datavorous/entrance-exam-dataset huggingface dataset:
Which of the following is the primary source of nitrate contamination in groundwater?

Options:
A Natural geological processes
B Volcanic eruptions
C Industrial pollution
D Wind erosion

The correct answer is:
Natural geological processes

Solution:
The primary source of nitrate contamination in groundwater is often natural geological processes, although it can also be influenced by human activities such as agricultural runoff and industrial pollution.

Topic: Chemistry, Environmental Chemistry, NEET
Which of the following is the primary use of carbon black?

Options:
A Fuel for combustion
B Ink production
C Pharmaceutical synthesis
D Fertilizer production

The correct answer is:
Ink production

Solution:
Carbon black is primarily used in the production of ink, including printer ink and black pigments.

Topic: Chemistry, Hydrocarbons, NEET
Which of the following is the property of amorphous solids?

Options:
A Long range order
B Definite enthalpy of fusion
C Pseudo solids
D True solids

The correct answer is:
Pseudo solids

Solution:
Correct Option is : 3
Pseudo solids

Topic: Chemistry, Solid State, NEET
Which of the following is the reason for Dodo extinction?

Options:
A Habitat loss
B Co-extinction
C Over-exploitation
D Alien species invasion

The correct answer is:
Over-exploitation

Solution:
Dodo was small bird, found in Mauritius and became extinct due to over-exploitation. Evil quartet is the combination of 4 reasons behind major biodiversity losses that include habitat loss, Co-extinction, over-exploitation and alien species invasion.

Topic: Biology, Biodiversity and its Conservation, NEET
Which of the following is the reason for population explosion?

Options:
A Increase in the birth rate and longevity
B More number of people working
C Decrease in the death rate
D Both A and C are correct

The correct answer is:
Both A and C are correct

Solution:
Increase in the birth rate and longevity and decrease in death rate are the reasons for population explosion

Topic: Biology, Reproductive Health, NEET
Which of the following is the reason(s) for Rheumatoid arthritis? Choose the correct option. i. The ability to differentiate pathogens or foreign molecules from self cells increase. ii. The body attacks self cells iii. More antibodies are produced in the body iv. The ability to differentiate pathogens or foreign molecules from self cells is lost

Options:
A i and ii
B ii and iv
C iii and iv
D I and iii

The correct answer is:
ii and iv

Solution:
Sometimes, due to genetic and other unknown reasons, the body attacks self-cells. This results in damage to the body and is called auto-immune disease. Rheumatoid arthritis which affects many people in our society is an auto-immune disease.

Topic: Biology, Human Health and Diseases, NEET
Which of the following is the relatively most accurate method for dating of fossils?

Options:
A radio-carbon method
B potassium-argon method
C electron-spin resonance method
D uranium-lead method.

The correct answer is:
electron-spin resonance method

Solution:
Electron spin resonance method is relatively most accurate method for dating fossils.
Electron spin resonance dating is a technique that can directly detect unpaired or odd electrons in atomic or molecular systems. In this technique, a static magnetic field and microwaves are used to observe the behavior of the unpaired electrons in the material being studied. The study of the behavior of the electrons in a sample gives information about the condition of the sample.

Topic: Biology, Evolution, NEET, NEET 2005
Which of the following is the rich source of ascorbic acid?

Options:
A Butter
B Meat
C Fish liver oil
D Amla

The correct answer is:
Amla

Solution:
Correct Option is : 4
Amla

Topic: Chemistry, Biomolecules, NEET
Which of the following is the sequence on corresponding coding strand, if the sequence on mRNA formed is as follows

5' AUCGAUCGAUCGAUCGAUCGAUCGAUCG '3

Options:
A 3' ATCGATCGATCGATCGATCGATCGATCG 5'
B 5' UAGCUAGCUAGCUAGCUAGCUAGC UAGC 3'
C 3' UAGCUAGCUAGCUAGCUAGCUAGCUAGC 5'
D 5' ATCGATCGATCGATCGATCGATCGATCG 3'

The correct answer is:
5' ATCGATCGATCGATCGATCGATCGATCG 3'

Solution:
During transcription, the template strand has an orientation of 3' (promoter side) to 5' (terminator side). The RNA is synthesised in 5'-3' direction by RNA polymerase. The coding strand is complementary to template strand and thus have the same sequence like that of newly formed RNA (except for U, there would be T). Therefore, the coding strand sequence would be

5' ATCGATCGATCGATCGATCGATCGATCG 3'

Topic: Biology, Molecular Basis of Inheritance, NEET, NEET 2023 (All India)
Which of the following is the set of hormone-releasing IUDs?

Options:
A Multiload 375, LNG - 20.
B Progestasert, LNG - 20.
C Progestasert, Lippes loop.
D LNG - 20, Lippes loop.

The correct answer is:
Progestasert, LNG - 20.

Solution:
Types of IUDs :
1. Non-medicated IUDs - Lippes loop.
2. Copper releasing IUDs - CuT, Cu7, Multiload 375.
3. Hormone releasing IUDs - Progestasert, LNG-20.

Topic: Biology, Reproductive Health, NEET
Which of the following is the significance of reproductive health in a society?

Options:
A to make population education
B in order to prevent the sexually transmitted disease
C to give people occupation
D none of the above

The correct answer is:
in order to prevent the sexually transmitted disease

Solution:
The significance of reproductive health in society is to make the public aware about the prevention of sexually transmitted disease.

Topic: Biology, Reproductive Health, NEET
Which of the following is the simplest amino acid?

Options:
A Alanine
B Asparagine
C Glycine
D Tyrosine

The correct answer is:
Glycine

Solution:
Glycine is considered as the simplest amino acid as it has one amino group, one carboxylic group, one hydrogen and another hydrogen in place or R-group. It has no substituent functional group. It is also not an alpha amino acid.

Topic: Chemistry, Biomolecules, NEET
Which of the following is the site for oxidative decarboxylation?

Options:
A Cytosol
B Outer membrane of mitochondria
C Matrix of mitochondria
D Both A and C

The correct answer is:
Matrix of mitochondria

Solution:
During complete oxidation of glucose two oxidative decarboxylation reaction occurs one in link reaction when pyruvic acid is oxidized to Acetyl CoA and second in Kreb's cycle when alpha ketoglutaric acid is oxidized to succinyl CoA. Both these reactions occurs in matrix of mitochondria.

Topic: Biology, Respiration in Plants, NEET
Which of the following is the species of fungus used in the production of antibiotics?

Options:
A Penicillium notatum
B Puffballs
C Parchment & Resupinatus
D none of the above

The correct answer is:
Penicillium notatum

Solution:
For Penicillin, the fungal source is Penicillium notatum.

Topic: Biology, Microbes in Human Welfare, NEET
Which of the following is the structural and functional unit of liver in humans?

Options:
A Hepatocyte
B Hepatic cord
C Hepatic lobule without Glisson's capsule
D Hepatic lobule with Glisson's capsule

The correct answer is:
Hepatic lobule with Glisson's capsule

Solution:
The hepatic lobules are the structural and functional units of liver containing hepatic cells in the form of cords. Each lobule is covered by a thin connective tissue sheath called Glisson's capsule.

Topic: Biology, Digestion and Absorption, NEET
Which of the following is the tissue responsible for translocation of food in a tree according to the experiment of girdling?

Options:
A Bark
B Phloem
C Stem
D Roots

The correct answer is:
Phloem

Solution:
The experiment of girdling showed that a ring of bark removed up to a depth of the phloem layer causes the portion of the bark above the ring on the stem to become swollen after a few weeks due to the lack of downward movement of food. This indicates that the phloem is the tissue responsible for translocation of food in a tree.

Topic: Biology, Transport in Plants, NEET
Which of the following is the tissue system in the flowering plants?

Options:
A Sky tissue system
B Ground tissue system
C Monocot tissue system
D Dicot tissue system

The correct answer is:
Ground tissue system

Solution:
There are three basic tissue systems in the flowering plants: Epidermal tissue system, Ground tissue system and Vascular tissue system.

Topic: Biology, Anatomy of Flowering Plants, NEET
Which of the following is the true colour of emerald?

Options:
A Green
B Blue
C Pink
D white

The correct answer is:
Green

Solution:
Correct Option is : 1
Green

Topic: Chemistry, Coordination Compounds, NEET
Which of the following is the true structure of H2O2 ?

Options:
A H-O-O-H
B O|H-O|H
C
D

The correct answer is:
O|H-O|H

Solution:
O|H-O|H is the true structure.

Topic: Chemistry, s Block Elements, NEET
Which of the following is the unique feature of bryophytes?

Options:
A Presence of vascular bundles
B Reproduction only by the formation of gametes
C Gametophyte attached to the sporophyte
D Sporophyte attached to the gametophyte

The correct answer is:
Sporophyte attached to the gametophyte

Solution:
They are the simplest and most primitive land plants and they require water to complete their life cycle. They are also known by the name of amphibians of the plant kingdom and are found in moist and shady places. They possess rhizoids to absorb water from the soil. The gametophytic generation in bryophytes is long-lived while sporophytic generation is short-lived so the sporophyte is completely dependent on the gametophyte for nutrition. Vascular tissue is completely absent in Bryophytes.

Topic: Biology, Plant Kingdom, NEET
Which of the following is the use of biotechnology in modern agriculture?

Options:
A

Dependency of crops on chemical pesticides has reduced

B

Genetic modification has made the crops more tolerant to abiotic stresses

C

Have reduced post-harvest losses

D

All of the above

The correct answer is:

All of the above

Solution:
Agrochemicals cause pollution of soil and water and are too expensive for the farmer.

1. Genetically modification has made the crops more tolerant to abiotic stresses like cold, heat, drought, salinity etc.

2. It has reduced the dependence of crops on chemical pesticides as they are male pest-resistant.

3. Post-harvest losses are much reduced.

Topic: Biology, Biotechnology and Its Applications, NEET
Which of the following is the use of Nylon 6?

Options:
A Cords,Ropes
B Glass
C Coverings
D Safety equipments

The correct answer is:
Cords,Ropes

Solution:
Correct Option is : 1
Cords,Ropes

Topic: Chemistry, Polymers, NEET
Which of the following is the wrong statement?

Options:
A All the actinoid elements are radioactive
B Alkali and alkaline earth metals are s-block elements
C Chalcogens and halogens are p-block elements
D The first member of the lanthanoid series is lanthanum

The correct answer is:
The first member of the lanthanoid series is lanthanum

Solution:
Lanthanoids are 58Ce - 71Lu ( 14 elements ).
Electronic configuration of 57 La = Xe 6s 2 5d 1 and is a d-block element.

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Which of the following is thermoplastic?

Options:
A Dacron
B Nylon
C Polythene
D All of these

The correct answer is:
Polythene

Solution:
Polythene is thermoplasitc.

Topic: Chemistry, Polymers, NEET
Which of the following is toluidine?

Options:
A Methylaniline
B Methylphenol
C Methylbenzoic acid
D Aminophenol

The correct answer is:
Methylaniline

Solution:
Correct Option is : 1
Methylaniline

Topic: Chemistry, Amines, NEET
Which of the following is tridentate ligand?

Options:
A dien
B trien
C en
D dmg

The correct answer is:
dien

Solution:
Diethylene triamine (dien) is a tridentate ligand.

Topic: Chemistry, Coordination Compounds, NEET
Which of the following is true about dominant characters?

Options:
A They are expressed only in homozygous condition
B They are never expressed in heterozygous condition
C They are expressed in heterozygous condition
D They are not regulated by genes

The correct answer is:
They are expressed in heterozygous condition

Solution:
Dominant characters are expressed when the factors are in the heterozygous condition.

Topic: Biology, Principles of Inheritance and Variation, NEET
Which of the following is true about linear isotropic dielectric?

Options:
A Induced dipole moment of the linear isotropic dielectric is opposite to the direction of external electric field and proportional to the field strength
B Induced dipole moment of the linear isotropic dielectric is in the direction of the field and proportional to the field strength
C Induced dipole moment of the linear isotropic dielectric is perpendicular to the direction of the external field and proportional to the field strength
D Induced dipole moment of the linear isotropic dielectric is independent to the direction of the external field and the field strength

The correct answer is:
Induced dipole moment of the linear isotropic dielectric is in the direction of the field and proportional to the field strength

Solution:
Linear isotropic dielectric Induced dipole moment of the linear isotropic dielectric is in the direction of the field and proportional to the field strength

Topic: Physics, Electrostatics, NEET
Which of the following is true about moderate levels of sulphate in drinking water?

Options:
A They have no effect on health
B They can cause skin irritation
C They may lead to respiratory issues
D They result in dizziness

The correct answer is:
They have no effect on health

Solution:
Moderate levels of sulphate in drinking water (up to 500 ppm) are considered harmless.

Topic: Chemistry, Environmental Chemistry, NEET
Which of the following is true about Phenylketonuria?

Options:
A Mental retardation
B Accumulation of phenylalanine and phenylpyruvic acid and other derivatives
C Autosomal recessive trait
D All the above

The correct answer is:
All the above

Solution:
Phenylketonuria is an inborn error of metabolism is also inherited as the autosomal recessive trait. The affected individual lacks an enzyme that converts the amino acid phenylalnine into tyrosine, as a result it is converted into phenylpyruvic acid and other derivatives. Accumulation in brain results in mental retardation.

Topic: Biology, Principles of Inheritance and Variation, NEET
Which of the following is true about RNAi process?

Options:
A It is a method of cellular defense.
B It involves silencing of a specific mRNA due to a complementary dsRNA molecule.
C The source of complementary RNA in this process may be infection by viruses having RNA genomes.
D All are true

The correct answer is:
All are true

Solution:
RNAi is double-stranded RNA which interferes with the functioning of mRNA by preventing its transcription thus also known mRNA silencing. This double-stranded RNA is synthesized by both strands of DNA thus also known as antisense DNA technology.

Topic: Biology, Biotechnology and Its Applications, NEET
Which of the following is true about the complex [PtCl2(H2O)(NH3)] ?

Options:
A It exhibits geometrical isomerism
B It is paramagnetic complex
C Its geometry is tetrahedron
D Ptatinum is sp3 hybridised

The correct answer is:
It exhibits geometrical isomerism

Solution:
This complex exhibits geometrical isomerism as it is Ma2bc type complex. Rest other things given here are wrong about it as
[PtCl2(NH3)(HO)2] ; Pt-oxidation state +2
Valence configuration =5d8
This complex is diamagnetic as it is an inner orbital complex with dsp2 -hybridisation and square planar shape.

Topic: Chemistry, Coordination Compounds, NEET
Which of the following is true about the density of alkynes compared to water?

Options:
A Alkynes are denser than water.
B Alkynes are lighter than water.
C Alkynes have the same density as water.
D Density varies with alkynes.

The correct answer is:
Alkynes are lighter than water.

Solution:
Alkynes are generally lighter than water.

Topic: Chemistry, Hydrocarbons, NEET
Which of the following is true about the Kingdom Monera?

Options:
A It includes only animals
B It includes only plants
C It includes only fungi
D It includes only bacteria

The correct answer is:
It includes only bacteria

Solution:
"Bacteria are the sole members of the Kingdom Monera," indicating that this Kingdom contains only bacteria and no other organisms.

Topic: Biology, Biological Classification, NEET
Which of the following is true about the size of tetrahedral and octahedral voids?

Options:
A Size of tetrahedral void = Size of octahedral void
B Size of tetrahedral void > Size of octahedral void
C Size of tetrahedral void < Size of octahedral void
D Size of voids depends on the size of atoms present in packing

The correct answer is:
Size of tetrahedral void < Size of octahedral void

Solution:
Size of tetrahedral voids is always smaller than that of octahedral voids.

Topic: Chemistry, Solid State, NEET
Which of the following is true about the state of the surroundings in thermodynamics?

Options:
A It can be completely specified.
B It is irrelevant in thermodynamics.
C It is necessary to specify it to define the state of the system.
D It cannot be completely specified, and it is not necessary to do so.

The correct answer is:
It cannot be completely specified, and it is not necessary to do so.

Solution:
The state of the surroundings cannot be completely specified in thermodynamics, but it is not necessary to do so.

Topic: Chemistry, Thermodynamics (C), NEET
Which of the following is true about vitamins?

Options:
A They are synthesized by the human body.
B They are not essential for our health.
C Most vitamins can be synthesized by plants.
D Bacteria in the gut cannot produce any vitamins.

The correct answer is:
Most vitamins can be synthesized by plants.

Solution:
Plants are capable of synthesizing most vitamins, making them essential food sources for humans who cannot produce these vitamins in sufficient quantities on their own.

Topic: Chemistry, Biomolecules, NEET
Which of the following is true for disease in families A and B?

Options:
A In family A, both the parents are carrier for the sex-linked recessive disorder.
B In family B, both the parents are homozygous for the sex-linked dominant disorder.
C In family B, both the parents are heterozygous for an autosomal recessive disorder.
D In family A, both the parents are heterozygous for an autosomal recessive disorder.

The correct answer is:
In family A, both the parents are heterozygous for an autosomal recessive disorder.

Solution:
In family A, both the parents are heterozygous and the diseases represented in the pedigree are due to an autosomal recessive gene. Since parents appear normal, they are a carrier of recessive allele and passes to some of their progeny, as recessive alleles express itself in homozygous recessive condition only.

Topic: Biology, Principles of Inheritance and Variation, NEET
Which of the following is true for Golden rice?

Options:
A It is Vitamin A enriched, with a gene from daffodil
B It is pest resistance with a gene from Bacillus thuringiensis
C It is drought tolerant, developed using Agrobacterium vector
D It has yellow grains because of a gene introduced from a primitive variety of rice

The correct answer is:
It is Vitamin A enriched, with a gene from daffodil

Solution:
Golden rice is vitamin ‘A’ enriched rice it is generically modified to enhance nutritional value of food.

Golden rice a variety of Oryza sativa is produced through the genetic engineering to biosynthesize beta-carotene, a precursor of pro-vitamin A in the edible parts of rice. Golden rice is enriched by introducing three genes involved in the biosynthetic pathway for carotenoid. Thus golden rice is genetically engineered rice with greater vitamin A content.

Topic: Biology, Biotechnology and Its Applications, NEET, NEET 2019 (All India)
Which of the following is true for heterocysts?

1. They are formed in blue-green algae.

2. Heterocysts are nitrogen-fixing cells.

3. Heterocysts are formed during nitrogen starvation.

4. Anabaena and Nostoc are examples of heterocyst forming bacteria.

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

The correct answer is:
1, 2, 3, 4

Solution:
Heterocyst are differentiated cyanobacterial cell that carries out nitrogen fixation when the cells go out of nitrogen, that is during nitrogen starvation these specialized cells are formed for fixing nitrogen under aerobic conditions. Few examples of the same are : Anabaena, Nostoc and Cylindrospermum, these are cyanobacteria which produce heterocyst for nitrogen fixation.

Topic: Biology, Biological Classification, NEET
Which of the following is true for magnesium?

Options:
A It is more electropositive than sodium
B It is manufactured by electrolysis of aqueous magnesium chloride
C It is a strong reducing agent
D It resembles, in chemical properties, with its diagonally placed element boron in 13 group of the periodic table

The correct answer is:
It is a strong reducing agent

Solution:
Here statement C is incorrect as Mg is not a strong reducing agent.
A. Mg is less electropositive than Na.
B. It is manufactured by the electrolysis of moten MgCl2 containing NaCl and CaCl2 .
D. Elements of III row of periodic table never show diagonal relationship.

Topic: Chemistry, s Block Elements, NEET
Which of the following is true for nucleolus?

Options:
A It takes part in spindle formation
B It is a membrane-bound structure
C Larger nucleoli are present in dividing cells
D It is a site for active ribosomal RNA synthesis

The correct answer is:
It is a site for active ribosomal RNA synthesis

Solution:
The nucleolus is a naked, round or slightly irregular structure in the nucleus. It lacks a membrane and its contents are in direct contact with the nucleoplasm. It is a site for active ribosomal RNA (rRNA) synthesis.
Microtubules take part in the spindle formation. Mitochondria, vacuoles, and plastids. etc. are membrane-bound structures. The dividing cells possess a large number of mitochondria.

Topic: Biology, Cell - The Unit of Life, NEET, NEET 2018
Which of the following is true regarding contraceptive types and its examples?

Options:
A Barrier method: Condom, Diaphragm, Provera
B Oral contraceptive pill: Saheli, Mala-D, Triquilar
C Hormone releasing IUD: LNG-20, Progestasert, Multiload-375
D Implants: Norplant, Implanon, Depo-provera

The correct answer is:
Oral contraceptive pill: Saheli, Mala-D, Triquilar

Solution:
Barrier method includes-Condom, Diaphragm, Cervical cap/vault. OCP includes Mala-D, Mala-L, Saheli, Triquilar hormone-releasing IUDs include LNG-20, Progestasert whereas Multiload-375 is a copper releasing IUD.

Topic: Biology, Reproductive Health, NEET
Which of the following is true regarding the dissociation constant (Ka) for H2SO4?

Options:
A a1 K >10, indicating weak ionization
B a1 K = 1.2 × 10–2, indicating strong ionization
C a2 K >10, indicating weak ionization
D a2 K = 1.2 × 10–2, indicating strong ionization

The correct answer is:
a1 K = 1.2 × 10–2, indicating strong ionization

Solution:
The dissociation constant (Ka) for the first ionization step of H2SO4 is 1.2 × 10–2, indicating strong ionization.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which of the following is true regarding the given electron transport chain?
C o Q → Cyt c → Cyt aa 3 → O 2

Options:
A CoQ → Cyt c is H+ absorbing site
B aa 3 → O 2 , H+ yielding site
C CoQ → Cyt c is H+ yielding site and aa 3 → O 2 is H+ absorbing site
D No H+ is absorbed or released

The correct answer is:
CoQ → Cyt c is H+ yielding site and aa 3 → O 2 is H+ absorbing site

Solution:
In electron transport chain electrons transport through a series of carriers. H+ of NADH+ (received from krebs cycle) is accepted by FAD as a result of which FAD is reduced to FADH+ and NADH+ is oxidised to NAD. Reduced FADH+ is oxidised by CoQ, with the formation of CoQH+ . H+ ions then move to Cyt b, then Cyt c, Cyt a and Cyt aa 3 . Ultimately these H+ are accepted by O2 and H2O is formed.

Topic: Biology, Respiration in Plants, NEET