datavorous/entrance-exam-dataset huggingface dataset:
In what practical application is reverse osmosis of great utility?

Options:
A Water purification
B Air conditioning
C Food preservation
D Oil extraction

The correct answer is:
Water purification

Solution:
The paragraph mentions that reverse osmosis is used in the desalination of seawater, which is a practical application of this process for water purification.

Topic: Chemistry, Solutions, NEET
In what processes is oxygen primarily used?

Options:
A Metal manufacturing
B Oxyacetylene welding
C Rocket propulsion
D Normal respiration and combustion

The correct answer is:
Normal respiration and combustion

Solution:
The paragraph states that oxygen is of importance in normal respiration and combustion processes.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
In what quantities could the latter actinoid members be prepared?

Options:
A In kilogram quantities
B In gram quantities
C In microgram quantities
D In nanogram quantities

The correct answer is:
In nanogram quantities

Solution:
The latter members could be prepared only in nanogram quantities.

Topic: Chemistry, d and f Block Elements, NEET
In what ratio a 80% (wt./vol.) solution of H2SO4 be mixed to 20% (wt./vol.) of H2SO4 to produce 40% (wt./vol.) H2SO4 solution

Options:
A 2 : 1
B 1 : 2
C 1 : 3
D 3 : 1

The correct answer is:
1 : 2

Solution:
Let, V1 mL of 80% and V2 mL of 20% are mixed
V1Ã80+V2Ã20=40(V1+V2)
So 40V1=20V2
So V1V2=12

Topic: Chemistry, Some Basic Concepts of Chemistry, NEET
In what region of the Earth was the "ozone hole" first discovered?

Options:
A North Pole
B Equator
C South Pole
D Tropics

The correct answer is:
South Pole

Solution:
The "ozone hole" was first discovered over the South Pole in Antarctica.

Topic: Chemistry, Environmental Chemistry, NEET
In what respect do prontosil and salvarsan resemble?

Options:
A Both prontosil and salvarsan are natural antibiotics produced by microorganisms.
B Both prontosil and salvarsan are radioactive compounds used in medical imaging.
C Both prontosil and salvarsan are derived from plant extracts and have analgesic properties.
D Both Salvarsan and prontosil show similarity in their structure.Salvarsan contains -As = As - linkage whereas prontosil has -N=N- linkage.

The correct answer is:
Both Salvarsan and prontosil show similarity in their structure.Salvarsan contains -As = As - linkage whereas prontosil has -N=N- linkage.

Solution:
Correct Option is : (D)
Both Salvarsan and prontosil show similarity in their structure.Salvarsan contains -As = As - linkage whereas prontosil has -N=N- linkage.

Topic: Chemistry, Chemistry in Everyday Life, NEET
In what situations are the results of quantum mechanics the same as classical mechanics?

Options:
A When studying microscopic objects
B When wave-like properties are significant
C When wave-like properties are insignificant
D When objects have observable wave-like properties

The correct answer is:
When wave-like properties are insignificant

Solution:
The results of quantum mechanics are the same as classical mechanics when applied to macroscopic objects for which wave-like properties are insignificant.

Topic: Chemistry, Structure of Atom, NEET
In what state do enzymes form solutions in water?

Options:
A Solid
B Gaseous
C Liquid
D Colloidal

The correct answer is:
Colloidal

Solution:
The paragraph notes that enzymes form colloidal solutions in water.

Topic: Chemistry, Surface Chemistry, NEET
In what state do ionic compounds exhibit orderly three-dimensional arrangements of cations and anions?

Options:
A Liquid state
B Gaseous state
C Crystalline state
D Amorphous state

The correct answer is:
Crystalline state

Solution:
The crystalline state is the state in which ionic compounds exhibit orderly three-dimensional arrangements of cations and anions.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
In what state does ammonia exist in its solid and liquid forms?

Options:
A Covalent molecular
B Ionic
C Metallic
D Hydrogen-bonded

The correct answer is:
Covalent molecular

Solution:
The paragraph mentions that in its solid and liquid states, ammonia is associated through hydrogen bonds.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
In what state of matter is ozone (O3) dark blue?

Options:
A Gaseous
B Liquid
C Solid
D Plasma

The correct answer is:
Solid

Solution:
Ozone is dark blue in its solid state.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
In what type of compounds does the ammonia molecule form complex compounds with metal ions?

Options:
A Salts
B Oxides
C Complex compounds
D Covalent compounds

The correct answer is:
Salts

Solution:
The paragraph suggests that the ammonia molecule forms complex compounds with metal ions, such as Cu2+ and Ag+, in the context of salts.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
In what type of compounds may atoms other than carbon be present in the ring?

Options:
A Aliphatic compounds
B Aromatic compounds
C Benzenoid compounds
D Heterocyclic compounds

The correct answer is:
Heterocyclic compounds

Solution:
Atoms other than carbon may be present in the ring of heterocyclic compounds.

Topic: Chemistry, General Organic Chemistry, NEET
In what type of molecule does the central atom possess linear geometry as a result of sp hybridisation?

Options:
A Triangular
B Tetrahedral
C Linear
D Octahedral

The correct answer is:
Linear

Solution:
A molecule in which the central atom is sp-hybridised and linked directly to two other central atoms possesses linear geometry.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
In what type of organisms is female heterogamety observed?

Options:
A Insects
B Mammals
C Birds
D Both insects and mammals

The correct answer is:
Birds

Solution:
In birds, the mechanism of sex determination is of the female heterogamety type.

Topic: Biology, Principles of Inheritance and Variation, NEET
In what type of solution are most biological fluids mentioned to be?

Options:
A Aqueous sols
B Suspensions
C Gels
D Emulsions

The correct answer is:
Aqueous sols

Solution:
The paragraph states that most biological fluids are aqueous sols, indicating a solution in water.

Topic: Chemistry, Surface Chemistry, NEET
In what type of solutions are water molecules typically the ligands?

Options:
A Aqueous solutions
B Organic solutions
C Gaseous solutions
D Solid solutions

The correct answer is:
Aqueous solutions

Solution:
In aqueous solutions, water molecules are the ligands.

Topic: Chemistry, d and f Block Elements, NEET
In what type of solvents are SN1 reactions generally carried out?

Options:
A Non-polar solvents
B Polar aprotic solvents
C Polar protic solvents
D Inert gases

The correct answer is:
Polar protic solvents

Solution:
SN1 reactions are generally carried out in polar protic solvents like water, alcohol, and acetic acid.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
In what type of solvents do molecules of ethanoic acid dimerize due to hydrogen bonding?

Options:
A Solvents with high dielectric constants
B Solvents with low dielectric constants
C Aqueous solvents
D Solvents with no dielectric constant

The correct answer is:
Solvents with low dielectric constants

Solution:
The paragraph mentions that molecules of ethanoic acid dimerize in solvents of low dielectric constant.

Topic: Chemistry, Solutions, NEET
In what type of substances is the entropy not zero at 0 K?

Options:
A Pure crystalline solids
B Liquids
C Supercooled liquids
D Gases

The correct answer is:
Supercooled liquids

Solution:
The paragraph mentions that the entropy of solutions and supercooled liquids is not zero at 0 K.

Topic: Chemistry, Thermodynamics (C), NEET
In what type of system is equilibrium possible for the physical processes?

Options:
A Open system
B Closed system
C Isolated system
D Dynamic system

The correct answer is:
Closed system

Solution:
Equilibrium is possible only in a closed system at a given temperature.

Topic: Chemistry, Chemical Equilibrium, NEET
In what types of foods is the use of aspartame limited?

Options:
A All foods
B Hot foods only
C Cold foods and soft drinks
D Baked goods

The correct answer is:
Cold foods and soft drinks

Solution:
The use of aspartame is limited to cold foods and soft drinks because it is unstable at cooking temperature.

Topic: Chemistry, Chemistry in Everyday Life, NEET
In what units can concentration in parts per million (ppm) be expressed?

Options:
A Mass to volume only
B Mass to mass only
C Volume to volume only
D Mass to mass, volume to volume, and mass to volume

The correct answer is:
Mass to mass, volume to volume, and mass to volume

Solution:
The paragraph mentions that concentration in parts per million (ppm) can be expressed as mass to mass, volume to volume, and mass to volume.

Topic: Chemistry, Solutions, NEET
In what way can it be proved that PH3is basic in nature?

Options:
A PH3can act as a Lewis base by donating a lone pair of electrons.
B PH3has a high ionization energy, indicating its basic nature.
C PH3readily forms strong covalent bonds with other phosphorus compounds.
D PH3undergoes a redox reaction when exposed to acids, confirming its basic nature.

The correct answer is:
PH3can act as a Lewis base by donating a lone pair of electrons.

Solution:
Correct Option is : (A)
PH3can act as a Lewis base by donating a lone pair of electrons.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
In what way do these water-soluble organic compounds, as weak acids, exhibit different colors?

Options:
A They change color based on temperature.
B They change color based on pressure.
C They change color in their acid and conjugate base forms.
D They have a fixed color and do not change.

The correct answer is:
They change color in their acid and conjugate base forms.

Solution:
These weak acids exhibit different colors in their acid (HIn) and conjugate base (In–) forms.

Topic: Chemistry, Ionic Equilibrium, NEET
In what way does ozone help to improve the quality of certain products mentioned in the passage?

Options:
A Enhancing taste and aroma
B Increasing the nutritional content
C Reducing the risk of spoilage
D Reducing production costs

The correct answer is:
Reducing the risk of spoilage

Solution:
Ozone is used in applications such as sterilizing water and disinfection, which can help reduce the risk of spoilage and improve the quality and safety of various products.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
In what way is diamond used in the manufacture of electric light bulbs?

Options:
A As a filament material
B As a glass coating
C As a reflector
D As an insulator

The correct answer is:
As a filament material

Solution:
Diamond is used in the manufacture of tungsten filaments for electric light bulbs.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
In what way is the electronic configuration of the transition elements different from that of the non transition elements?

Options:
A Transition elements have a higher number of electrons compared to non-transition elements.
B Transition elements have incomplete d-orbital but In non-transition elements, d-orbital is absent or completely filled
C Transition elements have a lower atomic number than non-transition elements.
D Transition elements have completely filled electron shells.

The correct answer is:
Transition elements have incomplete d-orbital but In non-transition elements, d-orbital is absent or completely filled

Solution:
Correct Option is : (B)
Transition elements have incomplete d-orbital but In non-transition elements, d-orbital is absent or completely filled

Topic: Chemistry, d and f Block Elements, NEET
In what ways lithium shows similarities to magnesium in its chemical behaviour?

Options:
A Both lithium and magnesium readily form covalent compounds with non-metals.
B Both lithium and magnesium have similar atomic radii.
C Both lithium and magnesium readily lose electrons to form positively charged ions.
D Both lithium and magnesium have high electronegativities compared to other elements in their respective groups.

The correct answer is:
Both lithium and magnesium readily lose electrons to form positively charged ions.

Solution:
Correct Option is : (C)
Both lithium and magnesium readily lose electrons to form positively charged ions.

Topic: Chemistry, s Block Elements, NEET
In what year did Alfonso Corti publish a paper describing the organ of Corti?

Options:
A 1822
B 1888
C 1851
D 1751

The correct answer is:
1851

Solution:
In 1851, Alfonso Corti published a paper describing a structure located on the basilar membrane of the cochlea containing hair cells that convert sound vibrations into nerve impulses, the organ of Corti.

Topic: Biology, Digestion and Absorption, NEET
In wheat and rice:

Options:
A Pericarp is fused with seed coat
B Perisperm is fused with seed coat
C Seed coat and pericarp are separate
D Fruit is multiseeded

The correct answer is:
Pericarp is fused with seed coat

Solution:
The fertilized mature ovule containing the embryo surrounded by layer of hard coat is generally called as seed. While the ovary in the flowering plant develops into a fruit after fertilization. The flowering plant family Poaceae show the fruit pattern of caryopsis which is a simple dry fruit similar to an achene but the pericarp (layers of the fruit part) is fused with the seed coat forming a grain. Rice, wheat and corn are classic examples showing such type of fruiting behaviour.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
In which animal nerve cell is present but the brain is absent?

Options:
A Sponge
B Earthworm
C Cockroach
D Hydra

The correct answer is:
Hydra

Solution:
The neural organisation is very simple in lower invertebrates. For example, in Hydra, it is composed of a network of neurons. The neural system is better organised in insects, where a brain is present along with a number of ganglia and neural tissues. The vertebrates have a more developed neural system.

Topic: Biology, Neural Control and Coordination, NEET
In which animal the nerve cell is present but the brain is absent?

Options:
A Sponge
B Earthworm
C Cockroach
D Hydra

The correct answer is:
Hydra

Solution:
Hydra which belongs to the phylum coelenterata has nerve cells but no brain. Its nervous system consists of nerve cells and their processes.
Sponges are the only multicellular animals without a nervous system. They do not have any nerve cells or sensory cells.
Earthworms have a simple nervous system. The cerebral ganglion is connected to a ventral nerve cord that runs the length of the body.
Cockroach has in total 9 ganglia in number. Each ganglion of the nerve cord is formed by the fusion of two ganglia except the ganglion in the 7th segment.
Related Theory
The nervous system of the cockroach is spread throughout the body. The head holds a bit of nervous system while the rest is situated along the ventral (belly-side) part of its body. So, if the head of the cockroach is cut off, it will still live for as long as one week.
Caution
Here brain word implies any kind of nerve tissue agglomerations/ganglion. All the options given lacks brain.

Topic: Biology, Animal Kingdom, NEET, NEET 2002
In which animals does the zygote develop inside the body of the female parent?

Options:
A Oviparous animals
B Viviparous animals
C Plants
D None of the above

The correct answer is:
Viviparous animals

Solution:
In viviparous animals, the majority of mammals including human beings, the zygote develops into a young one inside the body of the female parent.

Topic: Biology, Reproduction in Organisms, NEET
In which applications is low-density polythene (LDP) commonly used?

Options:
A Insulation of electricity carrying wires and manufacture of bottles
B Insulation of electricity carrying wires and manufacture of metals
C Insulation of electricity carrying wires and manufacture of ceramics
D Insulation of electricity carrying wires and manufacture of glass

The correct answer is:
Insulation of electricity carrying wires and manufacture of bottles

Solution:
Low-density polythene (LDP) is commonly used in the insulation of electricity carrying wires and in the manufacture of squeeze bottles, among other applications.

Topic: Chemistry, Polymers, NEET
In which atmospheric layer does most of Earth's weather phenomena occur?

Options:
A Troposphere
B Stratosphere
C Mesosphere
D Thermosphere

The correct answer is:
Troposphere

Solution:
Most of Earth's weather phenomena occur in the troposphere.

Topic: Chemistry, Environmental Chemistry, NEET
In which blood corpuscles, the HIV undergoes replication and produces progeny viruses?

Options:
A Eosinophils
B TH cells
C B-lymphocytes
D Basophils

The correct answer is:
TH cells

Solution:
AIDS:

This is a STI caused by the retrovirus, names as HIV.

After getting into the body of the person, the HIV enters into macrophages where it's RNA genome replicates to form viral DNA with the help of the enzyme reverse transcriptase.

Simultaneously, HIV enters into helper T-lymphocytes (TH), replicates and produce progeny viruses.

The progeny viruses released in the blood attack other helper T-lymphocytes.

Topic: Biology, Human Health and Diseases, NEET, NEET 2023 (All India)
In which carbon does fructose contain a ketonic functional group?

Options:
A Carbon 1
B Carbon 2
C Carbon 3
D Carbon 4

The correct answer is:
Carbon 2

Solution:
Fructose contains a ketonic functional group at carbon number 2.

Topic: Chemistry, Biomolecules, NEET
In which case can H2O act as both an Brönsted acid and a Brönsted base?

Options:
A NH2-
B NH3
C HCO3-
D HSO4-

The correct answer is:
HCO3-

Solution:
Correct Option is : (C)
HCO3-

Topic: Chemistry, Ionic Equilibrium, NEET
In which case change in entropy is negative?

Options:
A Evaporation of water
B Expansion of a gas at constant temperature
C Sublimation of solid to gas
D 2Hg→H2g

The correct answer is:
2Hg→H2g

Solution:
In the change in entropy is negative, it implies that the system is getting ordered or organized.

Among the given options, 2Hg→H2g

Is leading to order as atom are combining to form molecules.

Topic: Chemistry, Thermodynamics (C), NEET, NEET 2019 (All India)
In which case, hybridisation of the central atom is affected when:

Options:
A NH3 changes to NH 4 +
B AlH3 changes to AlH 4 -
C In both cases
D Is none case

The correct answer is:
AlH3 changes to AlH 4 -

Solution:
Hybridisation also for N ¨ H 3 (s p 3 ) and N H 4 + (s p 3 )
AlH 3 sp 2  change to  NH 4 − sp 3
NH 3 sp 3 +H + → NH 4 + sp 3

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
In which case the number of molecules of water maximum?

Options:
A 0.00224 L of water vapours at 1 atm and 273 K.
B 0.18 g of water.
C 18 mL of water.
D 10-3 mol of water.

The correct answer is:
18 mL of water.

Solution:
(i) 18 mL water:
As dH2O=1g/mL So WH2O=18g
nH2O=1818=1
Molecules =1×NA
(ii) 0.18 g of water:
nH2O=0.1818=0.01
H2O molecules=0.01×NA
(iii) (VH2O (g))STP=0.00224 L
nH2O=V22.4=0.0022422.4=0.0001
Molecules =0.0001×NA
(iv) nH2O=10-3
H2O molecules=10-3×NA

Topic: Chemistry, Some Basic Concepts of Chemistry, NEET, NEET 2018
In which case the number of water molecules is maximum?

Options:
A 0.00224 L of water vapours at 1 atm and 273 K
B 0.18 g of water
C 18 mL of water
D 10-2 mol of water

The correct answer is:
18 mL of water

Solution:
Number of moleules ∝ Number of moles
(A) Moles of water =0.0022422.4=10-4
Molecules of water =mole×NA=10-4NA
(B) Molecules of water =mole×NA=0.1818NA=10-2NA
(C) Mass of water =18×1=18g
Molecules of water =mole×NA=1818NA=NA
(D) Molecules of water = 10 −2 mole= 10 −2 N A
Hence 18 ml H2O has maximum molecules.

Topic: Chemistry, Some Basic Concepts of Chemistry, NEET
In which C–C bond of CH3CH2CH2Br, the inductive effect is expected to be the least?

Options:
A All the carbons experience same level of Inductive effect
B Magnitude of inductive effect increases as the number of intervening bonds increases. Hence, the effect is least in the bond between carbon-1[as per IUPAC] and hydrogen
C No Inductive effect is shown by the compounds given
D Magnitude of inductive effect diminishes as the number of intervening bonds increases. Hence, the effect is least in the bond between carbon-3[as per IUPAC] and hydrogen

The correct answer is:
Magnitude of inductive effect diminishes as the number of intervening bonds increases. Hence, the effect is least in the bond between carbon-3[as per IUPAC] and hydrogen

Solution:
Correct Option is : (D)
Magnitude of inductive effect diminishes as the number of intervening bonds increases. Hence, the effect is least in the bond between carbon-3[as per IUPAC] and hydrogen

Topic: Chemistry, General Organic Chemistry, NEET
In which cells in animals is mitotic cell division seen?

Options:
A Diploid cells only
B Haploid cells only
C Diploid and Haploid cells
D Only in certain cells

The correct answer is:
Diploid cells only

Solution:
Mitotic cell division is seen only in diploid cells of animals.

Topic: Biology, Cell Cycle and Cell Division, NEET
In which class of fungi, asexual spores are produced exogenously, while sexual spores are produced endogenously?

Options:
A Deuteromycetes
B Ascomycetes
C Phycomycetes
D Basidiomycets

The correct answer is:
Ascomycetes

Solution:
In ascomycetes, the asexual spores are conidia produced exogenously on the special mycelium called conidiophores. Conidia on germination produce mycelium. Sexual spores are called ascospores which are produced endogenously in sac-like asci (singular ascus). These asci are arranged in different types of fruiting bodies called ascocarps.

Topic: Biology, Biological Classification, NEET
In which compounds is the oxidation number of hydrogen +1?

Options:
A Alkali metal compounds
B Alkaline earth metal compounds
C Binary compounds with metals
D Oxoacids

The correct answer is:
Alkali metal compounds

Solution:
The passage states that in compounds with alkali metals, the oxidation number of hydrogen is +1.

Topic: Chemistry, Redox Reactions, NEET
In which compounds the C-H bond distance is longest?

Options:
A C2H2
B C2H4
C C2H4Br2
D C6H5OH

The correct answer is:
C2H4Br2

Solution:
C2H4Br2 has all single bonds so C-H bond distance is the largest.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
In which conditions can Chloramphenicol be given orally?

Options:
A Typhoid and dysentery
B Urinary infections and pneumonia
C Meningitis and cancer
D All of the above

The correct answer is:
All of the above

Solution:
Chloramphenicol can be given orally in cases of typhoid, dysentery, acute fever, certain forms of urinary infections, meningitis, and pneumonia.

Topic: Chemistry, Chemistry in Everyday Life, NEET
In which conditions does hydrogenation of benzene occur to produce cyclohexane?

Options:
A Low temperature and nickel catalyst
B High temperature and palladium catalyst
C High temperature and nickel catalyst
D Low temperature and platinum catalyst

The correct answer is:
High temperature and nickel catalyst

Solution:
Benzene undergoes hydrogenation to produce cyclohexane under high-temperature conditions in the presence of a nickel catalyst.

Topic: Chemistry, Hydrocarbons, NEET
In which contraceptive method, the semen will be without sperms?

Options:
A Condoms
B Withdrawal coitus
C Foams
D Vasectomy

The correct answer is:
Vasectomy

Solution:
Vasectomy causes sterilization by preventing the transfer of sperms. It blocks or cuts each vas deferens tube, keeping sperm out of semen. It is a permanent method for contraception in males hence irreversible.

Topic: Biology, Reproductive Health, NEET, NEET 2016 (Phase 1)
In which contraceptive method, the semen will be without sperms?

Options:
A Condoms
B Withdrawal coitus
C Foams
D Vasectomy

The correct answer is:
Vasectomy

Solution:
Vasectomy causes sterilization by preventing the transfer of sperms. It blocks or cuts each vas deferens tube, keeping sperm out of semen.

Topic: Biology, Reproductive Health, NEET
In which crystals arrangment of the following, the alternate tetrahedral voids are occupied?

Options:
A Na2O
B ZnS
C NaCl
D CaF2

The correct answer is:
ZnS

Solution:
In ZnS structure, sulphide ions occupy all FCC lattice points while Zn2+ ions are present in alternate tetrahedral voids.

Topic: Chemistry, Solid State, NEET