is the role of hydrolysis in the production of hydrogen peroxide from peroxodisulphate?

Options:
A To increase the pH of the solution
B To decrease the pH of the solution
C To remove excess water
D To produce hydrogen peroxide

The correct answer is:
To produce hydrogen peroxide

Solution:
Hydrolysis of peroxodisulphate yields hydrogen peroxide as one of the products.

Topic: Chemistry, Hydrogen, NEET
What is the role of hydroxide ion in the reaction with CH3Cl?

Options:
A It acts as a catalyst.
B It acts as an electrophile.
C It acts as a leaving group.
D It acts as a nucleophile.

The correct answer is:
It acts as a nucleophile.

Solution:
In the reaction, hydroxide ion attacks the carbon atom in CH3Cl, making it a nucleophile.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What is the role of hypothalamic hormones in the brain?

Options:
A Controls body temperature, urge for eating and drinking
B Involved in the regulation of sexual behavior
C Secrete hormones called hypothalamic hormones
D None of the above

The correct answer is:
Secrete hormones called hypothalamic hormones

Solution:
The hypothalamus contains several groups of neurosecretory cells, which secrete hormones called hypothalamic hormones.

Topic: Biology, Neural Control and Coordination, NEET
What is the role of hypothalamus in the brain?

Options:
A Forms the major part of the human brain
B A major coordinating center for sensory and motor signaling
C Contains a number of centers which control body temperature, urge for eating and drinking
D None of the above

The correct answer is:
Contains a number of centers which control body temperature, urge for eating and drinking

Solution:
The hypothalamus contains a number of centers which control body temperature, urge for eating and drinking.

Topic: Biology, Neural Control and Coordination, NEET
What is the role of inert electrodes like platinum or gold in electrolysis?

Options:
A They participate in chemical reactions.
B They act as a source or sink for electrons.
C They control the temperature of the electrolytic cell.
D They speed up the electrolysis process.

The correct answer is:
They act as a source or sink for electrons.

Solution:
Inert electrodes like platinum or gold do not participate in chemical reactions; they act only as a source or sink for electrons.

Topic: Chemistry, Electrochemistry, NEET
What is the role of intermolecular forces in determining the stability of a substance?

Options:
A They make molecules move faster.
B They have no effect on stability.
C They tend to keep molecules closer.
D They increase thermal energy.

The correct answer is:
They tend to keep molecules closer.

Solution:
Intermolecular forces tend to keep molecules closer, which affects the stability of a substance, as stated in the paragraph.

Topic: Chemistry, Solid State, NEET
What is the role of introns in genetics?

Options:
A They appear in mature or processed RNA
B They do not appear in mature or processed RNA
C They are loosely defined as regulatory genes
D None of the above

The correct answer is:
They do not appear in mature or processed RNA

Solution:
Introns, also known as intervening sequences, do not appear in mature or processed RNA in eukaryotes.

Topic: Biology, Molecular Basis of Inheritance, NEET
What is the role of invertase enzyme in cane sugar?

Options:
A Converts glucose into fructose
B Converts cane sugar into glucose and fructose
C Converts fructose into glucose
D Converts starch into maltose

The correct answer is:
Converts cane sugar into glucose and fructose

Solution:
The paragraph mentions that the invertase enzyme converts cane sugar into glucose and fructose.

Topic: Chemistry, Surface Chemistry, NEET
What is the role of invertase in converting sucrose?

Options:
A Convert glucose to fructose
B Convert fructose to glucose
C Convert sucrose to glucose and fructose
D Convert glucose and fructose to sucrose

The correct answer is:
Convert sucrose to glucose and fructose

Solution:
Sucrose is converted into glucose and fructose by the enzyme invertase.

Topic: Biology, Respiration in Plants, NEET
What is the role of iron in the formation of chlorophyll?

Options:
A It helps in the activation of catalase enzyme.
B It is essential for the formation of chlorophyll.
C It is involved in the transfer of electrons.
D It is reversibly oxidized from Fe²⁺ to Fe³⁺ during electron transfer.

The correct answer is:
It is essential for the formation of chlorophyll.

Solution:
Iron is essential for the formation of chlorophyll.

Topic: Biology, Mineral Nutrition, NEET
What is the role of K2Cr2O7
when it is not a self-indicator in a titration?

Options:
A It acts as a reducing agent
B It acts as a pH buffer
C It acts as a catalyst
D It oxidizes an indicator substance

The correct answer is:
It oxidizes an indicator substance

Solution:
K2Cr2O7, when not a self-indicator, oxidizes an indicator substance to produce a color change at the end point of the titration.

Topic: Chemistry, Redox Reactions, NEET
What is the role of kabadiwallahs and rag-pickers in waste management?

Options:
A To dispose of waste in landfills
B To burn waste
C To separate materials for recycling
D To leave waste in deep pits in the ground

The correct answer is:
To separate materials for recycling

Solution:
Kabadiwallahs and rag-pickers play a role in separating materials for recycling.

Topic: Biology, Environmental Issues, NEET
What is the role of LAB in our stomach?

Options:
A They cause disease
B They produce acid
C They produce CO₂
D They check disease-causing microbes

The correct answer is:
They check disease-causing microbes

Solution:
The LAB play a beneficial role in checking disease-causing microbes in our stomach.

Topic: Biology, Microbes in Human Welfare, NEET
What is the role of large bundle shealth cells found around the vascular bundles in C4 plants?

Options:
A To increase the number of chloroplast for the operation of Calvin cycle
B To enable the plant to tolerate high temperature
C To protect the vascular tissue from high light intensity
D To provide the site for photorespiratory pathway

The correct answer is:
To increase the number of chloroplast for the operation of Calvin cycle

Solution:
C4 plants show:

Chloroplast dimorphism.

Presence of Kranz anatomy.

Two times carboxylation process.

No photorespiration.

The large bundle sheath cells around the vascular bundles in the C4 plants have numerous chloroplasts for the operation of calvin cycle.

Topic: Biology, Photosynthesis in Higher Plants, NEET, NEET 2022 (Phase 1)
What is the role of leghemoglobin in the nodule formation process?

Options:
A It multiplies and colonizes the surroundings of roots.
B It attaches to epidermal and root hair cells.
C It catalyses the conversion of atmospheric nitrogen to ammonia.
D It is a component in the nodule.

The correct answer is:
It is a component in the nodule.

Solution:
Leghemoglobin is present in the nodule and makes the nodules pink. It is one of the necessary biochemical components of the nodule.

Topic: Biology, Mineral Nutrition, NEET
What is the role of leucocytes in the blood?

Options:
A Transport of respiratory gases
B Destruction of pathogens
C Regulate osmotic balance
D Clotting of blood

The correct answer is:
Destruction of pathogens

Solution:
Leucocytes, also known as white blood cells, play a crucial role in defending the body against pathogens and foreign invaders.

Topic: Biology, Body Fluids and Circulation, NEET
What is the role of LH in the process of spermatogenesis?

Options:
A Stimulate the synthesis and secretion of androgens
B Acts on the Sertoli cells
C Stimulate secretion of factors which help in the process of spermiogenesis
D None of the above

The correct answer is:
Stimulate the synthesis and secretion of androgens

Solution:
LH acts at the Leydig cells and stimulates the synthesis and secretion of androgens, which in turn stimulates the process of spermatogenesis.

Topic: Biology, Human Reproduction, NEET
What is the role of LiAlH4 in the preparation of diborane?

Options:
A It acts as a reducing agent
B It forms a complex with boron trifluoride
C It serves as a catalyst
D It reacts with diborane to form borohydrides

The correct answer is:
It acts as a reducing agent

Solution:
LiAlH4 is used in the preparation of diborane as a reducing agent.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
What is the role of LiAlH4 in the reduction of nitriles to primary amines?

Options:
A LiAlH4 acts as a catalyst.
B LiAlH4 provides nitrogen.
C LiAlH4 is a reducing agent.
D LiAlH4 is a strong acid.

The correct answer is:
LiAlH4 is a reducing agent.

Solution:
LiAlH4 serves as a reducing agent in the reduction of nitriles to primary amines, providing the necessary hydride ions for the reduction reaction.

Topic: Chemistry, Amines, NEET
What is the role of lipases in detergent formulations?

Options:
A Clot removal
B Ethanol production
C Cholesterol reduction
D Stain removal

The correct answer is:
Stain removal

Solution:
Lipases are helpful in removing oily stains from the laundry and are used in detergent formulations.

Topic: Biology, Microbes in Human Welfare, NEET
What is the role of lipases in the digestion of fats?

Options:
A They convert fats into di- and monoglycerides
B They convert fats into fatty acids
C They convert fats into amino acids
D They convert fats into nucleotides

The correct answer is:
They convert fats into di- and monoglycerides

Solution:
Lipases are enzymes that act on fats in the chyme, breaking them down into di- and monoglycerides. This process is aided by the presence of bile in the small intestine.

Topic: Biology, Digestion and Absorption, NEET
What is the role of macrophages in the replication of HIV?

Options:
A Destroying the virus particles
B Acting as a factory for producing virus particles
C Stopping the replication of the virus
D Encapsulating the virus particles

The correct answer is:
Acting as a factory for producing virus particles

Solution:
Macrophages continue to produce virus particles and act as a factory for producing HIV.

Topic: Biology, Human Health and Diseases, NEET
What is the role of magnesium in plants?

Options:
A It is an activator of enzymes
B It is a component of energy-related chemical compounds
C It alters the osmotic potential of a cell
D It is a structural element of cells

The correct answer is:
It is a component of energy-related chemical compounds

Solution:
Magnesium is a component of chlorophyll and is important for photosynthesis in plants.

Topic: Biology, Mineral Nutrition, NEET
What is the role of magnesium in the normal functioning of cells?

Options:
A Involved in the synthesis of DNA and RNA
B Activates certain enzymes
C Regulates metabolic activities
D None of the above

The correct answer is:
Activates certain enzymes

Solution:
Magnesium activates the enzymes of respiration, photosynthesis and is involved in the synthesis of DNA and RNA. It also helps to regulate metabolic activities

Topic: Biology, Mineral Nutrition, NEET
What is the role of manganese(II) ions in speeding up the oxidation of water by potassium permanganate?

Options:
A They act as a reducing agent.
B They catalyze the reaction.
C They inhibit the reaction.
D They have no effect on the reaction.

The correct answer is:
They catalyze the reaction.

Solution:
Manganese(II) ions or the presence of zinc sulfate or zinc oxide can catalyze the oxidation of water by potassium permanganate.

Topic: Chemistry, d and f Block Elements, NEET
What is the role of meiosis in sexual reproduction?

Options:
A The production of diploid daughter cells
B The production of haploid daughter cells
C The fusion of gametes
D The formation of specialised diploid cells

The correct answer is:
The formation of specialised diploid cells

Solution:
Meiosis is responsible for the formation of specialised diploid cells that give rise to gametes through a reduction in chromosome number.

Topic: Biology, Cell Cycle and Cell Division, NEET
What is the role of meiosis in the life cycle of sexually reproducing organisms?

Options:
A It ensures the production of diploid phase
B It ensures the production of haploid phase
C It restores the diploid phase
D It restores the haploid phase

The correct answer is:
It ensures the production of haploid phase

Solution:
Meiosis ensures the production of haploid phase in the life cycle of sexually reproducing organisms whereas fertilisation restores the diploid phase.

Topic: Biology, Cell Cycle and Cell Division, NEET
What is the role of metal ions in enzymes?

Options:
A To form coordination bonds with the substrate.
B To serve as co-factors.
C To be a part of the active site.
D To be essential chemical components.

The correct answer is:
To form coordination bonds with the substrate.

Solution:
A number of enzymes require metal ions for their activity, which form coordination bonds with side chains at the active site and at the same time form one or more coordination bonds with the substrate.

Topic: Biology, Biomolecules (B), NEET
What is the role of methanogens in the anaerobic sludge during sewage treatment?

Options:
A They help in digestion of cellulose
B They produce large amounts of methane
C They play no role
D They produce large amounts of hydrogen sulphide

The correct answer is:
They produce large amounts of methane

Solution:
Methanogens are bacteria that grow anaerobically on cellulosic material and produce large amounts of methane along with CO₂ and H₂.

Topic: Biology, Microbes in Human Welfare, NEET
What is the role of methanogens in the rumen of cattle?

Options:
A They help in the breakdown of cellulose and play an important role in cattle nutrition
B They produce methane and nitrogen
C They produce carbon dioxide and hydrogen
D They produce nitrogen and oxygen

The correct answer is:
They help in the breakdown of cellulose and play an important role in cattle nutrition

Solution:
Methanogens, including Methanobacterium, are present in the rumen of cattle and help in the breakdown of cellulose, playing an important role in cattle nutrition.

Topic: Biology, Microbes in Human Welfare, NEET
What is the role of microbes in human society?

Options:
A To play an important role in the welfare of human society
B To produce industrial products
C To convert milk into curd
D To produce biogas

The correct answer is:
To play an important role in the welfare of human society

Solution:
It is clear from the diverse uses human beings have put microbes to that they play an important role in the welfare of human society.

Topic: Biology, Microbes in Human Welfare, NEET
What is the role of microbes in making cheese?

Options:
A To treat sewage
B To impart texture, taste, and flavor
C To produce antibiotics
D To convert milk into curd

The correct answer is:
To impart texture, taste, and flavor

Solution:
Bacteria and fungi are used to impart particular texture, taste, and flavor to cheese.

Topic: Biology, Microbes in Human Welfare, NEET
What is the role of microbes in sewage treatment?

Options:
A To rival the treatment process
B To contribute to the pollution
C To play a major role in treating waste water
D To increase water-borne diseases

The correct answer is:
To play a major role in treating waste water

Solution:
Microbes play a major role in treating millions of gallons of waste water across the world and have been used in this process for over a century.

Topic: Biology, Microbes in Human Welfare, NEET
What is the role of mineral acid in the preparation of carboxylic acids from Grignard reagents and carbon dioxide?

Options:
A It serves as a reducing agent.
B It acts as a catalyst.
C It neutralizes the Grignard reagent.
D It initiates the reaction with carbon dioxide.

The correct answer is:
It neutralizes the Grignard reagent.

Solution:
Mineral acid is used to neutralize the Grignard reagent, allowing the formation of carboxylic acids from the salts produced by the reaction with carbon dioxide.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What is the role of molten sodium hydroxide in the synthesis of phenol from benzene?

Options:
A To provide heat for the reaction
B To facilitate the separation of phenol
C To dehydrate benzene sulphonic acid
D To convert benzene into benzene sulphonic acid

The correct answer is:
To dehydrate benzene sulphonic acid

Solution:
Molten sodium hydroxide serves to dehydrate benzene sulphonic acid, leading to the formation of sodium phenoxide.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What is the role of molybdenum in Haber's process for the manufacture of ammonia?

Options:
A Catalyst
B Poison
C Promoter
D Adsorbent

The correct answer is:
Promoter

Solution:
The paragraph mentions that in Haber's process for the manufacture of ammonia, molybdenum acts as a promoter for iron, which is used as a catalyst.

Topic: Chemistry, Surface Chemistry, NEET
What is the role of mosses in preventing soil erosion?

Options:
A They form dense mats on the soil
B They decompose rocks
C They provide food for herbivores
D They are used as fuel

The correct answer is:
They form dense mats on the soil

Solution:
Since moses form dense mats on the soil, they reduce the impact of falling rain and prevent soil erosion.

Topic: Biology, Plant Kingdom, NEET
What is the role of mycorrhiza in water and mineral absorption in plants?

Options:
A To absorb light
B To absorb carbon dioxide
C To provide minerals and water to the roots
D To produce oxygen

The correct answer is:
To provide minerals and water to the roots

Solution:
The fungal hyphae of a mycorrhiza have a large surface area that absorb minerals and water from the soil. In return, the roots provide sugars and N-containing compounds to the mycorrhizae.

Topic: Biology, Transport in Plants, NEET
What is the role of 'n' in scientific notation?

Options:
A It represents the digit term
B It represents the number N
C It is an exponent with positive or negative values
D It is always zero

The correct answer is:
It is an exponent with positive or negative values

Solution:
'n' in scientific notation is an exponent with positive or negative values.

Topic: Chemistry, Some Basic Concepts of Chemistry, NEET
What is the role of Na+ in the generation of action potential?

Options:
A it helps the membrane to get depolarised
B it helps the membrane to get repolarised
C cannot be defined
D none of the above

The correct answer is:
it helps the membrane to get depolarised

Solution:
The immediate change that occurs in the membrane is known as action potential causing the membrane to get depolarised

Topic: Biology, Neural Control and Coordination, NEET
What is the role of NAD⁺ in the reactions catalysed by pyruvic dehydrogenase?

Options:
A Transport of pyruvate from the cytoplasm into the mitochondria
B Removal of hydrogen atoms from pyruvate
C Participation as a coenzyme
D Synthesis of ATP

The correct answer is:
Participation as a coenzyme

Solution:
The reactions catalysed by pyruvic dehydrogenase require the participation of several coenzymes, including NAD⁺ and Coenzyme A.

Topic: Biology, Respiration in Plants, NEET
What is the role of NAD⁺ in the TCA cycle?

Options:
A To provide energy for the cycle
B To act as a substrate for the reaction
C To be reduced to NADH + H⁺
D To act as a cofactor for the reaction

The correct answer is:
To be reduced to NADH + H⁺

Solution:
NAD⁺ is reduced to NADH + H⁺ at three points in the TCA cycle.

Topic: Biology, Respiration in Plants, NEET
What is the role of NaOH in the synthesis of phenol from chlorobenzene?

Options:
A To act as a catalyst.
B To neutralise the acidic byproducts.
C To convert chlorobenzene into phenol directly.
D To facilitate the separation of phenol.

The correct answer is:
To convert chlorobenzene into phenol directly.

Solution:
Sodium hydroxide (NaOH) reacts with chlorobenzene to form sodium phenoxide, which can be acidified to yield phenol.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What is the role of National AIDS Control Organisation (NACO) in preventing AIDS?

Options:
A Ignoring the presence of AIDS
B Promoting the spread of AIDS
C Educating people about AIDS
D Neglecting the problem of AIDS

The correct answer is:
Educating people about AIDS

Solution:
NACO plays an important role in educating people about AIDS and preventing its spread.

Topic: Biology, Human Health and Diseases, NEET