datavorous/entrance-exam-dataset huggingface dataset:
What type of plants have both male and female reproductive structures in the same plant?

Options:
A Bisexual plants
B Unisexual plants
C Homothallic plants
D Heterothallic plants

The correct answer is:
Bisexual plants

Solution:
Bisexual plants are also referred to as monoecious plants, and they have both male and female reproductive structures in the same plant.

Topic: Biology, Reproduction in Organisms, NEET
What type of plants have reproductive structures on different plants?

Options:
A Bisexual plants
B Unisexual plants
C Homothallic plants
D Heterothallic plants

The correct answer is:
Unisexual plants

Solution:
Unisexual plants are also referred to as dioecious plants, and they have reproductive structures on different plants.

Topic: Biology, Reproduction in Organisms, NEET
What type of plastid contains chlorophyll and carotenoid pigments which are responsible for trapping light energy essential for photosynthesis?

Options:
A Chloroplasts
B Chromoplasts
C Leucoplasts
D Amyloplasts

The correct answer is:
Chloroplasts

Solution:
Chloroplasts contain chlorophyll and carotenoid pigments which are responsible for trapping light energy essential for photosynthesis.

Topic: Biology, Cell - The Unit of Life, NEET
What type of pollination involves transfer of pollen grains from anther to stigma of a different plant?

Options:
A Autogamy
B Geitonogamy
C Xenogamy
D Cross-pollination

The correct answer is:
Xenogamy

Solution:
Xenogamy involves the transfer of pollen grains from anther to the stigma of a different plant. It is the only type of pollination which brings genetically different types of pollen grains to the stigma during pollination.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
What type of pollination occurs in autogamy?

Options:
A Cross-pollination
B Self-pollination
C Cleistogamous pollination
D Chasmogamous pollination

The correct answer is:
Self-pollination

Solution:
Autogamy is a type of pollination in which the transfer of pollen grains is achieved within the same flower. This type of pollination is referred to as self-pollination.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
What type of pollination takes place in Vallisneria?

Options:
A Pollination occurs in submerged condition by water
B Flowers emerge above surface of water and pollination occurs by insects
C Flowers emerge above water surface and pollen is carried by wind
D Male flowers are carried by water currents to female flowers at the surface of water

The correct answer is:
Male flowers are carried by water currents to female flowers at the surface of water

Solution:
Vallisneria is a water pollinated plant. In Vallisneria, the female flowers reach the surface of water by the long stalk and the male flowers or pollen grains are released on to the surface of water. They are carried passively by water currents to female flowers at surface of water.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET, NEET 2019 (Odisha)
What type of polymer is formed by the condensation polymerization of melamine and formaldehyde?

Options:
A Polyamide
B Polyester
C Melamine-formaldehyde polymer
D Polyacrylonitrile

The correct answer is:
Melamine-formaldehyde polymer

Solution:
The condensation polymerization of melamine and formaldehyde results in the formation of melamine-formaldehyde polymer.

Topic: Chemistry, Polymers, NEET
What type of polymer is polythene?

Options:
A Thermosetting polymer
B Thermoplastic polymer
C Elastomer
D Copolymer

The correct answer is:
Thermoplastic polymer

Solution:
Polythene is a thermoplastic polymer because it can repeatedly soften on heating and harden on cooling.

Topic: Chemistry, Polymers, NEET
What type of polymer is represented by the following segment?

Options:
A Polyamide
B Polyester
C Polyolefin
D Polyethylene

The correct answer is:
Polyester

Solution:
The given segment has the ester linkage, -C||O-O- , therefore, the polymer is a polyester.
For example dacron.

Topic: Chemistry, Polymers, NEET
What type of polymerization process is used to produce neoprene?

Options:
A Condensation polymerization
B Chain growth polymerization
C Step growth polymerization
D Copolymerization

The correct answer is:
Chain growth polymerization

Solution:
Neoprene is produced through free radical chain growth polymerization of chloroprene.

Topic: Chemistry, Polymers, NEET
What type of polymerization results in the formation of polyacetylene, a high molecular weight polyene with repeating units of (CH = CH – CH = CH)?

Options:
A Linear polymerization
B Cyclic polymerization
C Cross-link polymerization
D Branched polymerization

The correct answer is:
Linear polymerization

Solution:
Polyacetylene is formed through linear polymerization of ethyne, which results in a high molecular weight polymer with a repeating unit of (CH = CH – CH = CH).

Topic: Chemistry, Hydrocarbons, NEET
What type of potential is generated in the post-synaptic neuron as a result of neurotransmitter binding to specific receptors?

Options:
A A new potential
B An electrical current
C An inhibitory potential
D An excitatory potential

The correct answer is:
An excitatory potential

Solution:
The new potential developed in the post-synaptic neuron as a result of neurotransmitter binding to specific receptors may be either excitatory or inhibitory.

Topic: Biology, Neural Control and Coordination, NEET
What type of process occurs in a bomb calorimeter?

Options:
A Adiabatic process
B Isothermal process
C Isobaric process
D Isochoric process

The correct answer is:
Isochoric process

Solution:
In a bomb calorimeter, the process occurs at constant volume, which is referred to as an isochoric process.

Topic: Chemistry, Thermodynamics (C), NEET
What type of product is typically formed when alkenes undergo oxidation with acidic potassium permanganate in the presence of water?

Options:
A Alcohols
B Ketones
C Carboxylic acids
D Alkanes

The correct answer is:
Alcohols

Solution:
Alkenes undergoing oxidation with acidic potassium permanganate in the presence of water typically form alcohols as the products.

Topic: Chemistry, Hydrocarbons, NEET
What type of products are typically obtained in cross aldol condensation?

Options:
A Aldehydes only
B Ketones only
C A mixture of aldehydes and ketones
D Ethers

The correct answer is:
A mixture of aldehydes and ketones

Solution:
Cross aldol condensation typically results in a mixture of aldehydes and ketones as products.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What type of properties are related to the metallic and non-metallic character of elements?

Options:
A Color properties
B Magnetic properties
C Reducing and oxidizing properties
D Density properties

The correct answer is:
Reducing and oxidizing properties

Solution:
The trend in metallic and non-metallic character can be related to their reducing and oxidizing properties.

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
What type of proteins are produced by B-lymphocytes in response to pathogens in our blood?

Options:
A Interferons
B Antibodies
C Light chains
D Heavy chains

The correct answer is:
Antibodies

Solution:
B-lymphocytes produce an army of proteins in response to pathogens in our blood to fight them. These proteins are called antibodies.

Topic: Biology, Human Health and Diseases, NEET
What type of proteins form large pores in the outer membranes of certain cells?

Options:
A Transport proteins
B Aquaporins
C Porins
D Controlled channels

The correct answer is:
Porins

Solution:
The porins are proteins that form large pores in the outer membranes.

Topic: Biology, Transport in Plants, NEET
What type of quantity is dipole moment in chemistry?

Options:
A Scalar quantity
B Vector quantity
C Absolute quantity
D Relative quantity

The correct answer is:
Vector quantity

Solution:
The paragraph dipole moment is a vector quantity.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What type of reaction competes with substitution reactions during the dehydration of alcohols?

Options:
A Addition reactions
B Elimination reactions
C Oxidation reactions
D Polymerization reactions

The correct answer is:
Elimination reactions

Solution:
Elimination reactions, such as E1 and E2, compete with substitution reactions (SN1 and SN2) during alcohol dehydration.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What type of reaction conditions are typically used to stop the reaction at the amide stage during the hydrolysis of nitriles?

Options:
A Harsh conditions
B Acidic conditions
C Mild conditions
D Alkaline conditions

The correct answer is:
Mild conditions

Solution:
Mild reaction conditions are used to stop the hydrolysis of nitriles at the amide stage.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What type of reaction confirms the presence of a carbonyl group (>C=O) in glucose?

Options:
A Hydrogenation
B Oxidation
C Hydration
D Reaction with hydroxylamine

The correct answer is:
Reaction with hydroxylamine

Solution:
The reaction of glucose with hydroxylamine confirms the presence of a carbonyl group (>C=O) in glucose.

Topic: Chemistry, Biomolecules, NEET
What type of reaction do alcohols typically undergo when they act as nucleophiles?

Options:
A Addition reaction
B Substitution reaction
C Elimination reaction
D Redox reaction

The correct answer is:
Substitution reaction

Solution:
Alcohols often undergo substitution reactions when they act as nucleophiles, where the hydroxyl group (-OH) is replaced by another group.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What type of reaction do aromatic aldehydes and ketones typically undergo in the presence of an aromatic ring?

Options:
A Nucleophilic addition
B Electrophilic substitution
C Reduction
D Rearrangement

The correct answer is:
Electrophilic substitution

Solution:
Aromatic aldehydes and ketones typically undergo electrophilic substitution reactions when reacting with an aromatic ring.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What type of reaction does a cold, dilute, aqueous solution of potassium permanganate (Baeyer's reagent) typically induce when it reacts with alkenes?

Options:
A Dehydration
B Halogenation
C Oxidation
D Esterification

The correct answer is:
Oxidation

Solution:
A cold, dilute, aqueous solution of potassium permanganate (Baeyer's reagent) is commonly used to oxidize alkenes, leading to the formation of vicinal glycols. This reaction involves the addition of oxygen to the double bond.

Topic: Chemistry, Hydrocarbons, NEET
What type of reaction forms compounds in which two aryl groups are joined together?

Options:
A Finkelstein reaction
B Grignard reaction
C Fittig reaction
D Friedel-Crafts reaction

The correct answer is:
Fittig reaction

Solution:
Compounds in which two aryl groups are joined together are formed in the Fittig reaction.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What type of reaction is characterized by a nucleophile replacing an existing nucleophile in a molecule?

Options:
A Nucleophilic addition reaction
B Nucleophilic substitution reaction
C Electrophilic addition reaction
D Electrophilic substitution reaction

The correct answer is:
Nucleophilic substitution reaction

Solution:
Nucleophilic substitution reactions as reactions in which a nucleophile replaces an already existing nucleophile in a molecule.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What type of reaction is characterized by the involvement of electrophiles?

Options:
A Electrophilic
B Heterolytic
C Nucleophilic
D Ionic

The correct answer is:
Electrophilic

Solution:
When a reagent takes away an electron pair from the reactive site, the reaction is called electrophilic.

Topic: Chemistry, General Organic Chemistry, NEET
What type of reaction is characterized by the involvement of nucleophiles?

Options:
A Electrophilic
B Heterolytic
C Nucleophilic
D Ionic

The correct answer is:
Nucleophilic

Solution:
When a reagent brings an electron pair to the reactive site, the reaction is called nucleophilic.

Topic: Chemistry, General Organic Chemistry, NEET
What type of reaction is electrophilic aromatic substitution?

Options:
A Addition reaction
B Substitution reaction
C Elimination reaction
D Oxidation reaction

The correct answer is:
Substitution reaction

Solution:
Electrophilic aromatic substitution involves the substitution of an atom or group on an aromatic ring with an electrophile.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What type of reaction is free radical chlorination or bromination of alkanes?

Options:
A A substitution reaction
B An addition reaction
C An elimination reaction
D A condensation reaction

The correct answer is:
A substitution reaction

Solution:
Free radical chlorination or bromination of alkanes is a substitution reaction.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What type of reaction is halogenation of arenes?

Options:
A Addition reaction
B Substitution reaction
C Elimination reaction
D Oxidation-reduction reaction

The correct answer is:
Substitution reaction

Solution:
Halogenation of arenes is a substitution reaction where a hydrogen atom on the aromatic ring is replaced by a halogen atom.

Topic: Chemistry, Hydrocarbons, NEET
What type of reaction is involved in Tollens' test?

Options:
A Reduction
B Hydrolysis
C Oxidation
D Substitution

The correct answer is:
Oxidation

Solution:
Tollens' test involves the oxidation of aldehydes to corresponding carboxylate anions.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What type of reaction is involved when phthalimide reacts with an alkyl halide in the Gabriel synthesis?

Options:
A Addition reaction
B Elimination reaction
C Substitution reaction
D Redox reaction

The correct answer is:
Substitution reaction

Solution:
The reaction between phthalimide and an alkyl halide in the Gabriel synthesis is a nucleophilic substitution reaction.

Topic: Chemistry, Amines, NEET
What type of reaction is sulphonation of benzene?

Options:
A Substitution reaction
B Addition reaction
C Polymerization reaction
D Redox reaction

The correct answer is:
Substitution reaction

Solution:
Sulphonation of benzene is a substitution reaction, where a hydrogen atom is replaced by a sulphonate group.

Topic: Chemistry, Hydrocarbons, NEET
What type of reaction is the addition of ammonia and its derivatives to aldehydes and ketones?

Options:
A Substitution
B Elimination
C Addition
D Condensation

The correct answer is:
Addition

Solution:
The addition of ammonia and its derivatives to aldehydes and ketones is an addition reaction.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What type of reaction is the bromination of anisole?

Options:
A Substitution
B Addition
C Elimination
D Oxidation

The correct answer is:
Substitution

Solution:
Bromination involves the substitution of a hydrogen atom with a bromine atom.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What type of reaction is the conversion of chlorobenzene to phenol with sodium hydroxide?

Options:
A Substitution reaction
B Addition reaction
C Elimination reaction
D Redox reaction

The correct answer is:
Substitution reaction

Solution:
The reaction between chlorobenzene and sodium hydroxide involves the substitution of the chlorine atom with a hydroxyl group.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What type of reaction is the conversion of phenol to phenol-2,4-disulphonic acid with concentrated sulfuric acid?

Options:
A Electrophilic substitution
B Nucleophilic substitution
C Oxidation
D Hydrolysis

The correct answer is:
Electrophilic substitution

Solution:
The conversion of phenol to phenol-2,4-disulphonic acid with concentrated sulfuric acid involves electrophilic substitution of a sulfonic acid group (-SO3H).

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What type of reaction is the decarboxylation of carboxylic acids?

Options:
A Addition reaction
B Substitution reaction
C Elimination reaction
D Oxidation reaction

The correct answer is:
Elimination reaction

Solution:
Decarboxylation of carboxylic acids is an elimination reaction in which carbon dioxide is eliminated from the molecule.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What type of reaction is the dehalogenation of vicinal dihalides with zinc?

Options:
A Substitution reaction
B Addition reaction
C Elimination reaction
D Oxidation-reduction reaction

The correct answer is:
Substitution reaction

Solution:
The dehalogenation of vicinal dihalides with zinc is a substitution reaction, where halogen atoms are substituted with carbon-carbon double bonds to form an alkene.

Topic: Chemistry, Hydrocarbons, NEET
What type of reaction is the dissociation of hydrogen iodide (2HI → H2 + I2)?

Options:
A Bimolecular
B Unimolecular
C Trimolecular
D Monomolecular

The correct answer is:
Bimolecular

Solution:
The dissociation of hydrogen iodide (2HI → H2 + I2) is a bimolecular reaction.

Topic: Chemistry, Chemical Kinetics, NEET
What type of reaction is the reaction between Cu2+ ions and I-(aq)?

Options:
A Acid-base
B Redox
C Precipitation
D Complexation

The correct answer is:
Redox

Solution:
The passage describes the reaction between Cu2+ ions and I-(aq) as a redox reaction.

Topic: Chemistry, Redox Reactions, NEET
What type of reaction occurs in primary batteries like the dry cell?

Options:
A Reversible reaction
B Electrolysis
C Complex chemical reaction
D Reaction that occurs only once

The correct answer is:
Reaction that occurs only once

Solution:
In primary batteries, the reaction occurs only once.

Topic: Chemistry, Electrochemistry, NEET
What type of reaction occurs when carboxylic acids react with alkalies?

Options:
A Formation of covalent bonds
B Formation of salts
C Production of carbon dioxide
D Evolvement of hydrogen gas

The correct answer is:
Formation of salts

Solution:
Carboxylic acids react with alkalies to form salts.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What type of reaction occurs when concentrated sulphuric acid adds to alkenes under cold conditions, following the Markovnikov rule?

Options:
A Substitution
B Elimination
C Addition
D Polymerization

The correct answer is:
Addition

Solution:
The reaction between concentrated sulphuric acid and alkenes under cold conditions follows the Markovnikov rule and is an addition reaction.

Topic: Chemistry, Hydrocarbons, NEET
What type of reaction occurs when concentrated sulphuric acid is added to alkenes under cold conditions?

Options:
A Nucleophilic substitution
B Electrophilic addition
C Radical polymerization
D Acid-base neutralization

The correct answer is:
Electrophilic addition

Solution:
The addition of concentrated sulphuric acid to alkenes under cold conditions involves electrophilic addition, where the acid adds to the double bond.

Topic: Chemistry, Hydrocarbons, NEET
What type of reaction occurs when hydrogen combines with oxygen to form water?

Options:
A Redox reaction
B Acid-base reaction
C Precipitation reaction
D Combustion reaction

The correct answer is:
Redox reaction

Solution:
The combination of hydrogen and oxygen to form water involves a redox (reduction-oxidation) reaction.

Topic: Chemistry, Redox Reactions, NEET
What type of reaction occurs when methyl chloride reacts with silicon in the presence of copper as a catalyst?

Options:
A Combustion
B Polymerization
C Hydrolysis
D Oxidation

The correct answer is:
Polymerization

Solution:
When methyl chloride reacts with silicon in the presence of copper as a catalyst, various types of methyl silicones are formed.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
What type of reaction results in the formation of alkylarenes?

Options:
A Nucleophilic substitution
B Wurtz-Fittig reaction
C Electrophilic addition
D Radical polymerization

The correct answer is:
Wurtz-Fittig reaction

Solution:
The formation of alkylarenes occurs through the Wurtz-Fittig reaction.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What type of reactions do aromatic carboxylic acids not undergo because of the carboxyl group's deactivating effect?

Options:
A Hydrogenation
B Halogenation
C Friedel-Crafts reactions
D Nitration

The correct answer is:
Friedel-Crafts reactions

Solution:
Aromatic carboxylic acids do not undergo Friedel-Crafts reactions due to the deactivating effect of the carboxyl group.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What type of reactions do haloarenes undergo with the benzene ring?

Options:
A Nucleophilic substitution reactions
B Electrophilic substitution reactions
C Radical substitution reactions
D Oxidation reactions

The correct answer is:
Electrophilic substitution reactions

Solution:
Haloarenes undergo electrophilic substitution reactions of the benzene ring.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What type of reactions occur when Calgon is added to hard water?

Options:
A Precipitation reactions
B Acid-base reactions
C Complexation reactions
D Redox reactions

The correct answer is:
Complexation reactions

Solution:
When Calgon is added to hard water, complexation reactions occur where Calgon forms soluble complexes with hardness ions.

Topic: Chemistry, Hydrogen, NEET
What type of reactions occur when zeolite is added to hard water in the ion-exchange method?

Options:
A Redox reactions
B Precipitation reactions
C Complexation reactions
D Ion-exchange reactions

The correct answer is:
Ion-exchange reactions

Solution:
In the ion-exchange method using zeolite, ion-exchange reactions occur between the sodium ions in zeolite and the calcium or magnesium ions in hard water.

Topic: Chemistry, Hydrogen, NEET
What type of reactions proceed with moderate speed?

Options:
A Ionic reactions
B Precipitation reactions
C Rusting reactions
D Hydrolysis reactions

The correct answer is:
Hydrolysis reactions

Solution:
The reactions like the inversion of cane sugar and hydrolysis of starch proceed with a moderate speed.

Topic: Chemistry, Chemical Kinetics, NEET
What type of reactions typically take place on the aromatic ring in phenols?

Options:
A Electrophilic addition reactions
B Electrophilic substitution reactions
C Nucleophilic substitution reactions
D Nucleophilic addition reactions

The correct answer is:
Electrophilic substitution reactions

Solution:
Phenols undergo electrophilic substitution reactions on their aromatic ring.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What type of regulation is the regulation of lac operon by repressor?

Options:
A Positive regulation
B Negative regulation
C Coordinated regulation
D Constitutive regulation

The correct answer is:
Negative regulation

Solution:
Regulation of the lac operon by repressor is referred to as negative regulation.

Topic: Biology, Molecular Basis of Inheritance, NEET
What type of reproductive structure do phycomycetes produce?

Options:
A Sporangium
B Fruiting bodies
C Zygospore
D Hyphae

The correct answer is:
Sporangium

Solution:
The spores are endogenously produced in sporangium in phycomycetes.

Topic: Biology, Biological Classification, NEET
What type of respiratory structures are used by most aquatic arthropods and molluscs?

Options:
A Lungs
B Moist skin
C Gills
D Tracheal tubes

The correct answer is:
Gills

Solution:
Most aquatic arthropods and molluscs use special vascularised structures called gills for exchanging gases.

Topic: Biology, Breathing and Exchange of Gases, NEET
What type of respiratory system do mammals have?

Options:
A Simple diffusion system over their entire body surface
B A network of tubes
C Gills
D A well-developed respiratory system

The correct answer is:
A well-developed respiratory system

Solution:
Mammals have a well-developed respiratory system, which includes lungs and other respiratory structures.

Topic: Biology, Breathing and Exchange of Gases, NEET
What type of ribosomes are found in chloroplasts?

Options:
A 70S
B 90S
C 100S
D 110S

The correct answer is:
70S

Solution:
Chloroplasts contain ribosomes that are smaller than the cytoplasmic ribosomes, specifically 70S ribosomes.

Topic: Biology, Cell - The Unit of Life, NEET