datavorous/entrance-exam-dataset huggingface dataset:
What percentage of the human body is composed of water?

Options:
A 5%
B 25%
C 65%
D 95%

The correct answer is:
65%

Solution:
The human body is composed of approximately 65% water.

Topic: Chemistry, Hydrogen, NEET
What percentage of total species have been recorded according to May's global estimates?

Options:
A 22%
B 2.2%
C 0.22%
D None of the above

The correct answer is:
22%

Solution:
May's global estimates suggest that only 22% of the total species have been recorded so far.

Topic: Biology, Biodiversity and its Conservation, NEET
What percentages of PAR can be captured by the plants?

Options:
A 1-5%
B 2-10%
C 20%
D 50%

The correct answer is:
2-10%

Solution:
Of the total Photosynthetically active radiation (PAR) used by the living organisms on earth Plants used about 2 - 10%. The range of radiation used by photosynthetic organisms is 400 - 700nm. photosynthetically active radiation (PAR) of the total incident solar radiation is 50%.

Topic: Biology, Ecosystem, NEET
What phase follows prophase?

Options:
A Metaphase
B Anaphase
C Telophase
D Interphase

The correct answer is:
Metaphase

Solution:
Metaphase is the second stage of karyokinesis of mitosis, which follows prophase.

Topic: Biology, Cell Cycle and Cell Division, NEET
What phase of the cell cycle corresponds to the interval between mitosis and initiation of DNA replication?

Options:
A G₂ phase
B S phase
C G₁ phase
D M phase

The correct answer is:
G₁ phase

Solution:
G₁ phase corresponds to the interval between mitosis and initiation of DNA replication.

Topic: Biology, Cell Cycle and Cell Division, NEET
What phase transition is associated with sublimation?

Options:
A Solid to gas
B Liquid to gas
C Liquid to solid
D Gas to liquid

The correct answer is:
Solid to gas

Solution:
Sublimation is the phase transition from solid to gas, which occurs without passing through the liquid phase.

Topic: Chemistry, General Organic Chemistry, NEET
What phenomenon is characteristic of waves and was observed in electrons, leading to the confirmation of de Broglie's prediction?

Options:
A Diffraction
B Reflection
C Refraction
D Absorption

The correct answer is:
Diffraction

Solution:
the observation of electrons undergoing diffraction, a phenomenon characteristic of waves, confirmed de Broglie's prediction about the dual behavior of electrons.

Topic: Chemistry, Structure of Atom, NEET
What phenomenon occurs when raisins are placed in water, and how can it be explained?

Options:
A Osmosis - Water molecules move into the raisins, causing them to swell due to the concentration gradient.
B Diffusion - Raisins absorb water through their semi-permeable membranes.
C Evaporation - Water evaporates from the raisins, causing them to increase in size.
D Sublimation - Raisins change from a solid to a gaseous state when placed in water.

The correct answer is:
Osmosis - Water molecules move into the raisins, causing them to swell due to the concentration gradient.

Solution:
Correct Option is : (A)
Osmosis - Water molecules move into the raisins, causing them to swell due to the concentration gradient.

Topic: Chemistry, Solutions, NEET
What phylum do insects belong to?

Options:
A Chordata
B Arthropoda
C Mollusca
D Echinodermata

The correct answer is:
Arthropoda

Solution:
Insects belong to the phylum Arthropoda, which is the largest phylum of Animalia and includes over two-thirds of all named species on earth.

Topic: Biology, Animal Kingdom, NEET
What physical properties are identical in enantiomers?

Options:
A Melting point and boiling point
B Refractive index and rotation of plane-polarized light
C Density and solubility
D Color and odor

The correct answer is:
Refractive index and rotation of plane-polarized light

Solution:
Enantiomers possess identical physical properties such as melting point, boiling point, refractive index, etc., but they differ in the rotation of plane-polarized light.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What physical property of compounds is influenced by hydrogen bonds?

Options:
A Density
B Electrical conductivity
C Structure and properties
D Melting point

The correct answer is:
Structure and properties

Solution:
The hydrogen bonds have a strong influence on the structure and properties of compounds.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What physical property of water is responsible for its ability to rise in thin tubes in plants?

Options:
A Cohesion
B Adhesion
C Surface Tension
D Evaporation

The correct answer is:
Surface Tension

Solution:
Surface tension is the property of water that makes it attracted to itself more than to water in the gas phase. This gives water high tensile strength, i.e., an ability to resist a pulling force, and high capillarity, i.e., the ability to rise in thin tubes. In plants, capillarity is aided by the small diameter of the tracheary elements – the tracheids and vessel elements.

Topic: Biology, Transport in Plants, NEET
What physical quantity is the same for X-rays of wavelength 10–10m, red light of wavelength 6800 Å and radiowaves of wavelength 500m?

Options:
A wavelength
B Speed
C frequency
D amplitude

The correct answer is:
Speed

Solution:
Correct Option is : (B)
Speed

Topic: Chemistry, Electromagnetic Waves, NEET
What physical state are higher carboxylic acids typically in?

Options:
A Gaseous
B Liquid
C Solid
D Crystalline

The correct answer is:
Solid

Solution:
Higher carboxylic acids are typically in the solid state due to their higher molecular masses.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
What physical state are the next fourteen members of alkenes at room temperature and pressure?

Options:
A Gases
B Liquids
C Solids
D Depends on the specific compound

The correct answer is:
Liquids

Solution:
The next fourteen members of alkenes are typically in the liquid state at room temperature and pressure.

Topic: Chemistry, Hydrocarbons, NEET
What physiological effects can occur if ozone concentration rises above a certain level in the air?

Options:
A Enhanced concentration and alertness
B Unpleasant smell
C Headache and nausea
D Improved lung function

The correct answer is:
Headache and nausea

Solution:
When the concentration of ozone rises above about 100 parts per million, it can lead to discomfort, including headache and nausea.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What pigments are present in brown algae?

Options:
A Chlorophyll a and b
B Chlorophyll a and carotenoids
C Chlorophyll a, c, carotenoids and xanthophylls
D Chlorophyll b and carotenoids

The correct answer is:
Chlorophyll a, c, carotenoids and xanthophylls

Solution:
They possess chlorophyll a, c, carotenoids and xanthophylls.

Topic: Biology, Plant Kingdom, NEET
What played a major role in the formulation of Bohr's model of the atom?

Options:
A The discovery of nuclear forces
B The discovery of electrons
C The dual nature of electromagnetic radiation
D The study of chemical reactions

The correct answer is:
The dual nature of electromagnetic radiation

Solution:
The dual nature of electromagnetic radiation played a major role in the formulation of Bohr's model of the atom.

Topic: Chemistry, Structure of Atom, NEET
What plays a significant role in the area of analytical chemistry, according to the paragraph?

Options:
A Formation of coordination entities
B Use of metal ions with a number of ligands
C Chelating ligands
D All of the above

The correct answer is:
All of the above

Solution:
Formation of coordination entities, use of metal ions with a number of ligands, and chelating ligands play significant roles in the area of analytical chemistry.

Topic: Chemistry, Coordination Compounds, NEET
What pollutants are emitted into the Earth's troposphere when fossil fuels are burned?

Options:
A Greenhouse gases and water vapor
B Hydrocarbons and nitric oxide
C Sulfur dioxide and carbon monoxide
D Particulate matter and ozone

The correct answer is:
Hydrocarbons and nitric oxide

Solution:
When fossil fuels are burned, pollutants like hydrocarbons (unburned fuels) and nitric oxide (NO) are emitted into the Earth's troposphere, along with other pollutants like sulfur dioxide, carbon monoxide, and particulate matter.

Topic: Chemistry, Environmental Chemistry, NEET
What precaution is taken if nitrogen or sulfur is also present in the compound during the test for halogens?

Options:
A The solution is heated to a higher temperature
B The sodium fusion extract is acidified with sulfuric acid
C The sodium fusion extract is boiled with concentrated nitric acid
D Silver nitrate is added directly to the solution

The correct answer is:
The sodium fusion extract is boiled with concentrated nitric acid

Solution:
If nitrogen or sulfur is present, the sodium fusion extract is first boiled with concentrated nitric acid to decompose cyanide or sulfide ions, which might otherwise interfere with the silver nitrate test for halogens.

Topic: Chemistry, General Organic Chemistry, NEET
What prefix is used to indicate the number of individual ligands in a coordination entity with numerical prefixes in their names?

Options:
A Uni-
B Bi-
C Mono-
D Di-

The correct answer is:
Di-

Solution:
The prefix "di-" is used to indicate the number of individual ligands in a coordination entity with numerical prefixes in their names.

Topic: Chemistry, Coordination Compounds, NEET
What prevents significant ozone depletion in Antarctica during the summer season?

Options:
A Chlorine monoxide
B Nitrogen dioxide
C Methane
D Chlorine sinks

The correct answer is:
Chlorine sinks

Solution:
Chlorine sinks, formed through reactions in the summer season over Antarctica, prevent significant ozone depletion by removing reactive chlorine compounds.

Topic: Chemistry, Environmental Chemistry, NEET
What prevents significant ozone depletion in the Antarctic stratosphere during the summer season?

Options:
A Increased levels of CFCs
B Formation of polar stratospheric clouds
C High levels of UV radiation
D Ozone production

The correct answer is:
Formation of polar stratospheric clouds

Solution:
During the summer season in Antarctica, the formation of polar stratospheric clouds prevents significant ozone depletion by providing a surface for chlorine nitrate to hydrolyze and form hypochlorous acid.

Topic: Chemistry, Environmental Chemistry, NEET
What prevents the close approach of particles when they possess a double layer?

Options:
A Attractive forces
B Repulsive forces
C Neutralizing forces
D Van der Waals forces

The correct answer is:
Repulsive forces

Solution:
The paragraph mentions that when particles possess a double layer, the repulsion between particles at large distances of separation prevents their close approach.

Topic: Chemistry, Surface Chemistry, NEET
What prevents the globules from coming together and forming aggregates?

Options:
A Hydrophilic part of soap molecules
B Hydrophobic part of stearate ions
C Emulsification
D Negatively charged sheath

The correct answer is:
Negatively charged sheath

Solution:
The negatively charged sheath around the globules (micelles) prevents them from coming together and forming aggregates.

Topic: Chemistry, Surface Chemistry, NEET
What principle does Galileo's statement in his book "Two New Sciences," which claims that "for elevations which exceed or fall short of 45° by equal amounts, the ranges are equal," seek to prove?

Options:
A The relationship between launch angle and range in projectile motion
B The concept of conservation of energy in projectile motion
C The dependence of air resistance on projectile motion
D The effect of gravity on objects in free fall

The correct answer is:
The relationship between launch angle and range in projectile motion

Solution:
Correct Option is : (A)
The relationship between launch angle and range in projectile motion

Topic: Chemistry, Motion In Two Dimensions, NEET
What principle does magnetic separation rely on for separating ore components?

Options:
A Chemical differences
B Size differences
C Magnetic properties
D Electrical conductivity

The correct answer is:
Magnetic properties

Solution:
Magnetic separation relies on differences in the magnetic properties of the ore components for separation.

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
What principle does the metal detector at the airport use to detect metal objects?

Options:
A Electromagnetic radiation
B Resonance in AC circuits
C Infrared technology
D Ultrasonic waves

The correct answer is:
Resonance in AC circuits

Solution:
Correct Option is : (B)
Resonance in AC circuits

Topic: Chemistry, Alternating Current, NEET
What principle governs the filling of electrons into orbitals of different atoms?

Options:
A Bohr's principle
B Aufbau principle
C Heisenberg's principle
D Planck's principle

The correct answer is:
Aufbau principle

Solution:
Thefilling of electrons into orbitals of different atoms takes place according to the aufbau principle.

Topic: Chemistry, Structure of Atom, NEET
What principle is obeyed when filling molecular orbitals in MO theory?

Options:
A Avogadro's principle
B Aufbau principle
C Archimedes' principle
D Uncertainty principle

The correct answer is:
Aufbau principle

Solution:
The molecular orbitals are filled in accordance with the Aufbau principle.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What principle is the basis for zone refining?

Options:
A Solubility of impurities in the solid state
B The melting point of metals
C Solubility of impurities in the melt
D Metal crystallization

The correct answer is:
Solubility of impurities in the melt

Solution:
Zone refining is based on the principle that impurities are more soluble in the melt than in the solid state of the metal.

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
What prizes did Ernst Mayr win during his career?

Options:
A The Balzan Prize
B The Nobel Prize
C The International Prize for Biology
D All of the above

The correct answer is:
All of the above

Solution:
Ernst Mayr won the Balzan Prize in 1983, the International Prize for Biology in 1994, and the Crafoord Prize in 1999. These prizes are widely regarded as the triple crown of biology.

Topic: Biology, The Living World, NEET
What problem arises in using alitame as an artificial sweetener?

Options:
A It has a bitter aftertaste.
B It is too expensive to produce.
C It is not stable at high temperatures.
D It is not approved by food safety authorities.

The correct answer is:
It has a bitter aftertaste.

Solution:
Correct Option is : (A)
It has a bitter aftertaste.

Topic: Chemistry, Chemistry in Everyday Life, NEET
What problem arose when it was observed that benzene forms only one ortho disubstituted product?

Options:
A Lack of suitable reagents
B Violation of Kekulé's structure
C Difficulty in chemical analysis
D Incompatibility with the oscillating bond concept

The correct answer is:
Incompatibility with the oscillating bond concept

Solution:
The observation that benzene forms only one ortho disubstituted product posed a problem for Kekulé's structure, which led to the concept of oscillating double bonds.

Topic: Chemistry, Hydrocarbons, NEET
What problem does the concept of resonance aim to address in molecular structure depiction?

Options:
A Inaccurate placement of nuclei
B Inaccurate representation of electrons
C Inadequate description of hybridization
D Inaccurate depiction of certain molecules

The correct answer is:
Inaccurate depiction of certain molecules

Solution:
The concept of resonance was introduced to deal with difficulties in accurately depicting the structures of molecules like O3.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What problem does the theory proposed by Sidgwick and Powell aim to address?

Options:
A Predicting atomic structures
B Explaining electron detachment
C Describing covalent bond formation
D Predicting the shapes of molecules

The correct answer is:
Predicting the shapes of molecules

Solution:
The theory proposed by Sidgwick and Powell aims to provide a simple procedure for predicting the shapes of covalent molecules.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What problems began to arise in the late 1940s related to the extensive use of DDT?

Options:
A Increased effectiveness against insects
B Resistance of many insect species to DDT
C Improved safety for fish
D Reduced toxicity to humans

The correct answer is:
Resistance of many insect species to DDT

Solution:
In the late 1940s, problems related to the extensive use of DDT began to appear, including the development of resistance by many species of insects to DDT.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What problems in India can be simultaneously addressed through technology?

Options:
A Power cuts and water shortages
B Air pollution and traffic congestion
C Power cuts and waste management
D Waste management and water purification

The correct answer is:
Power cuts and waste management

Solution:
Technology that can produce electricity from garbage, addressing the problem of power cuts, while also managing waste effectively.

Topic: Chemistry, Environmental Chemistry, NEET
What process allows a limp carrot, which lost water due to atmospheric factors, to become firm again when placed in water?

Options:
A Evaporation
B Osmosis
C Sublimation
D Diffusion

The correct answer is:
Osmosis

Solution:
The paragraph mentions that a limp carrot can become firm again when placed in water, and this is attributed to osmosis, which involves the flow of water into its cells.

Topic: Chemistry, Solutions, NEET
What process is applied to oxide ores of iron to remove water and decompose carbonates?

Options:
A Reduction
B Calcination
C Oxidation
D Leaching

The correct answer is:
Calcination

Solution:
Calcination is employed to remove water and decompose carbonates from oxide ores of iron.

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
What process is described by the equation "X(g) + e- → X-(g)"?

Options:
A Formation of a positive ion
B Formation of a negative ion
C Formation of a covalent bond
D Formation of a diatomic molecule

The correct answer is:
Formation of a negative ion

Solution:
The equation "X(g) + e- → X- (g)" represents the formation of a negative ion by adding an electron to a neutral atom.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What process is represented by the equation "M(g) → M+(g) + e-"?

Options:
A Formation of a positive ion
B Formation of a negative ion
C Formation of a covalent bond
D Formation of a diatomic molecule

The correct answer is:
Formation of a positive ion

Solution:
The equation "M(g) → M+(g) + e-" represents the formation of a positive ion by removing an electron from a neutral atom.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What process is represented by the equation "M+(g) + X- (g) → MX(s)" ?

Options:
A Formation of a positive ion
B Formation of a negative ion
C Formation of a covalent bond
D Formation of an ionic compound

The correct answer is:
Formation of an ionic compound

Solution:
The equation "M+(g) + X- (g) → MX(s)" represents the formation of an ionic compound from a positive ion and a negative ion.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What process is used to increase the conductivity of intrinsic semiconductors like silicon and germanium?

Options:
A Ionization
B Doping
C Overlapping
D Band gap modification

The correct answer is:
Doping

Solution:
The process used to increase the conductivity of intrinsic semiconductors like silicon and germanium is called doping, where suitable impurities are added to introduce electronic defects.

Topic: Chemistry, Solid State, NEET
What process is used to produce cast iron?

Options:
A Casting
B Forging
C Melting pig iron with scrap iron and coke
D Adding oxygen to pig iron

The correct answer is:
Melting pig iron with scrap iron and coke

Solution:
Cast iron is produced by melting pig iron with scrap iron and coke using a hot air blast.

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
What process neutralizes the sodium aluminate present in the solution after leaching?

Options:
A Heating
B Cooling
C Seeding
D Passing CO2 gas

The correct answer is:
Passing CO2 gas

Solution:
The sodium aluminate present in solution is neutralized by passing CO2 gas.

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
What product is formed when H2S gas is passed through acidified KMnO4 solution?

Options:
A MnO2
B S
C K2SO3
D K2S

The correct answer is:
S

Solution:
2KMnO4+3H2SO4→K2SO4+2MnSO4+5S+8H2O

Topic: Chemistry, d and f Block Elements, NEET
What product is formed when phosphine gas is mixed with chlorine gas

Options:
A The mixture only cools down
B PCl3 and HCl are formed and the mixture warms up
C PCl5 and HCl are formed and the mixture cools down

D PH3.Cl2 is formed with warming up

The correct answer is:
PCl5 and HCl are formed and the mixture cools down

Solution:
PH3+4Cl2→PCl5+3HCl

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What product is obtain when acetylene reacts with excess of hypochlorous acid?

Options:
A CH3COCl
B ClCHCOOH
C Cl2CHCHO
D ClCH2CHO

The correct answer is:
Cl2CHCHO

Solution:
HC≡CH+2HOCl→[CHCl2-CH(OH)2]↓-H2OCHCl2-CHODichloroacetaldehyde

Topic: Chemistry, Hydrocarbons, NEET
What product is obtain when alcoholic Solution of ethylene dibromide is heated with granulated zinc?

Options:
A Ethylene
B Cyclobutane
C Butane
D Ethyne

The correct answer is:
Ethylene

Solution:

Topic: Chemistry, Hydrocarbons, NEET
What product is obtained when chlorine is passed in boiling toluene and product is further hydrolysed

Options:
A o - Cresol
B p - Cresol
C 2, 4 - Dihydroxytoluene
D Benzyl alcohol

The correct answer is:
Benzyl alcohol

Solution:
When chlorine is passed in boiling toluene, substitution inside chain takes place and benzyl chloride is obtained which on hydrolysis give benzyl alcohol.

Topic: Chemistry, Hydrocarbons, NEET
What product is obtained when phenol reacts with concentrated nitric acid?

Options:
A 2,4,6-trinitrophenol
B 2,4-dinitrophenol
C 4-nitrophenol
D Picric acid

The correct answer is:
2,4,6-trinitrophenol

Solution:
When phenol reacts with concentrated nitric acid, it forms 2,4,6-trinitrophenol, which is commonly known as Picric acid due to the substitution of three nitro (-NO2) groups on the phenol ring.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
What products are expected from the disproportionation reaction of hypochlorous acid

Options:
A HClO2 and HClO4
B HCl and Cl2O
C HCl and HClO3
D HClO3 and Cl2O

The correct answer is:
HCl and HClO3

Solution:
The disproportionation reaction of hypochlorous acid is according to-
3HOCl→2HCl+HClO3

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What products are formed when alkali metals react with water?

Options:
A Hydroxide and hydrogen gas
B Oxides and oxygen gas
C Chlorides and chlorine gas
D Sulfides and sulfur gas

The correct answer is:
Hydroxide and hydrogen gas

Solution:
When alkali metals react with water, they produce hydroxide and hydrogen gas as the products.

Topic: Chemistry, s Block Elements, NEET
What products are formed when an organic compound is burned in the presence of oxygen and copper(II) oxide?

Options:
A Carbon dioxide and sulfur dioxide
B Water and copper oxide
C Carbon dioxide and water
D Oxygen gas and hydrogen gas

The correct answer is:
Carbon dioxide and water

Solution:
When an organic compound is burned in the presence of oxygen and copper(II) oxide, carbon and hydrogen are oxidized to carbon dioxide and water, respectively.

Topic: Chemistry, General Organic Chemistry, NEET
What products are formed when the following compounds is treated with Br2 in the presence of FeBr3 ?

Options:
A
B
C
D All of these

The correct answer is:

Solution:
In the above compound 1, 3-Dimethylbenzene, sites for the attacking electrophile are

Attack of electrophile on sites and results in same compound as product.
Although tendency of electrophile to attack on site is very less due to high steric hinderance so respective product is favoured with very less amount.

Topic: Chemistry, Hydrocarbons, NEET