datavorous/entrance-exam-dataset huggingface dataset:
What is the primary role of functional groups provided by enzymes in chemical reactions?

Options:
A To transport substrates to the active site
B To stabilize the enzyme structure
C To attack the substrate and carry out chemical reactions
D To bind covalently with substrates

The correct answer is:
To attack the substrate and carry out chemical reactions

Solution:
The second function of an enzyme is to provide functional groups that will attack the substrate and carry out chemical reactions.

Topic: Chemistry, Chemistry in Everyday Life, NEET
What is the primary role of impurities in sublimation?

Options:
A To enhance the sublimation process
B To prevent sublimation from occurring
C To change the color of the compound
D To facilitate crystallization

The correct answer is:
To prevent sublimation from occurring

Solution:
Impurities in sublimation often do not sublime and act as obstacles, preventing the pure compound from subliming, thus aiding in the separation.

Topic: Chemistry, General Organic Chemistry, NEET
What is the primary role of oxygen in food spoilage?

Options:
A Oxygen enhances food flavor
B Oxygen promotes microbial growth in food
C Oxygen accelerates chemical reactions that lead to food spoilage
D Oxygen adds nutritive value to food

The correct answer is:
Oxygen accelerates chemical reactions that lead to food spoilage

Solution:
Oxygen in food accelerates chemical reactions that lead to food spoilage.

Topic: Chemistry, Chemistry in Everyday Life, NEET
What is the primary role of sodium hydrogencarbonate as an antiseptic for skin infections?

Options:
A Killing bacteria on the skin's surface
B Providing moisture to the skin
C Reducing inflammation on the skin
D Exfoliating dead skin cells

The correct answer is:
Killing bacteria on the skin's surface

Solution:
Sodium hydrogen carbonate can act as a mild antiseptic for skin infections by killing bacteria on the skin's surface.

Topic: Chemistry, s Block Elements, NEET
What is the primary role of the carboxyl group in electrophilic substitution reactions of aromatic carboxylic acids?

Options:
A Activation of the ring
B Deactivation of the ring
C Ortho-directing effect
D Para-directing effect

The correct answer is:
Deactivation of the ring

Solution:
The carboxyl group in aromatic carboxylic acids primarily deactivates the aromatic ring in electrophilic substitution reactions.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What is the primary role of the reagent in an organic reaction?

Options:
A To supply carbon to the new bond
B To form intermediates
C To break covalent bonds
D To create multiple products

The correct answer is:
To break covalent bonds

Solution:
The reagent as the other reactant in an organic reaction and does not mention its role in supplying carbon to the new bond. Instead, it mentions that a covalent bond is broken by the reagent.

Topic: Chemistry, General Organic Chemistry, NEET
What is the primary role of zinc in the dehalogenation of vicinal dihalides?

Options:
A To act as a reducing agent
B To act as a catalyst
C To form a complex with the halogens
D To provide additional carbon atoms

The correct answer is:
To act as a reducing agent

Solution:
Zinc acts as a reducing agent in the dehalogenation of vicinal dihalides by facilitating the removal of halogen atoms.

Topic: Chemistry, Hydrocarbons, NEET
What is the primary root in monocotyledonous plants?

Options:
A A large number of roots
B Roots that arise from the radicle
C Short lived root
D Adventitious roots

The correct answer is:
Short lived root

Solution:
In monocotyledonous plants, the primary root is short lived and is replaced by a large number of roots constituting the fibrous root system.

Topic: Biology, Morphology of Flowering Plants, NEET
What is the primary sludge?

Options:
A The supernatant
B The sediment
C The settling solids
D The effluent

The correct answer is:
The settling solids

Solution:
All solids that settle form the primary sludge, and the supernatant forms the effluent.

Topic: Biology, Microbes in Human Welfare, NEET
What is the primary source of all food on earth?

Options:
A Animals
B Plants
C Sunlight
D Photosynthesis

The correct answer is:
Photosynthesis

Solution:
Photosynthesis is the primary source of all food on earth as it transforms light energy into chemical energy that is used by all living forms.

Topic: Biology, Photosynthesis in Higher Plants, NEET
What is the primary source of carbon in the formation of calcium carbide?

Options:
A Calcium oxide
B Carbon dioxide
C Coke
D Calcium hydroxide

The correct answer is:
Coke

Solution:
Coke serves as the primary source of carbon in the formation of calcium carbide (CaC2) when it reacts with quick lime.

Topic: Chemistry, Hydrocarbons, NEET
What is the primary source of chemical energy in thermal power plants?

Options:
A Water
B Fossil fuels
C High-pressure steam
D Galvanic cells

The correct answer is:
Fossil fuels

Solution:
Production of electricity by thermal plants is not a very efficient method and is a major source of pollution. In such plants, the chemical energy (heat of combustion) of fossil fuels (coal, gas or oil) is first used for converting water into high pressure steam.

Topic: Chemistry, Electrochemistry, NEET
What is the primary source of fluorine in nature?

Options:
A Sea water
B Soil
C Fluorides
D Seaweeds

The correct answer is:
Fluorides

Solution:
The primary source of fluorine in nature is in the form of insoluble fluorides, such as fluorspar (CaF2), cryolite (Na3AlF6), and fluoroapatite (3Ca3(PO4)2.CaF2).

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What is the primary source of heat energy that causes the casing of a rocket in flight to burn up due to friction?

Options:
A External heat source
B Rocket's kinetic energy
C Chemical reaction within the rocket
D Sun's radiation

The correct answer is:
Rocket's kinetic energy

Solution:
Correct Option is : (B)
Rocket's kinetic energy

Topic: Chemistry, Work Power Energy, NEET
What is the primary source of hydrogen in plant and animal tissues?

Options:
A Hydrides
B Hydrocarbons
C Proteins
D Carbohydrates

The correct answer is:
Carbohydrates

Solution:
The paragraph mentions that hydrogen occurs in plant and animal tissues in carbohydrates, among other compounds.

Topic: Chemistry, Hydrogen, NEET
What is the primary source of iodine found in seaweeds?

Options:
A Sodium chloride
B Sodium bromide
C Sodium iodate
D Sodium fluoride

The correct answer is:
Sodium iodate

Solution:
Seaweeds contain iodine in the form of sodium iodate, which is one of the sources of iodine.**

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What is the primary source of lactose?

Options:
A Fruits and vegetables.
B Grains and cereals.
C Milk and dairy products.
D Meat and seafood.

The correct answer is:
Milk and dairy products.

Solution:
Lactose is commonly found in milk, making milk and dairy products its primary source.

Topic: Chemistry, Biomolecules, NEET
What is the primary source of lead contamination in drinking water?

Options:
A Industrial pollution
B Agricultural runoff
C Lead pipes used for water transportation
D Natural groundwater minerals

The correct answer is:
Lead pipes used for water transportation

Solution:
Lead contamination in drinking water primarily occurs when lead pipes are used to transport water. It leaches into the water supply from these pipes, leading to elevated lead levels.

Topic: Chemistry, Environmental Chemistry, NEET
What is the primary source of pollution in point source pollution?

Options:
A Natural processes
B Human activities
C Volcanic eruptions
D Wildlife activities

The correct answer is:
Human activities

Solution:
Point source pollution primarily originates from human activities, such as industrial and municipal discharges.

Topic: Chemistry, Environmental Chemistry, NEET
What is the primary source of sulphur in organic materials like proteins, garlic, and eggs?

Options:
A Sulphates
B Sulphides
C Elemental sulphur
D Hydrogen sulphide

The correct answer is:
Elemental sulphur

Solution:
The paragraph mentions that organic materials like proteins, garlic, and eggs contain sulphur, which is primarily in the form of elemental sulphur.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What is the primary source of tropospheric pollution?

Options:
A Natural volcanic eruptions.
B Human activities like burning fossil fuels and industrial emissions.
C Biological decay processes.
D Oceanic emissions.

The correct answer is:
Human activities like burning fossil fuels and industrial emissions.

Solution:
Correct Option is : (B)
Human activities like burning fossil fuels and industrial emissions.

Topic: Chemistry, Environmental Chemistry, NEET
What is the primary step towards reproductive health?

Options:
A Providing medical facilities
B Improved health facilities
C Counselling and creating awareness
D Population growth

The correct answer is:
Counselling and creating awareness

Solution:
Counselling and creating awareness among people about reproductive organs, adolescence and associated changes, safe and hygienic sexual practices, sexually transmitted infections (STIs) including AIDS, etC), is the primary step towards reproductive health.

Topic: Biology, Reproductive Health, NEET
What is the primary step towards reproductive health?

Options:
A Providing medical facilities and care
B Counselling and creating awareness
C Improved health facilities and better living conditions
D Propagation of contraceptive methods

The correct answer is:
Counselling and creating awareness

Solution:
Counselling and creating awareness among people about reproductive organs, adolescence and associated changes, safe and hygienic sexual practices, sexually transmitted infections (STIs) including AIDS, etc, is the primary step towards reproductive health.

Topic: Biology, Reproductive Health, NEET
What is the primary strength of the VSEPR Theory?

Options:
A Predicting the geometry of all molecules accurately
B Accurately predicting the geometry of compounds of s-block elements
C Accurately predicting the geometry even when energy differences are large
D Predicting the geometry of a large number of molecules, especially p-block compounds, accurately

The correct answer is:
Predicting the geometry of a large number of molecules, especially p-block compounds, accurately

Solution:
The VSEPR Theory is able to predict the geometry of a large number of molecules, especially compounds of p-block elements, accurately.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What is the primary structural difference between starch and cellulose?

Options:
A Starch has a linear structure, while cellulose has a branched structure.
B Starch consists of glucose monomers, while cellulose consists of fructose monomers.
C Starch is found in animals, while cellulose is found in plants.
D Starch has an alpha glucose linkage, while cellulose has a beta glucose linkage.

The correct answer is:
Starch has an alpha glucose linkage, while cellulose has a beta glucose linkage.

Solution:
The primary structural difference between starch and cellulose is the type of glucose linkage they have.

Topic: Chemistry, Biomolecules, NEET
What is the primary structure of fibrous proteins determined by?

Options:
A Hydrophobic interactions
B Sequence of amino acids
C Tertiary structure
D Quaternary structure

The correct answer is:
Sequence of amino acids

Solution:
The primary structure of proteins, including fibrous proteins, is determined by the sequence of amino acids.

Topic: Chemistry, Biomolecules, NEET
What is the primary structure of maltose composed of?

Options:
A Two a-D-fructose units
B Two a-D-glucose units
C Two sucrose units
D Two lactose units

The correct answer is:
Two a-D-glucose units

Solution:
Maltose is composed of two a-D-glucose units.

Topic: Chemistry, Biomolecules, NEET
What is the primary term used to describe polymers like natural rubber that possess elastic properties?

Options:
A Thermoplastic polymers
B Elastomeric polymers
C Linear polymers
D Crosslinked polymers

The correct answer is:
Elastomeric polymers

Solution:
Polymers like natural rubber that exhibit elastic properties are often referred to as elastomeric polymers.

Topic: Chemistry, Polymers, NEET
What is the primary threat to the ozone layer posed by nitrogen oxides (NOx) from supersonic jet aeroplanes?

Options:
A Depletion of ozone due to the formation of nitrogen dioxide (NO2)
B Rapid decomposition of ozone into nitrogen and oxygen
C The release of greenhouse gases into the atmosphere
D Formation of ozone holes over polar regions

The correct answer is:
Depletion of ozone due to the formation of nitrogen dioxide (NO2)

Solution:
Nitrogen oxides (especially nitrogen dioxide, NO2) rapidly react with ozone in the upper atmosphere, leading to the depletion of the ozone layer.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What is the primary transformation that occurs in the Cannizzaro reaction?

Options:
A Reduction of aldehydes to alcohols
B Oxidation of aldehydes to carboxylic acid salts
C Conversion of aldehydes to ketones
D Formation of aldehyde dimers

The correct answer is:
Oxidation of aldehydes to carboxylic acid salts

Solution:
The primary transformation in the Cannizzaro reaction is the oxidation of aldehydes to carboxylic acid salts.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What is the primary use of a dry cell?

Options:
A Powering high-current devices
B Powering low-current devices like transistors and clocks
C Charging other batteries
D Generating light

The correct answer is:
Powering low-current devices like transistors and clocks

Solution:
The dry cell is commonly used in transistors and clocks, which are low-current devices.

Topic: Chemistry, Electrochemistry, NEET
What is the primary use of argon in high-temperature metallurgical processes?

Options:
A In gas-cooled nuclear reactors
B As a fuel for welding
C To provide an inert atmosphere in high-temperature metallurgical processes
D For medical imaging

The correct answer is:
To provide an inert atmosphere in high-temperature metallurgical processes

Solution:
Argon is primarily used to provide an inert atmosphere in high-temperature metallurgical processes such as arc welding of metals or alloys.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What is the primary use of carbon black?

Options:
A Making jewelry
B Making batteries
C As a filler in automobile tires
D In industrial electrolysis

The correct answer is:
As a filler in automobile tires

Solution:
Carbon black is used as a filler in automobile tires.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
What is the primary use of dihydrogen in the synthesis of ammonia?

Options:
A Production of hydrogen chloride
B Manufacturing vanaspati fat
C Making nitric acid and nitrogenous fertilizers
D Rocket fuel for space research

The correct answer is:
Making nitric acid and nitrogenous fertilizers

Solution:
The largest single use of dihydrogen is in the synthesis of ammonia, which is then used in the manufacture of nitric acid and nitrogenous fertilizers.

Topic: Chemistry, Hydrogen, NEET
What is the primary use of Equanil?

Options:
A Relieving tension
B Controlling depression and hypertension
C Inducing sleep
D Enhancing memory

The correct answer is:
Controlling depression and hypertension

Solution:
Equanil is used in controlling depression and hypertension.

Topic: Chemistry, Chemistry in Everyday Life, NEET
What is the primary use of ethanoic acid in the food industry?

Options:
A Textile dyeing
B Leather tanning
C Food preservation
D Perfumery

The correct answer is:
Food preservation

Solution:
Ethanoic acid is commonly used in the food industry for food preservation.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What is the primary use of heavy water in nuclear reactors?

Options:
A To generate electricity
B To cool down the reactor
C To moderate the nuclear reaction
D To shield against radiation

The correct answer is:
To moderate the nuclear reaction

Solution:
Heavy water is extensively used as a moderator in nuclear reactors to slow down and control the nuclear reaction.

Topic: Chemistry, Hydrogen, NEET
What is the primary use of lanthanoids?

Options:
A Production of jewelry
B Production of electronic devices
C Production of alloy steels for plates and pipes
D Production of ceramics

The correct answer is:
Production of alloy steels for plates and pipes

Solution:
The best single use of the lanthanoids is for the production of alloy steels for plates and pipes.

Topic: Chemistry, d and f Block Elements, NEET
What is the primary use of lime in the tanning industry?

Options:
A Dyeing leather
B Softening hides
C Removing hair from hides
D Preserving leather

The correct answer is:
Removing hair from hides

Solution:
Lime is primarily used in the tanning industry for removing hair from hides.

Topic: Chemistry, s Block Elements, NEET
What is the primary use of mischmetall in magnesium-based alloys?

Options:
A Bullet production
B Jewelry making
C Aircraft manufacturing
D Electronics

The correct answer is:
Bullet production

Solution:
A good deal of mischmetall is used in Mg-based alloy to produce bullets, shell, and lighter flint.

Topic: Chemistry, d and f Block Elements, NEET
What is the primary use of MnO2?

Options:
A Pigment industry
B Steel production
C Battery manufacturing
D Photographic industry

The correct answer is:
Battery manufacturing

Solution:
MnO2 is used for dry battery cells.

Topic: Chemistry, d and f Block Elements, NEET
What is the primary use of Plaster of Paris in the medical industry?

Options:
A As a construction material
B As a paint additive
C For casting statues
D For immobilizing fractures

The correct answer is:
For immobilizing fractures

Solution:
Plaster of Paris is commonly used in the medical industry for immobilizing bone fractures.

Topic: Chemistry, s Block Elements, NEET
What is the primary use of polyacrylonitrile (PAN)?

Options:
A Substitute for cotton in textiles
B Substitute for wool in textiles
C Substitute for silk in textiles
D Substitute for linen in textiles

The correct answer is:
Substitute for wool in textiles

Solution:
Polyacrylonitrile (PAN) is used as a substitute for wool in making commercial fibers, such as orlon or acrilan.

Topic: Chemistry, Polymers, NEET
What is the primary use of polythene and polypropene?

Options:
A Construction materials
B Food additives
C Plastic packaging and manufacturing
D Fuel production

The correct answer is:
Plastic packaging and manufacturing

Solution:
Polythene and polypropene are commonly used in the manufacturing of plastic bags, bottles, dishes, toys, and various other plastic products.

Topic: Chemistry, Hydrocarbons, NEET
What is the primary use of potassium dichromate?

Options:
A Preparation of chromate ions
B Preparation of leather
C Preparation of azo compounds
D Volumetric analysis

The correct answer is:
Preparation of azo compounds

Solution:
Potassium dichromate is a very important chemical used in the leather industry and as an oxidant for the preparation of many azo compounds.

Topic: Chemistry, d and f Block Elements, NEET
What is the primary use of potassium permanganate in analytical chemistry?

Options:
A As a reducing agent
B As a bleaching agent
C As an oxidizing agent
D As a solvent

The correct answer is:
As an oxidizing agent

Solution:
Potassium permanganate is used as a favourite oxidant in preparative organic chemistry.

Topic: Chemistry, d and f Block Elements, NEET
What is the primary use of potassium permanganate in preparative organic chemistry?

Options:
A Reducing agent
B Bleaching agent
C Acid catalyst
D Solvent

The correct answer is:
Bleaching agent

Solution:
Potassium permanganate is used as a favorite oxidant in preparative organic chemistry and for the bleaching of wool, cotton, silk, and other textile fibres.

Topic: Chemistry, d and f Block Elements, NEET
What is the primary use of sodium carbonate in water treatment?

Options:
A Disinfection
B pH adjustment
C Filtration
D Sedimentation

The correct answer is:
pH adjustment

Solution:
Sodium carbonate is used in water treatment primarily for pH adjustment to make water less acidic.

Topic: Chemistry, s Block Elements, NEET
What is the primary use of specially precipitated calcium carbonate?

Options:
A Building material
B High-quality paper manufacturing
C Antacid
D Toothpaste abrasive

The correct answer is:
High-quality paper manufacturing

Solution:
Specially precipitated calcium carbonate is extensively used in the manufacture of high-quality paper.

Topic: Chemistry, s Block Elements, NEET
What is the primary use of the Wurtz reaction in organic chemistry?

Options:
A To prepare primary alcohols
B To synthesize alkyl halides
C To convert alkenes to alkynes
D To prepare higher alkanes

The correct answer is:
To prepare higher alkanes

Solution:
The Wurtz reaction is primarily used in organic chemistry to prepare higher alkanes containing an even number of carbon atoms.

Topic: Chemistry, Hydrocarbons, NEET
What is the prime goal to reduce waste generation?

Options:
A To increase the use of non-biodegradable products
B To reduce the use of non-biodegradable products
C To increase the use of biodegradable products
D To reduce the use of biodegradable products

The correct answer is:
To reduce the use of non-biodegradable products

Solution:
The prime goal to reduce waste generation should be to reduce the use of non-biodegradable products.

Topic: Biology, Environmental Issues, NEET
What is the principal element in the solar atmosphere?

Options:
A Helium
B Carbon
C Hydrogen
D Oxygen

The correct answer is:
Hydrogen

Solution:
The paragraph mentions that hydrogen is the principal element in the solar atmosphere.

Topic: Chemistry, Hydrogen, NEET
What is the principal quantum number, and what does it determine for an atomic orbital?

Options:
A It is a negative integer, and it determines the orbital shape.
B It is a positive integer, and it determines the orbital size and energy.
C It is a fractional number, and it determines the orbital's color.
D It is a complex number, and it determines the orbital's orientation.

The correct answer is:
It is a positive integer, and it determines the orbital size and energy.

Solution:
The principal quantum number 'n' is a positive integer (1, 2, 3, ...) that determines the size and, to a large extent, the energy of an atomic orbital. For hydrogen atoms and hydrogen-like species, the energy and size of the orbital depend only on the value of 'n.'

Topic: Chemistry, Structure of Atom, NEET
What is the principal Quantum number for the outer electron of Xe ?

Options:
A 3
B 4
C 5
D 6

The correct answer is:
4

Solution:
Correct Option is : 2
4

Topic: Chemistry, Structure of Atom, NEET
What is the principle and method of softening of hard water by synthetic ion-exchange resins?

Options:
A The principle of the method is to exchange the ions (cation and anion both) that form the salts responsible for hardness in water.
B The method involves adding a chemical softening agent to precipitate hardness ions from water.
C The principle is to boil hard water to remove minerals.
D The method involves passing hard water through a filter to physically remove hardness ions.

The correct answer is:
The principle of the method is to exchange the ions (cation and anion both) that form the salts responsible for hardness in water.

Solution:
Correct Option is : (A)
The principle of the method is to exchange the ions (cation and anion both) that form the salts responsible for hardness in water.

Topic: Chemistry, Hydrogen, NEET
What is the principle behind column chromatography?

Options:
A Separation of compounds based on their color
B Separation of compounds based on their boiling points
C Separation of compounds based on differential adsorption
D Separation of compounds based on their density

The correct answer is:
Separation of compounds based on differential adsorption

Solution:
Column chromatography involves the separation of compounds based on their differential adsorption on an adsorbent.

Topic: Chemistry, General Organic Chemistry, NEET