datavorous/entrance-exam-dataset huggingface dataset:
What is the role of adenosine deaminase (ADA) in the human body?

Options:
A To detect mutated genes
B To detect antigens in ELISA
C To aid the immune system function
D To detect very low amounts of DNA

The correct answer is:
To aid the immune system function

Solution:
Adenosine deaminase (ADA) is a crucial enzyme for the immune system to function. The disorder is caused by the deletion of the gene for ADA)

Topic: Biology, Biotechnology and Its Applications, NEET
What is the role of adrenaline and noradrenaline?

Options:
A Regulate the blood glucose levels
B Regulate the blood calcium levels
C Provide cell-mediated immunity
D Provide emergency hormones

The correct answer is:
Provide emergency hormones

Solution:
Adrenaline and noradrenaline are rapidly secreted in response to stress of any kind and during emergency situations and are called emergency hormones or hormones of Fight or Flight.

Topic: Biology, Chemical Coordination and Integration, NEET
What is the role of adsorption in heterogeneous catalysis?

Options:
A Adsorption helps in the regeneration of the catalyst.
B Adsorption increases the concentration of reactants.
C Adsorption provides a surface for the reaction to occur.
D Adsorption prevents the formation of by-products.

The correct answer is:
Adsorption provides a surface for the reaction to occur.

Solution:
Correct Option is : (C)
Adsorption provides a surface for the reaction to occur.

Topic: Chemistry, Surface Chemistry, NEET
What is the role of adsorption in the froth flotation process used especially for concentration of sulphide ores?

Options:
A Adsorption enhances the coloration of the froth.
B Adsorption selectively attaches hydrophobic particles to the bubbles.
C Adsorption reduces the surface tension of the water.
D Adsorption neutralizes the acidic components of the ore.

The correct answer is:
Adsorption selectively attaches hydrophobic particles to the bubbles.

Solution:
Correct Option is : (B)
Adsorption selectively attaches hydrophobic particles to the bubbles.

Topic: Chemistry, Surface Chemistry, NEET
What is the role of agar plates in recombinant technologies?

Options:
A To allow transformed cells to grow
B To inhibit the growth of untransformed cells
C To allow the expression of foreign genes in host cells
D To purify the desired protein

The correct answer is:
To inhibit the growth of untransformed cells

Solution:
Agar plates are used to inhibit the growth of untransformed cells.

Topic: Biology, Biotechnology - Principles and Processes, NEET
What is the role of Agrobacterium vectors in preventing nematode infestation?

Options:
A To introduce specific genes
B To initiate RNAi
C To produce dsRNA
D To silence specific mRNA

The correct answer is:
To introduce specific genes

Solution:
The role of Agrobacterium vectors in preventing nematode infestation is to introduce specific nematode-specific genes into the host plant. The introduction of these genes produces both sense and anti-sense RNA, which initiates RNAi and silences the specific mRNA of the nematode, protecting the transgenic host plant.

Topic: Biology, Biotechnology and Its Applications, NEET
What is the role of air in the slow oxidation of phenols?

Options:
A To act as a solvent
B To provide oxygen for oxidation
C To quench the reaction
D To enhance the reaction selectivity

The correct answer is:
To provide oxygen for oxidation

Solution:
Air provides oxygen for the oxidation of phenols.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What is the role of alcoholic potassium hydroxide in the dehydrohalogenation of vicinal dihalides?

Options:
A It acts as a catalyst
B It promotes the addition of hydrogen halides
C It deprotonates the alkene
D It eliminates hydrogen halides

The correct answer is:
It eliminates hydrogen halides

Solution:
Alcoholic potassium hydroxide eliminates hydrogen halides in the dehydrohalogenation of vicinal dihalides.

Topic: Chemistry, Hydrocarbons, NEET
What is the role of alkali metal salts in Kolbe electrolysis?

Options:
A Catalyst
B Electrolyte
C Solvent
D Reducing agent

The correct answer is:
Electrolyte

Solution:
In Kolbe electrolysis, alkali metal salts of carboxylic acids act as the electrolyte, allowing the flow of electric current and facilitating the reaction.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What is the role of ammonia in the reaction at the cathode of a dry cell?

Options:
A It forms a complex with Zn2+
B It produces electrical energy
C It generates heat
D It converts chemical energy into mechanical energy

The correct answer is:
It forms a complex with Zn2+

Solution:
Ammonia produced in the reaction forms a complex with Zn2+ to give [Zn(NH3)4] 2+ .

Topic: Chemistry, Electrochemistry, NEET
What is the role of ammonia in the reaction with carboxylic acids?

Options:
A Catalyst
B Solvent
C Reducing agent
D Reactant

The correct answer is:
Reactant

Solution:
Ammonia acts as a reactant in the reaction with carboxylic acids, forming ammonium salts, as mentioned in the paragraph.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What is the role of ammonia in Tollens' reagent?

Options:
A To neutralise the aldehyde
B To dissolve the silver mirror
C To stabilise the silver ions
D To enhance the colour of the silver mirror

The correct answer is:
To stabilise the silver ions

Solution:
Ammonia in Tollens' reagent serves to stabilise the silver ions, preventing their precipitation until they react with the aldehyde.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What is the role of ampicillin in this process?

Options:
A It is used to treat recipient cells
B It is used to select transformed cells
C It is used to synthesize recombinant DNA
D It is used to incubate with a restriction enzyme

The correct answer is:
It is used to select transformed cells

Solution:
Ampicillin is used in this process as a selectable marker to select transformed cells. Transformed cells will be resistant to ampicillin, allowing for their selection on agar plates containing the antibiotic.

Topic: Biology, Biotechnology - Principles and Processes, NEET
What is the role of amylases in pancreatic juice?

Options:
A To aid in the digestion of carbohydrates
B To aid in the digestion of proteins
C To aid in the digestion of fats
D To aid in the absorption of vitamins

The correct answer is:
To aid in the digestion of carbohydrates

Solution:
Amylases are enzymes present in pancreatic juice that help to break down carbohydrates, such as starch and glycogen, into smaller sugars like glucose, maltose and dextrins. These enzymes are essential for the Digestion and Absorption of carbohydrates by the body.

Topic: Biology, Digestion and Absorption, NEET
What is the role of an electrolyte in the bulk preparation of Dihydrogen by electrolytic method?

Options:
A The electrolytes such as acids or bases increase the electrical conductivity of water and the rate of electrolysis.
B The electrolyte helps to prevent conducting electricity within the electrolytic cell.
C The electrolyte enhances the corrosion of electrodes during the process.
D The electrolyte prevents the formation of dihydrogen gas from water.

The correct answer is:
The electrolytes such as acids or bases increase the electrical conductivity of water and the rate of electrolysis.

Solution:
Correct Option is : (A)
The electrolytes such as acids or bases increase the electrical conductivity of water and the rate of electrolysis.

Topic: Chemistry, Hydrogen, NEET
What is the role of an oxidizing agent in a redox reaction?

Options:
A To donate electrons
B To reduce the oxidation number
C To increase the oxidation number
D To act as a catalyst

The correct answer is:
To increase the oxidation number

Solution:
An oxidizing agent's role in a redox reaction is to increase the oxidation number of the element in the substance.

Topic: Chemistry, Redox Reactions, NEET
What is the role of Angiotensin II in the Renin-Angiotensin mechanism?

Options:
A Vasodilation
B Vasoconstriction
C Adrenal cortex stimulation
D Glomerular blood pressure regulation

The correct answer is:
Vasoconstriction

Solution:
Angiotensin II is a powerful vasoconstrictor that increases glomerular blood pressure and GFR.

Topic: Biology, Excretory Products and their Elimination, NEET
What is the role of anhydrous aluminium chloride or cuprous chloride in the Gatterman-Koch reaction?

Options:
A Reducing agent
B Catalyst
C Solvent
D Oxidizing agent

The correct answer is:
Catalyst

Solution:
Anhydrous aluminium chloride or cuprous chloride acts as a catalyst in the Gatterman-Koch reaction, facilitating the conversion of benzene or its derivatives to benzaldehyde.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What is the role of anhydrous aluminum chloride in the Friedel-Crafts alkylation reaction?

Options:
A It acts as a reducing agent.
B It acts as a Lewis acid catalyst.
C It serves as a source of protons.
D It acts as a solvent.

The correct answer is:
It acts as a Lewis acid catalyst.

Solution:
Anhydrous aluminum chloride acts as a Lewis acid catalyst in the Friedel-Crafts alkylation reaction by accepting a pair of electrons from the alkyl halide, forming a reactive electrophile that can attack the benzene ring.

Topic: Chemistry, Hydrocarbons, NEET
What is the role of anhydrous aluminum chloride in the isomerization reaction of alkanes with hydrogen chloride gas?

Options:
A It acts as a catalyst.
B It provides hydrogen atoms for the reaction.
C It is a solvent for the reaction.
D It is an oxidizing agent.

The correct answer is:
It acts as a catalyst.

Solution:
Anhydrous aluminum chloride acts as a Lewis acid catalyst in the isomerization reaction of alkanes with hydrogen chloride gas, facilitating the rearrangement of the alkane molecules.

Topic: Chemistry, Hydrocarbons, NEET
What is the role of antibiotics in dealing with infectious diseases?

Options:
A Making them worse
B Helping to effectively treat them
C Making them more infectious
D Making them less severe

The correct answer is:
Helping to effectively treat them

Solution:
Discovery of antibiotics and various other drugs has also enabled us to effectively treat infectious diseases.

Topic: Biology, Human Health and Diseases, NEET
What is the role of aqueous base when hydrolyzing acid chlorides?

Options:
A It neutralizes the acid chloride.
B It forms esters.
C It provides carboxylate ions.
D It accelerates the reaction with water.

The correct answer is:
It provides carboxylate ions.

Solution:
Aqueous base is used to hydrolyze acid chlorides, and it provides carboxylate ions

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What is the role of ART in assisting infertile couples to have children?

Options:
A Correction of disorders
B Special techniques
C Both A and B
D None of the above

The correct answer is:
Special techniques

Solution:
Where correction of infertility disorders is not possible, couples could be assisted to have children through certain special techniques commonly known as assisted reproductive technologies (ART).

Topic: Biology, Reproductive Health, NEET
What is the role of association areas in the cerebral cortex?

Options:
A Motor functions
B Sensory functions
C Complex functions like intersensory associations, memory and communication
D Myelin sheath formation

The correct answer is:
Complex functions like intersensory associations, memory and communication

Solution:
The association areas in the cerebral cortex are responsible for complex functions like intersensory associations, memory, and communication.

Topic: Biology, Neural Control and Coordination, NEET
What is the role of bacterial, plant or animal cells in recombinant technologies?

Options:
A To extract the desired protein
B To express the foreign gene
C To produce a desirable protein
D To purify the desired protein

The correct answer is:
To express the foreign gene

Solution:
The role of bacterial, plant or animal cells in recombinant technologies is to express the foreign gene.

Topic: Biology, Biotechnology - Principles and Processes, NEET
What is the role of barium sulfate in the production of hydrogen peroxide?

Options:
A To increase the pH of the solution
B To remove excess water
C To act as a catalyst
D To precipitate out and separate from the hydrogen peroxide solution

The correct answer is:
To precipitate out and separate from the hydrogen peroxide solution

Solution:
Barium sulfate formed during the production of hydrogen peroxide acts as an insoluble precipitate, which can be separated from the hydrogen peroxide solution. This separation is necessary to obtain purified hydrogen peroxide.

Topic: Chemistry, Hydrogen, NEET
What is the role of benzene sulphonic acid in the synthesis of phenol?

Options:
A It is a reducing agent.
B It is an intermediate for phenol formation.
C It acts as a catalyst.
D It is an electrophile.

The correct answer is:
It is an intermediate for phenol formation.

Solution:
Benzene sulphonic acid is an intermediate compound formed during the synthesis of phenol from benzene.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What is the role of benzoyl peroxide in addition polymerisation of alkenes?

Options:
A To act as a catalyst.
B To reduce the viscosity of the reaction mixture.
C To increase the molecular weight of the polymer.
D To initiate the polymerization reaction by producing free radicals.

The correct answer is:
To initiate the polymerization reaction by producing free radicals.

Solution:
Correct Option is : (D)
To initiate the polymerization reaction by producing free radicals.

Topic: Chemistry, Polymers, NEET
What is the role of bile in the digestion of fats?

Options:
A It helps to emulsify fats into small micelles
B It helps to convert fats into di- and monoglycerides
C It helps to convert fats into fatty acids
D It helps to convert fats into amino acids

The correct answer is:
It helps to emulsify fats into small micelles

Solution:
Bile, which is released into the small intestine, contains bile salts which help to emulsify fats, breaking them down into small micelles. This makes it easier for lipases to act on the fats and convert them into di- and monoglycerides.

Topic: Biology, Digestion and Absorption, NEET
What is the role of bile salts in the bile?

Options:
A To emulsify fats
B To digest carbohydrates
C To digest nucleic acids
D To activate enzymes

The correct answer is:
To emulsify fats

Solution:
Bile salts are a component of bile that aid in the emulsification of fats. They help to break down large fat droplets into smaller droplets that can be more easily digested by the enzymes in the small intestine.

Topic: Biology, Digestion and Absorption, NEET
What is the role of biodiversity in agriculture?

Options:
A It makes the landscape less sustainable
B It eradicates pests
C It furthers health and sustainability
D It makes the landscape more harmful

The correct answer is:
It furthers health and sustainability

Solution:
A key belief of the organic farmer is that biodiversity furthers health and sustainability. The more variety a landscape has, the more sustainable it is.

Topic: Biology, Microbes in Human Welfare, NEET
What is the role of biotechnology in agriculture?

Options:
A Biotechnology is used to create genetically modified crops for agriculture.
B Biotechnology is used to produce biogas from plant waste.
C Biotechnology is used to treat sewage through the process of activated sludge formation.
D Biotechnology is used to purify proteins and organic compounds.

The correct answer is:
Biotechnology is used to create genetically modified crops for agriculture.

Solution:
Biotechnology has an application in agriculture through the creation of genetically modified crops for agriculture.

Topic: Biology, Biotechnology and Its Applications, NEET
What is the role of biotechnology in agriculture?

Options:
A To produce pest-resistant crops
B To reduce the amount of pesticides used
C To create tailor-made plants for industry purposes
D All of the above

The correct answer is:
All of the above

Solution:
Biotechnology has a range of applications in agriculture, including the production of pest-resistant crops, reducing the amount of pesticides used, and creating tailor-made plants for industry purposes.

Topic: Biology, Biotechnology and Its Applications, NEET
What is the role of biotechnology in making vaccines available?

Options:
A Hindering its availability
B Making older and unsafe vaccines
C Making newer and safer vaccines
D No role

The correct answer is:
Making newer and safer vaccines

Solution:
Biotechnology is at the verge of making available newer and safer vaccines.

Topic: Biology, Human Health and Diseases, NEET
What is the role of biotechnology in waste treatment?

Options:
A Biotechnology is used to produce biogas from plant waste.
B Biotechnology is used to treat sewage through the process of activated sludge formation.
C Biotechnology is used to kill harmful pests through biocontrol.
D Biotechnology is used to purify proteins and organic compounds.

The correct answer is:
Biotechnology is used to treat sewage through the process of activated sludge formation.

Solution:
Microbes have been used for more than a hundred years to treat sewage (waste water) through the process of activated sludge formation and this helps in recycling of water in nature.

Topic: Biology, Biotechnology and Its Applications, NEET
What is the role of bones in the human body?

Options:
A To store fat
B To produce hormones
C To support and provide structure to the body
D To produce blood

The correct answer is:
To support and provide structure to the body

Solution:
Bones play a crucial role in supporting and providing structure to the human body. They also protect delicate organs, store minerals, and produce blood cells.

Topic: Biology, Locomotion and Movement, NEET
What is the role of buds in the stem?

Options:
A Conducting water and minerals
B Storing food
C Generating branches
D Providing protection

The correct answer is:
Generating branches

Solution:
The stem bears buds, which may be terminal or axillary, and these buds eventually generate new branches for the plant. This helps the plant to grow and spread out, allowing it to carry out important processes such as photosynthesis.

Topic: Biology, Morphology of Flowering Plants, NEET
What is the role of buffer solutions when an acid is added to a solution?

Options:
A To react with the acid and neutralize it
B To create a strong acid-base reaction
C To increase the concentration of H+ ions
D To reduce the concentration of OH- ions

The correct answer is:
To react with the acid and neutralize it

Solution:
The paragraph explains that buffer solutions react with added acid to neutralize it, preventing a significant decrease in pH.

Topic: Chemistry, Ionic Equilibrium, NEET
What is the role of bulliform cells in grass leaves?

Options:
A They are responsible for photosynthesis
B They help in prevention of water loss and leaf curling
C They are responsible for the parallel venation in monocot leaves
D They are responsible for the reticulate venation in dicot leaves

The correct answer is:
They help in prevention of water loss and leaf curling

Solution:
Bulliform cells in grass leaves absorb water and when turgid, they expand to expose the leaf surface, and when they are flaccid due to water stress, they curl the leaves inwards to minimise water loss.

Topic: Biology, Anatomy of Flowering Plants, NEET
What is the role of calcium in the normal functioning of the cell membranes?

Options:
A Activates certain enzymes
B Regulates metabolic activities
C Synthesis of cell wall
D Involved in the normal functioning of the cell membranes

The correct answer is:
Involved in the normal functioning of the cell membranes

Solution:
Calcium plays an important role in the normal functioning of the cell membranes.

Topic: Biology, Mineral Nutrition, NEET
What is the role of calcium ions in blood clotting?

Options:
A Inactive
B Not important
C Activates
D Very important

The correct answer is:
Very important

Solution:
Calcium ions play a very important role in blood clotting.

Topic: Biology, Body Fluids and Circulation, NEET
What is the role of calcium ions?

Options:
A They play a role in clotting
B They play a role in lymphatic system
C They are involved in nutrient transport
D None of the above

The correct answer is:
They play a role in clotting

Solution:
Calcium ions play a role in clotting.

Topic: Biology, Body Fluids and Circulation, NEET
What is the role of capillaries and lacteals in the villi?

Options:
A To protect the alimentary canal
B To control the movement of food
C To aid in absorption of nutrients
D To produce hormones

The correct answer is:
To aid in absorption of nutrients

Solution:
Villi are supplied with a network of capillaries and a large lymph vessel called the lacteal. These vessels aid in the absorption of nutrients by providing blood and lymph supply to the villi.

Topic: Biology, Digestion and Absorption, NEET
What is the role of carbon monoxide in the Mond Process?

Options:
A It forms a stable compound with nickel
B It acts as a reducing agent
C It oxidizes nickel
D It stabilizes nickel tetracarbonyl

The correct answer is:
It acts as a reducing agent

Solution:
Carbon monoxide serves as a reducing agent in the Mond Process, facilitating the formation of volatile nickel tetracarbonyl.

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
What is the role of carbonic anhydrase in RBCs?

Options:
A It helps in the formation of HCO₃⁻ and H⁺
B It helps in the formation of CO₂ and H₂O
C It helps in the dissociation of CO₂ from carbamino-haemoglobin
D It helps in the binding of CO₂ with haemoglobin

The correct answer is:
It helps in the binding of CO₂ with haemoglobin

Solution:
RBCs contain a very high concentration of the enzyme, carbonic anhydrase, which helps in the binding of CO₂ with haemoglobin.

Topic: Biology, Breathing and Exchange of Gases, NEET
What is the role of chlorine radicals in ozone depletion in the stratosphere?

Options:
A Chlorine radicals enhance ozone production.
B Chlorine radicals catalyze the breakdown of ozone.
C Chlorine radicals convert ozone into oxygen.
D Chlorine radicals have no impact on ozone.

The correct answer is:
Chlorine radicals catalyze the breakdown of ozone.

Solution:
Chlorine radicals in the stratosphere catalyze the breakdown of ozone, contributing to ozone depletion.

Topic: Chemistry, Environmental Chemistry, NEET
What is the role of citrate synthase in the TCA cycle?

Options:
A To convert citric acid to isocitrate
B To reduce NAD⁺ to NADH + H⁺
C To catalyze the condensation of acetyl group with oxaloacetic acid
D To convert GTP to GDP

The correct answer is:
To catalyze the condensation of acetyl group with oxaloacetic acid

Solution:
The reaction catalysed by citrate synthase results in the condensation of acetyl group with oxaloacetic acid to yield citric acid.

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

Options:
A To oxidise succinyl-CoA
B To reduce NAD⁺ to NADH + H⁺
C To convert GTP to GDP
D To catalyse the condensation of acetyl group with oxaloacetic acid (OAA)

The correct answer is:
To catalyse the condensation of acetyl group with oxaloacetic acid (OAA)

Solution:
The condensation reaction of the TCA cycle is catalysed by the enzyme citrate synthase.

Topic: Biology, Respiration in Plants, NEET
What is the role of concentrated hydrogen halides in the cleavage of ethers?

Options:
A To act as a solvent
B To act as a catalyst
C To provide acidic conditions
D To increase the reaction rate

The correct answer is:
To provide acidic conditions

Solution:
Concentrated hydrogen halides provide acidic conditions in the cleavage of ethers, facilitating the reaction.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET