datavorous/entrance-exam-dataset huggingface dataset:
Which of the following is the correct order of melting point for isotopes of Hydrogen?

Options:
A H
B D
C D
D T

The correct answer is:
H

Solution:
Correct Option is : 1
H

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Topic: Chemistry, Hydrogen, NEET
Which of the following is the correct order of second ionisation enthalpy order of group 14 elements?

Options:
A Sn

B Ge
C C
D pb

The correct answer is:
Sn

Solution:
Correct Option is : 1
Sn

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Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
Which of the following is the correct order of third ionisation enthalpy order of group 14 elements?

Options:
A Ge
B C
C pb
D Sn

The correct answer is:
Sn

Solution:
Correct Option is : 4
Sn

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Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
Which of the following is the correct order of wavelength emitted by group 1 elements during flame test?

Options:
A Li
B Cs
C CS
D Na

The correct answer is:
Cs

Solution:
Correct Option is : 2
Cs

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Topic: Chemistry, s Block Elements, NEET
Which of the following is the correct second ionisation enthalpy order of alkaline earth metals?

Options:
A Be
B Ca
C Ba
D Mg

The correct answer is:
Ba

Solution:
Correct Option is : 3
Ba

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Topic: Chemistry, s Block Elements, NEET
Which of the following is the correct Second ionisation enthalpy order of group 15 elements?

Options:
A Sb
B Sb
C Sb
D N

The correct answer is:
Sb

Solution:
Correct Option is : 3
Sb

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Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which of the following is the correct Standard electrode potential order of alkali metals?

Options:
A Li
B Li
C Li
D Li

The correct answer is:
Li

Solution:
Correct Option is : 1
Li

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Topic: Chemistry, s Block Elements, NEET
Which of the following is the correct Standard electrode potential order of alkaline earth metals?

Options:
A Ba
B Be
C Sr
D Mg

The correct answer is:
Ba

Solution:
Correct Option is : 1
Ba

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Topic: Chemistry, s Block Elements, NEET
Which of the following is the correct statement about spermatogenesis?

Options:
A Spermatogonia have 46 chromosomes and always undergo meiotic cell division.
B Primary spermatocytes divide by mitosis.
C Secondary spermatocytes have 23 chromosomes and undergo second meiotic division
D Spermatozoa are transformed into spermatids.

The correct answer is:
Secondary spermatocytes have 23 chromosomes and undergo second meiotic division

Solution:
Spermatogenesis is the formation of sperms that takes place in seminiferous tubules. It begins with growth phase of germ cells i.e. spermatogonia. These cells are formed in yolk sac and are transferred to testes. Spermatogonia being germ cells have 46 chromosomes and these undergo mitosis and growth to form primary spermatocytes. These then undergo meiosis-I to form secondary spermatocytes which then undergo meiosis-II to form spermatids. These spermatids then transform into spermatozoa and then sperms. Primary spermatocytes are formed due to mitosis and hence contain 46 chromosomes while secondary spermatocytes have 23 chromosomes.

Topic: Biology, Human Reproduction, NEET
Which of the following is the correct Third ionisation enthalpy order of group 15 elements?

Options:
A Sb
B N

C Sb
D Sb

The correct answer is:
Sb

Solution:
Correct Option is : 4
Sb

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Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which of the following is the final pressure of the gas in cylinders A and B when the stopcock is suddenly opened, given that A contains a gas at standard temperature and pressure, and B is completely evacuated, with the entire system thermally insulated?

Options:
A 0.5 atm
B 1.0 atm
C 1.5 atm
D 2.0 atm

The correct answer is:
0.5 atm

Solution:
Correct Option is : (A)
0.5 atm

Topic: Chemistry, Thermodynamics, NEET
Which of the following is the fundamental force in nature?

Options:
A Normal force
B Frictional force
C Spring force
D Strong nuclear force

The correct answer is:
Strong nuclear force

Solution:
Strong nuclear force, along with weak nuclear force, gravitational force and Electromagnetic force are fundamental force in nature.

Topic: Physics, Laws of Motion, AP EAMCET, AP EAMCET 2022 (06 Jul Shift 1)
Which of the following is the infective stage of Plasmodium in the secondary host?

Options:
A Trophozoite
B Sporozoite
C Microgametocyte
D Merozoite

The correct answer is:
Sporozoite

Solution:
Life cycle of Plasmodium requires two hosts to complete its life cycle: human (host) and female Anopheles mosquito (vector).
A. Female Anopheles mosquito bites the human and releases sporozoites in the blood.
B. Multiplication of parasites in the liver cells.
C. Entry of parasite into RBCs → Rupture of RBCs → Release of a toxic substance -Haemozoin → Haemozoin causes chills and high fever repeating in every 3 to 4 days.
D. Female Anopheles mosquito bites an infected person → Parasites enter the mosquito's body (gut) and undergo further development.
E. Multiplication of parasites within the body of mosquito to form sporozoites → Sporozoites are stored in the salivary glands.
F. Step A–E is repeated.

Topic: Biology, Human Health and Diseases, NEET
Which of the following is the least and most abundant leucocytes in human blood, respectively?

Options:
A Basophils ; Neutrophils
B Neutrophils ; Basophils
C Eosinophils; Neutrophils
D Basophils; Lymphocytes

The correct answer is:
Basophils ; Neutrophils

Solution:
The correct ascending order of different leucocytes of blood is:
Basophils > Eosinophils > Monocytes > Lymphocytes > Neutrophils
Neutrophils are about 60%–65% of total WBCs, and are major phagocytic cells of blood.

Topic: Biology, Body Fluids and Circulation, NEET
Which of the following is the least likely to be involved in stabilizing the three-dimensional folding of most proteins?

Options:
A Hydrogen bonds
B Electrostatic interaction
C Hydrophobic interaction
D Ester bonds

The correct answer is:
Ester bonds

Solution:
Tertiary structure: The overall shape of a protein molecule; and the spatial relationship of the secondary structures to one another; is called the tertiary structure of the protein. In other words, the various folds which give three-dimensional appearances to protein form its tertiary structure. This structure is stabilised by the various bonds like hydrogen bond, disulphide bond, electrostatic bond, hydrophobic bonds, Van der Waals forces and peptide bond.

An ester bond is formed between sugar and phosphate in a nucleotide. DNA and RNA are composed of nucleotides that are linked to one another in a chain by chemical bonds, called ester bonds, between the sugar base of one nucleotide and the phosphate group of the adjacent nucleotide. This bond is least likely to be involved in stabilizing of the protein.

Topic: Biology, Biomolecules (B), NEET, NEET 2016 (Phase 2)
Which of the following is the most abundant of all the cells found in the blood of humans?

Options:
A Thrombocytes
B Erythrocytes
C Platelets
D Leucocytes

The correct answer is:
Erythrocytes

Solution:
Erythrocytes or RBC are the most abundant of all the cells in blood of human. On an average, the no. of different cells in a healthy adult human are: Erythrocytes/RBC: 5 millions to 5.5 millions per cubic mm. Platelets/Thrombocytes: 1.5 lakhs to 3.5 lakhs per cubic mm.Leucocytes/WBC: 6000 to 8000 per cubic mm.

Topic: Biology, Body Fluids and Circulation, NEET
Which of the following is the most abundant protein in animals?

Options:
A Haemoglobin
B Keratin
C RuBisCO
D Collagen

The correct answer is:
Collagen

Solution:
Collagen is the most abundant protein in the animal world and Ribulose bisphosphate Carboxylase-Oxygenase (RuBisCO) is the most abundant protein in the whole of the biosphere.

Topic: Biology, Structural Organisation in Animals, NEET
Which of the following is the most abundant protein in the whole of the biosphere?

Options:
A Collagen
B Transport Proteins
C Hormones
D Ribulose bisphosphate Carboxylase-Oxygenase (RuBisCO)

The correct answer is:
Ribulose bisphosphate Carboxylase-Oxygenase (RuBisCO)

Solution:
RuBisCO is the most abundant protein in the whole of the biosphere, making it the correct answer. Collagen is the most abundant protein in the animal world, while transport proteins, hormones, and enzymes also have specific functions in living organisms

Topic: Biology, Biomolecules (B), NEET
Which of the following is the most important cause for animals and plants being driven to extinction?

Options:
A Over-exploitation
B Alien species invasion
C Habitat loss and fragmentation
D Co-extinctions

The correct answer is:
Habitat loss and fragmentation

Solution:
From the evil quartet, habitat loss and fragmentation due to over population, urbanization and industrialization is the major cause of extinction. Loss of habitat and fragmentation endangers the survival of wildlife species by exposing them to a higher degree of pollution. Tropical rainforests, previously covering an area of 14%, have been reduced to 6% in recent times. This has led to the extinction of several species over the last few centuries.

Topic: Biology, Biodiversity and its Conservation, NEET, NEET 2016 (Phase 1)
Which of the following is the most stable carbanion?

Options:
A CH3CâH2
B (CH 3 ) 2 C H ⊖
C (CH3)3C-
D C6H5C-H2

The correct answer is:
C6H5C-H2

Solution:
Benzyl carbanion is stabilized by resonance.

electron-releasing groups (+I groups) make the carbanion less stable. Thus, a primary carbanion is more stable than secondary carbanion, which in turn, is more stable than a tertiary, because of +I effect associated with alkyl groups. Decreasing order of stabilities of carbanion is

Electron-attracting groups (-I groups) like -NO2,-Br will stabilize carbanion by partial removal of the negative charge on the carbon.

Topic: Chemistry, General Organic Chemistry, 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:
Amino acids are the monomers that make up proteins. Each amino acid has the same fundamental structure, which consists of a central carbon atom, also known as the alpha $(\alpha)$ carbon, bonded to an amino group $\left(\mathrm{NH}_2\right)$, a carboxyl group $(\mathrm{COOH})$, and to a hydrogen atom. Glycine is the simplest of all amino acids as R-group is hydrogen.

Topic: Biology, Biomolecules (B), NEET, NEET 2005
Which of the following is true about the elements present in a sample of earth's crust and living tissue?

Options:
A All the elements in living tissue are not present in earth's crust
B The relative abundance of carbon and hydrogen is higher in earth's crust than in living tissue
C The elements present in both earth's crust and living tissue have the same relative abundance of carbon and hydrogen
D The relative abundance of carbon and hydrogen is higher in living tissue than in earth's crust

The correct answer is:
The relative abundance of carbon and hydrogen is higher in living tissue than in earth's crust

Solution:
A closer examination reveals that the relative abundance of carbon and hydrogen with respect to other elements is higher in any living organism than in earth's crust.

Topic: Biology, Biomolecules (B), NEET
Which of the following is true for excretion in humans?

Options:
A Glucose and amino acids are reabsorbed in PCT by simple diffusion.
B DCT is impermeable to water.
C On an average, $25-30 \mathrm{gm}$ of urea is excreted out per day
D Maximum reabsorption occurs in the loop of Henle.

The correct answer is:
On an average, $25-30 \mathrm{gm}$ of urea is excreted out per day

Solution:
Glucose and amino acids are reabsorbed in PCT by secondary active transport. Water, sodium and chloride ions are reabsorbed in DCT. It is permeable to water. Maximum reabsorption takes place within the PCT. Humans are ureotelic and excrete out 25-30 gm of urea per day.

Topic: Biology, Excretory Products and their Elimination, AIIMS, AIIMS 2013
Which of the following is true regarding the reduction of nitriles to primary amines?

Options:
A It requires a strong acid catalyst.
B It proceeds via a one-step reaction.
C It involves the addition of oxygen.
D It results in the formation of secondary amines.

The correct answer is:
It proceeds via a one-step reaction.

Solution:
The reduction of nitriles to primary amines typically proceeds via a one-step reaction.

Topic: Chemistry, Amines, NEET
Which of the following is used for distinguishing primary, secondary and tertiary alcohols?

Options:
A Victor Meyer test
B Beilstein test
C Hoffmann test
D Fehling’s Solution: test

The correct answer is:
Victor Meyer test

Solution:
Victor Meyer test is used to distinguish primary, secondary and tertiary alcohols as they give different colours during this test.
Primary alcohol gives red colour, Secondary alcohol gives blue colour and tertiary alcohol gives no colour when the reaction is performed.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
Which of the following is without exception in angiosperms?

Options:
A Presence of vessels
B Double fertilization
C Secondary growth
D Autotrophic nutrition

The correct answer is:
Double fertilization

Solution:
Only angiosperms have double fertilization, in which the secondary nucleus forms a triploid cell to produce endosperm and the egg transforms into a diploid zygote to form embryo.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET, NEET 2002
Which of the following is Wurtz-Fittig reaction?

Options:
A
B
C
D

The correct answer is:

Solution:
Homologues of benzene may be prepared by warming an ethereal solution of an alkyl or aryl halide with sodium

Topic: Chemistry, Hydrocarbons, NEET
Which of the following is/are example(s) of passive immunity?

Options:
A Antibodies present in colostrum
B Antibodies received by foetus through placenta
C Antibodies against the snake venom injected in patients
D All of these

The correct answer is:
All of these

Solution:
When ready-made antibodies are directly given to protect the body against foreign agents, it is called passive immunity. The yellowish fluid colostrum secreted by the mother during the initial days of lactation has abundant antibodies (IgA) to protect the infant. The foetus also receives some antibodies from their mother, through the placenta during pregnancy. In the case of snake bites, the injection which is given to the patients contains preformed antibodies against the snake venom.

Topic: Biology, Human Health and Diseases, NEET
Which of the following is/are the structural character/s of an ecosystem?

Dominance, Species composition, Stratification, Nutrient cycle, Food Web complexity, Productivity

Options:
A Dominance, Species composition, Stratification
B Nutrient cycle, Food Web complexity, Productivity
C Nutrient cycle, Dominance, Productivity
D Dominance, Nutrient cycle, Species composition

The correct answer is:
Dominance, Species composition, Stratification

Solution:
Dominance is the abundance of a species in an ecosystem, it affects the functioning of the ecosystem. Species composition is the identification and enumeration of different types of species present in the ecosystem. Vertical distribution of different species forming a canopy structure is called stratification. These are three important structural components of the ecosystem.

Topic: Biology, Ecosystem, NEET
Which of the following isotopes of carbon has highest relative abundance ?

Options:
A Carbon 12
B Carbon 13
C Carbon 14
D All of the above

The correct answer is:
Carbon 12

Solution:
Correct Option is : 1
Carbon 12

Topic: Chemistry, Some Basic Concepts of Chemistry, NEET
Which of the following layers in an antral follicle is acellular?

Options:
A Theca interna
B Stroma
C Zona pellucida
D Granulosa

The correct answer is:
Zona pellucida

Solution:
The secondary oocyte has a membrane called zona pellucida surrounding it. This thick coat of zona pellucida is composed of glycoproteins and synthesized by the oocyte. Later, the granulosa cells lying in close vicinity of the ovum and zona pellucida become elongated to form the corona radiate. Theca interna is the layer of Graafian follicle and it produces estrogen.

Topic: Biology, Human Reproduction, NEET, NEET 2015 (Phase 2)
Which of the following ligands has a fixed coordination number equal to its secondary valence?

Options:
A Unidentate
B Didendate
C Polydentate
D Hexadentate

The correct answer is:
Polydentate

Solution:
Polydentate ligands have a fixed coordination number equal to their secondary valence, which is determined by the number of donor atoms they can use to bind to a central metal ion.

Topic: Chemistry, Coordination Compounds, NEET
Which of the following metals has the largest abundance in the earth's crust ?

Options:
A Aluminium
B Calcium
C Magnesium
D Sodium

The correct answer is:
Aluminium

Solution:
No Solution Available

Topic: Chemistry, General Principles and Processes of Isolation of Metals, WBJEE, WBJEE 2010
Which of the following molecules is present in photochemical smog?

Options:
A $\mathrm{SO}_2$
B $\mathrm{NO}_2$
C $\mathrm{CO}_2$
D $\mathrm{CO}$

The correct answer is:
$\mathrm{NO}_2$

Solution:
Photochemical smog is a type of smog produced, when ultraviolet light from the sun reacts with nitrogen oxides in the atomosphere. It is visible as a brown haze and is most prominent during the morning and afternoon, especially in densey populated, warm cities.
Photochemical smog = mixture of ozone, nitric acid, aldehydes, peroxyacyl nitrates and secondary pollutants.
Hence, correct option is $\mathrm{NO}_2$.

Topic: Chemistry, Environmental Chemistry, TS EAMCET, TS EAMCET 2020 (11 Sep Shift 1)
Which of the following occur at the same trophic level?

Options:
A Deer and Bee
B Cow and Crow
C Earthworm and Frog
D Snake and Vulture

The correct answer is:
Deer and Bee

Solution:
The step or position in a nutritive series like food chain is referred to as trophic level.
There are different trophic levels in an ecosystem and food chain. The producers (photosynthetic organisms) form the first trophic level and consumers take up the successive trophic levels.
The plants or producers take up the primary trophic level. The animals that consume plant/producers take up the secondary trophic levels like deer, cow, bee, earthworm. Animals feeding on the animals of secondary trophic level are considered tertiary trophic level. Snake, frog, crow.

Topic: Biology, Ecosystem, NEET
Which of the following occurs due to monosomy of sex chromosome?

Options:
A Down’s syndrome
B Turner’s syndrome
C Haemophilia
D Sickle cell anaemia

The correct answer is:
Turner’s syndrome

Solution:
Turner's syndrome is caused due to the absence of one of the $\mathrm{X}$ chromosomes i.e., 45 chromosomes total with sex chromosomes as XO. Such females are sterile as ovaries are rudimentary. Besides this, other features include lack of other secondary sexual characters, etc.

Topic: Biology, Principles of Inheritance and Variation, AIIMS, AIIMS 2014
Which of the following option about various types of antibodies is correct?

Options:
A The most abundant antibody is IgM and the antibody which is largest in size is IgG
B The most abundant antibody is IgG and the antibody which is largest in size is IgM
C IgA is the most abundant antibody as well as it appears as pentamer.
D IgG is the most abundant antibody found in colostrum, while IgE is found in the case of hypersensitivity.

The correct answer is:
The most abundant antibody is IgG and the antibody which is largest in size is IgM

Solution:
There are five types of antibodies IgG, IgA, IgM, IgD, and IgE. IgG is the most abundant antibody-forming 80% of the total antibodies. It is the only antibody that can pass through the placenta. It is formed in the secondary immune response. It has a structure of a typical antibody having 4 peptides arranged in a Y shape manner. IgM is the largest in size (5 times greater than IgG). It is formed in the primary immune response. It is a pentamer having 5 such Y shaped structures.

Topic: Biology, Human Health and Diseases, NEET
Which of the following option is incorrect w.r.t. to the given diagram?

Options:
A Well exposed stamens
B Pollen grains are light and sticky
C Feathery stigma to trap pollen grains
D It is quite common in grasses

The correct answer is:
Pollen grains are light and sticky

Solution:
Anemophily is characterized by the presence of well-exposed or versatile stamens, the pollen grains are light and non-sticky, presence of feathery stigma which enhances the pollination by allowing pollen grains to get trapped and commonly observed in gymnosperms, grasses, sedges, rushes etc.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
Which of the following options CORRECTLY shows the sequence of different tissues of the periderm starting from the periphery?

Options:
A Phellogen Phellem Phelloderm
B Phellem Phelloderm Phellogen
C Phellem Phellogen Phelloderm
D Phelloderm Phellogen Phellem

The correct answer is:
Phellem Phellogen Phelloderm

Solution:
The cylindrical tissue that forms the protective covering of stems and roots during the early secondary growth of perennial plants is known as periderm. They are seen only in plants that show secondary growth and these tissues replace the epidermis of the same plant. Phellem or the cork is present in the outer cortical cells and prevents the rupturing of the outer tissues. Phellogen is the cork cambium and is found on the side of the phellem. Phelloderm is the secondary cortex which is produced in the inner side of the phellogen.

Topic: Biology, Anatomy of Flowering Plants, NEET