datavorous/entrance-exam-dataset huggingface dataset:
What is the primary method for preparing sodium carbonate?

Options:
A Haber-Bosch Process
B Solvay Process
C Electrolysis of Sodium Chloride
D Fischer-Tropsch Synthesis

The correct answer is:
Solvay Process

Solution:
Sodium carbonate is generally prepared by the Solvay Process, which involves the precipitation of sodium hydrogencarbonate from the reaction of sodium chloride with ammonium hydrogen carbonate.

Topic: Chemistry, s Block Elements, NEET
What is the primary method for testing molecular chirality in organic molecules?

Options:
A Analyzing color changes
B Drawing two-dimensional structures
C Constructing models and their mirror images
D Performing chemical reactions

The correct answer is:
Constructing models and their mirror images

Solution:
Testing molecular chirality in organic molecules can be done by constructing models and their mirror images.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What is the primary method of polymerization used for the production of polythene (polyethylene)?

Options:
A Step-growth polymerization
B Chain-growth polymerization
C Radical polymerization
D Condensation polymerization

The correct answer is:
Chain-growth polymerization

Solution:
The primary method of polymerization used for the production of polythene (polyethylene) is chain-growth polymerization.

Topic: Chemistry, Polymers, NEET
What is the primary method used in tropical countries like India to obtain common salt?

Options:
A Filtration of underground deposits
B Solar evaporation of sea water
C Chemical synthesis from sodium and chlorine
D Extraction from rock salt mines

The correct answer is:
Solar evaporation of sea water

Solution:
In tropical countries like India, common salt is generally obtained by the evaporation of sea water.

Topic: Chemistry, s Block Elements, NEET
What is the primary nature of boron?

Options:
A Metallic
B Non-metallic
C Semi-metallic
D Metalloid

The correct answer is:
Non-metallic

Solution:
Boron is non-metallic in nature.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
What is the primary outcome of applying the Schrödinger equation to atoms in the quantum mechanical model?

Options:
A The energy of electrons in atoms is quantized.
B The electrons move in well-defined circular orbits.
C The electrons have continuous energy levels.
D The electrons exhibit wave-particle duality.

The correct answer is:
The energy of electrons in atoms is quantized.

Solution:
One of the important features of the quantum-mechanical model of the atom is that the energy of electrons in atoms is quantized, meaning it can only have certain specific values.

Topic: Chemistry, Structure of Atom, NEET
What is the primary process in deriving a systematic name for an organic compound?

Options:
A Identifying the compound's molecular weight
B Identifying the parent hydrocarbon and functional group(s)
C Determining the compound's color
D Determining its melting point

The correct answer is:
Identifying the parent hydrocarbon and functional group(s)

Solution:
A systematic name of an organic compound is generally derived by identifying the parent hydrocarbon and the functional group(s) attached to it.

Topic: Chemistry, General Organic Chemistry, NEET
What is the primary process involved in the production of iron and steels?

Options:
A Oxidation of iron oxides
B Addition of carbon
C Removal of impurities
D Alloying with copper

The correct answer is:
Removal of impurities

Solution:
The production of iron and steels involves the reduction of iron oxides, the removal of impurities, and the addition of carbon and alloying metals.

Topic: Chemistry, d and f Block Elements, NEET
What is the primary product obtained when the sodium salt of benzoic acid is heated with soda lime?

Options:
A Benzene
B Toluene
C Phenol
D Ethyl benzene

The correct answer is:
Benzene

Solution:
When the sodium salt of benzoic acid is heated with soda lime, it undergoes decarboxylation to produce benzene as the primary product.

Topic: Chemistry, Hydrocarbons, NEET
What is the primary product of the reduction of phenol to benzene?

Options:
A Toluene
B Ethylbenzene
C Benzene
D Phenol

The correct answer is:
Benzene

Solution:
The primary product of the reduction of phenol with zinc dust is benzene.

Topic: Chemistry, Hydrocarbons, NEET
What is the primary product of yeast fermentation?

Options:
A CO₂
B Ethanol
C Lactic acid
D Glucose

The correct answer is:
Ethanol

Solution:
In yeast fermentation, the incomplete oxidation of glucose is achieved under anaerobic conditions, resulting in the primary production of ethanol by the enzymes pyruvic acid decarboxylase and alcohol dehydrogenase.

Topic: Biology, Respiration in Plants, NEET
What is the primary product when concentrated sulphuric acid adds to an alkene in the presence of cold conditions?

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

The correct answer is:
Alkyl hydrogen sulfate

Solution:
The primary product of the addition of concentrated sulphuric acid to an alkene under cold conditions is alkyl hydrogen sulfate.

Topic: Chemistry, Hydrocarbons, NEET
What is the primary production in an ecosystem?

Options:
A The rate of organic matter production in photosynthesis
B The rate of new organic matter formation by consumers
C The amount of energy produced by plants
D The rate of biomass production

The correct answer is:
The rate of organic matter production in photosynthesis

Solution:
Primary production is defined as the amount of biomass or organic matter produced per unit area over a time period by plants during photosynthesis.

Topic: Biology, Ecosystem, NEET
What is the primary purpose of a protic acid in alcohol dehydration reactions?

Options:
A To increase acidity
B To provide oxygen
C To facilitate nucleophilic attacks
D To enhance colour

The correct answer is:
To facilitate nucleophilic attacks

Solution:
Protic acids protonates alcohols, making them more susceptible to nucleophilic attacks, which is crucial in alcohol dehydration reactions.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What is the primary purpose of adding carbon to iron in the production of iron and steels?

Options:
A To increase electrical conductivity
B To reduce the production cost
C To improve corrosion resistance
D To enhance hardness and strength

The correct answer is:
To enhance hardness and strength

Solution:
Carbon is added to iron and steels to enhance hardness and strength.

Topic: Chemistry, d and f Block Elements, NEET
What is the primary purpose of aspirin's anti-blood clotting action?

Options:
A To stimulate inflammation
B To induce sleep
C To prevent heart attacks
D To cause addiction

The correct answer is:
To prevent heart attacks

Solution:
Aspirin's anti-blood clotting action is used in the prevention of heart attacks.

Topic: Chemistry, Chemistry in Everyday Life, NEET
What is the primary purpose of chromatography?

Options:
A To mix substances together
B To separate mixtures into their components, purify compounds, and test purity
C To change the color of compounds
D To identify compounds

The correct answer is:
To separate mixtures into their components, purify compounds, and test purity

Solution:
Chromatography is primarily used to separate mixtures into their components, purify compounds, and test the purity of compounds.

Topic: Chemistry, General Organic Chemistry, NEET
What is the primary purpose of chromatography in the purification of organic compounds?

Options:
A To form crystals
B To determine color
C To remove impurities
D To separate components based on their differential migration

The correct answer is:
To separate components based on their differential migration

Solution:
The primary purpose of chromatography is to separate components of a mixture based on their differential migration through a stationary phase.

Topic: Chemistry, General Organic Chemistry, NEET
What is the primary purpose of controlled incineration for waste disposal?

Options:
A Recycling
B Reducing waste volume
C Enhancing waste biodegradability
D Reducing noise pollution

The correct answer is:
Reducing waste volume

Solution:
Controlled incineration is primarily used to reduce the volume of waste and destroy harmful components, making waste disposal more manageable and less harmful to the environment.

Topic: Chemistry, Environmental Chemistry, NEET
What is the primary purpose of culturing garbage with bacterial species in the process of producing electricity in India?

Options:
A To generate oxygen
B To reduce waste volume
C To produce plastic
D To create methane (biogas)

The correct answer is:
To create methane (biogas)

Solution:
Bacterial action is used to convert garbage into methane, commonly known as biogas, which is used to generate electricity. The primary purpose of culturing garbage with bacterial species is to produce methane.

Topic: Chemistry, Environmental Chemistry, NEET
What is the primary purpose of desalination plants in many countries?

Options:
A To produce electricity
B To extract minerals from seawater
C To meet potable water requirements
D To create artificial seawater

The correct answer is:
To meet potable water requirements

Solution:
The paragraph mentions that many countries use desalination plants to meet their potable water requirements, which is the primary purpose of these plants.

Topic: Chemistry, Solutions, NEET
What is the primary purpose of dilute acid in the conversion of cumene hydroperoxide to phenol and acetone?

Options:
A To provide oxygen for the reaction
B To increase the reaction rate
C To prevent side reactions
D To hydrolyze cumene hydroperoxide

The correct answer is:
To hydrolyze cumene hydroperoxide

Solution:
Dilute acid is used to hydrolyze cumene hydroperoxide, leading to the formation of phenol and acetone.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What is the primary purpose of distillation in the purification of organic compounds?

Options:
A Formation of crystals
B Separation of different compounds
C Sublimation of impurities
D Conversion of solids to liquids

The correct answer is:
Separation of different compounds

Solution:
Distillation is primarily used for the separation of different compounds in the purification process.

Topic: Chemistry, General Organic Chemistry, NEET
What is the primary purpose of distillation?

Options:
A To convert liquids into solids
B To separate volatile liquids from nonvolatile impurities
C To dissolve solids in a solvent
D To separate solids from liquids

The correct answer is:
To separate volatile liquids from nonvolatile impurities

Solution:
Distillation is primarily used to separate volatile liquids from nonvolatile impurities.

Topic: Chemistry, General Organic Chemistry, NEET
What is the primary purpose of food preservatives?

Options:
A Enhancing food flavor
B Promoting microbial growth
C Preventing spoilage by inhibiting microbial growth
D Adding nutritive value to food

The correct answer is:
Preventing spoilage by inhibiting microbial growth

Solution:
Food preservatives prevent spoilage of food by prohibiting microbial growth.

Topic: Chemistry, Chemistry in Everyday Life, NEET
What is the primary purpose of hybridisation in chemical bonding?

Options:
A To determine the atomic weight of elements
B To facilitate electron transfer between atoms
C To determine the energy levels of electrons
D To provide a mechanism for bond formation

The correct answer is:
To provide a mechanism for bond formation

Solution:
The primary purpose of hybridisation in chemical bonding is to provide a mechanism for bond formation.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What is the primary purpose of indicating formal charges on atoms in Lewis structures?

Options:
A To represent real charge separation within the molecule.
B To determine molecular geometry.
C To track the valence electrons in the molecule.
D To determine the electronegativity of the atoms.

The correct answer is:
To track the valence electrons in the molecule.

Solution:
Indicating the charges on the atoms in the Lewis structure helps in keeping track of the valence electrons in the molecule.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What is the primary purpose of Kolbe's electrolytic method in organic synthesis?

Options:
A To synthesize alcohols
B To produce carboxylic acids
C To generate alkenes
D To prepare alkanes with specific carbon chain lengths

The correct answer is:
To prepare alkanes with specific carbon chain lengths

Solution:
The primary purpose of Kolbe's electrolytic method in organic synthesis is to prepare alkanes with a particular number of carbon atoms and a specific carbon chain length.

Topic: Chemistry, Hydrocarbons, NEET
What is the primary purpose of nomenclature in Coordination Chemistry?

Options:
A To make names sound impressive
B To confuse students
C To simplify chemical formulas
D To provide a systematic and clear way of naming compounds

The correct answer is:
To provide a systematic and clear way of naming compounds

Solution:
The primary purpose of nomenclature in Coordination Chemistry is to provide a systematic and clear method for naming compounds to avoid confusion and ensure accurate communication.

Topic: Chemistry, Coordination Compounds, NEET
What is the primary purpose of Poly β-hydroxybutyrate – co-β-hydroxy valerate (PHBV) in various applications?

Options:
A PHBV is primarily used for its colorful appearance in packaging.
B PHBV is primarily used as a fuel source.
C PHBV is primarily used for orthopedic devices and controlled drug release.
D PHBV is primarily used as an electrical insulator.

The correct answer is:
PHBV is primarily used for orthopedic devices and controlled drug release.

Solution:
PHBV is used in applications such as orthopedic devices and controlled drug release due to its biodegradable properties and compatibility with biological systems.

Topic: Chemistry, Polymers, NEET
What is the primary purpose of recycling non-biodegradable materials like plastic, glass, and metal scraps?

Options:
A To generate electricity.
B To reduce landfill usage.
C To create art and sculptures.
D To make them biodegradable.

The correct answer is:
To reduce landfill usage.

Solution:
Recycling non-biodegradable materials helps reduce the usage of landfills.

Topic: Chemistry, Environmental Chemistry, NEET
What is the primary purpose of reverse osmosis in desalination?

Options:
A To increase the salt content of seawater
B To provide a source of fresh drinking water
C To purify seawater for swimming
D To create artificial seawater

The correct answer is:
To provide a source of fresh drinking water

Solution:
Reverse osmosis in desalination is primarily used to provide a source of fresh drinking water by removing salt and impurities from seawater.

Topic: Chemistry, Solutions, NEET
What is the primary purpose of sublimation in purification?

Options:
A To change solids into liquids
B To remove impurities from solids
C To change solids into vapors
D To remove impurities from liquids

The correct answer is:
To change solids into vapors

Solution:
The primary purpose of sublimation in purification is to change solid substances into vapors.

Topic: Chemistry, General Organic Chemistry, NEET
What is the primary purpose of synthetic antihistamine drugs like brompheniramine and terfenadine?

Options:
A To increase histamine levels
B To neutralize histamine
C To enhance histamine's effects
D To block histamine's action

The correct answer is:
To block histamine's action

Solution:
Synthetic antihistamine drugs like brompheniramine and terfenadine act by interfering with the natural action of histamine.

Topic: Chemistry, Chemistry in Everyday Life, NEET
What is the primary purpose of the formula of a compound in Coordination Chemistry?

Options:
A To provide detailed structural information
B To confuse chemists
C To list ligands in random order
D To provide basic constitution information concisely

The correct answer is:
To provide basic constitution information concisely

Solution:
The formula of a compound in Coordination Chemistry serves the primary purpose of providing basic constitution information in a concise manner.

Topic: Chemistry, Coordination Compounds, NEET
What is the primary purpose of the -OH group in phenols during electrophilic substitution reactions?

Options:
A To stabilise the negative charge on the benzene ring
B To withdraw electrons from the ring
C To activate the benzene ring and direct the incoming group
D To form a covalent bond with the incoming electrophile

The correct answer is:
To activate the benzene ring and direct the incoming group

Solution:
The -OH group activates the benzene ring and directs the incoming group to specific positions due to resonance effects.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What is the primary purpose of the oleum in the synthesis of phenol from benzene?

Options:
A To provide a source of oxygen
B To increase the reaction rate
C To prevent side reactions
D To enhance the reaction's selectivity

The correct answer is:
To increase the reaction rate

Solution:
Oleum is used to increase the reaction rate during the sulphonation of benzene, allowing for the efficient formation of benzene sulphonic acid.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What is the primary purpose of treating calcium carbide with water in industrial ethyne production?

Options:
A To obtain calcium oxide
B To form calcium hydroxide
C To release carbon monoxide gas
D To generate heat energy

The correct answer is:
To form calcium hydroxide

Solution:
Treating calcium carbide (CaC2) with water (H2O) results in the formation of calcium hydroxide (Ca(OH)2) and ethyne (C2H2). The primary purpose of this reaction is to produce calcium hydroxide as a byproduct, and ethyne is the desired product.

Topic: Chemistry, Hydrocarbons, NEET
What is the primary purpose of using a froth floatation process?

Options:
A To control humidity
B To remove colouring matter
C To separate inert gases
D To concentrate low-grade sulphide ore

The correct answer is:
To concentrate low-grade sulphide ore

Solution:
The paragraph indicates that the froth floatation process is used for concentrating low-grade sulphide ore by separating it from silica and other earthy matter.

Topic: Chemistry, Surface Chemistry, NEET
What is the primary purpose of using chromic acid in the oxidation of phenol?

Options:
A To increase the reaction rate
B To provide a source of oxygen
C To prevent side reactions
D To enhance the reaction's selectivity

The correct answer is:
To provide a source of oxygen

Solution:
Chromic acid is used to provide oxygen for the oxidation of phenol.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What is the primary purpose of using ethanoic acid as a solvent in the bromination of anisole?

Options:
A To increase the reaction rate
B To provide a source of bromine
C To stabilise the anisole molecule
D To prevent side reactions

The correct answer is:
To prevent side reactions

Solution:
Ethanoic acid is used as a solvent to minimise side reactions and improve the selectivity of the bromination reaction.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What is the primary purpose of using low temperature and high pressure in the Contact Process for sulfuric acid manufacture?

Options:
A To reduce the cost of production
B To increase the reaction rate
C To maximize the yield of SO3
D To produce pure H2SO4

The correct answer is:
To maximize the yield of SO3

Solution:
Using low temperature and high pressure in the Contact Process is primarily aimed at maximizing the yield of SO3.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What is the primary purpose of using oleum in the synthesis of phenol from benzene?

Options:
A To provide a source of oxygen
B To increase the reaction rate
C To prevent side reactions
D To enhance the reaction's selectivity

The correct answer is:
To increase the reaction rate

Solution:
Oleum is used to increase the reaction rate during the sulphonation of benzene, allowing for the efficient formation of benzene sulfonic acid.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What is the primary purpose of vulcanization in rubber processing?

Options:
A To increase water absorption capacity
B To make rubber soluble in non-polar solvents
C To improve the physical properties of rubber
D To reduce the elasticity of rubber

The correct answer is:
To improve the physical properties of rubber

Solution:
The primary purpose of vulcanization is to enhance the physical properties of rubber, making it less susceptible to temperature variations and chemical attacks.

Topic: Chemistry, Polymers, NEET
What is the primary reason for adding silica in the process of extraction of copper?

Options:
A To produce SO2
B To form copper
C To create FeSiO3
D To convert FeO

The correct answer is:
To create FeSiO3

Solution:
Silica (SiO2) reacts with FeO to produce iron silicate (FeSiO3) in the convertor.

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
What is the primary reason for breeding crop cultivars that are resistant to diseases?

Options:
A To reduce the use of fungicides and bacteriocides
B To increase the number of crops produced
C To increase the size of crops
D To improve the quality of crops

The correct answer is:
To reduce the use of fungicides and bacteriocides

Solution:
Breeding and development of cultivars resistant to disease enhances food production and helps reduce the dependence on use of fungicides and bacteriocides.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
What is the primary reason for Ce(IV) being a good analytical reagent?

Options:
A It has a noble gas configuration.
B It is a strong reducing agent.
C It has a high Eo value.
D It has a slow reaction rate with water.

The correct answer is:
It has a slow reaction rate with water.

Solution:
The paragraph mentions that Ce(IV) is a good analytical reagent because the reaction rate with water is very slow.

Topic: Chemistry, d and f Block Elements, NEET
What is the primary reason for comparing the energy released by combustion of different fuels in terms of mole, mass, and volume?

Options:
A To determine the most efficient fuel
B To assess the environmental impact of combustion
C To calculate the cost-effectiveness of fuels
D To compare the safety of different fuels

The correct answer is:
To determine the most efficient fuel

Solution:
Comparing the energy released by combustion of different fuels in terms of mole, mass, and volume allows us to determine the most efficient fuel in terms of energy production.

Topic: Chemistry, Hydrogen, NEET
What is the primary reason for defining the internal energy U as a state function?

Options:
A To simplify calculations
B To account for path-dependent work
C To ensure energy conservation
D To facilitate heat exchange

The correct answer is:
To account for path-dependent work

Solution:
Defining internal energy as a state function allows us to account for path-independent work in thermodynamics.

Topic: Chemistry, Thermodynamics (C), NEET
What is the primary reason for greater repulsion between lone pairs of electrons?

Options:
A Greater electron density of lone pairs
B Greater electron density of bonding pairs
C Stronger attraction of bonding pairs to the central atom
D Greater repulsion between bond pairs

The correct answer is:
Greater electron density of lone pairs

Solution:
The primary reason for greater repulsion between lone pairs of electrons is the greater electron density associated with lone pairs.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What is the primary reason for lithium's high negative Eo value and strong reducing power?

Options:
A Large ion size
B Low ionization enthalpy
C High hydration enthalpy
D High electronegativity

The correct answer is:
High hydration enthalpy

Solution:
Lithium's high negative Eo value and strong reducing power are primarily due to its high hydration enthalpy, which is a result of its small ion size and strong electrostatic attraction with water molecules. This makes lithium an effective reducing agent.

Topic: Chemistry, s Block Elements, NEET