datavorous/entrance-exam-dataset huggingface dataset:
Which of the following is intensive property

Options:
A Enthalpy
B Volume
C Mass
D Surface tension

The correct answer is:
Surface tension

Solution:
Surface tension is an intensive property which do not depend upon the quantity of matter present in the system.

Topic: Chemistry, Thermodynamics (C), NEET
Which of the following is involved in a sexual mode of reproduction?

Options:
A conidiospores
B sporangiospores
C zoospores
D zygospore

The correct answer is:
zygospore

Solution:
Zygospore is a reproductive stage of fungi and many protists which is in diploid stage. Zygospores are formed in the zygosporangia of fungi and involved in sexual reproduction process. Phycomycetes show formation of zygospore formed by fusion of the gametes.

Topic: Biology, Reproduction in Organisms, NEET
Which of the following is involved in the extraction of Ag from argentite?

Options:
A [Ag(NH3)2]+
B [Ag(SCN)4]3+
C [Ag(CN)2]-
D [AgCl2]-

The correct answer is:
[Ag(CN)2]-

Solution:
Ag 2 S + 4 NaCN → Air 2 Na[ Ag(CN) 2 ]+  Na 2 S

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
Which of the following is involved in the synthesis of the plant hormone IAA and the vasoconstrictor serotonin?

Options:
A Tryptophan
B Tyrosine
C Phenylalamine
D None of these

The correct answer is:
Tryptophan

Solution:
The amino acid tryptophan is a precursor for the biosynthesis of indole 3 acetic acid (IAA) and the tryptophan is the sole precursor of synthesis of serotonin which is a vasoconstrictor.

Topic: Chemistry, Biomolecules, NEET
Which of the following is isoelectronic?

Options:
A $\mathrm{CO}_2, \mathrm{NO}_2$
B $\mathrm{NO}_2^{-}, \mathrm{CO}_2$
C $\mathrm{CN}^{-}, \mathrm{CO}$
D $\mathrm{SO}_2, \mathrm{CO}_2$

The correct answer is:
$\mathrm{CN}^{-}, \mathrm{CO}$

Solution:
In $\mathrm{CN}^{-}$the number of electrons $=6$ $+7+1=14$
In $\mathrm{CO}$ the number of electrons $=6+$ $8=14$

Topic: Chemistry, Structure of Atom, NEET, NEET 2002
Which of the following is known as ‘acetone’?

Options:
A

B

C

D

The correct answer is:

Solution:
Correct Option is : 3

Topic: Chemistry, General Organic Chemistry, NEET
Which of the following is known as gem- dibromide?

Options:
A CH3CH(Br)CH(Br)CH3
B CH2(Br)CH2CH2
C CH2BrCH2Br
D CH3CBr2CH3

The correct answer is:
CH3CBr2CH3

Solution:
Gem-dihalides are those in which two halogen atoms are attached on the same carbon atom.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
Which of the following is known as Hinsberg reagent?

Options:
A COOH-COOH
B COCl | COCl
C C6H5-SO2-Cl
D C6H5-CO-Cl

The correct answer is:
C6H5-SO2-Cl

Solution:
Benzene sulphonyl chloride (C6H5-SO2-Cl) is Hinsberg reagent.

Topic: Chemistry, Amines, NEET
Which of the following is known as ortho sulphobenzimide?

Options:
A Aspartame
B Saccharin
C Sucralose
D Alitame

The correct answer is:
Sucralose

Solution:
Correct Option is : 3
Sucralose

Topic: Chemistry, Chemistry in Everyday Life, NEET
Which of the following is known as the lungs of the planet earth?

Options:
A Tropical rain forest
B Amazonian rain forest
C Western Ghats
D The Himalayan range

The correct answer is:
Amazonian rain forest

Solution:
Amazonian rain forest are tropical rain forest which are very large and dense, they occupy very large area in tropical region and generates large amount of oxygen through photosynthesis thus are commonly referred as lungs of planet earth.

Topic: Biology, Biodiversity and its Conservation, NEET
Which of the following is label “A”

Options:
A None of these
B Embryo
C Trophoblast
D Plasma membrane

The correct answer is:
Trophoblast

Solution:
A in the given figure is Trophoblast.

Trophoblasts are cells forming the outer layer of a blastocyst, which provide nutrients to the embryo and develop into a large part of the placenta.

Topic: Biology, Human Reproduction, NEET
Which of the following is least likely to behave as Lewis base?

Options:
A $\mathrm{NH}_3$
B $\mathrm{BF}_3$
C $\mathrm{OH}^{-}$
D $\mathrm{H}_2 \mathrm{O}$

The correct answer is:
$\mathrm{BF}_3$

Solution:
$\mathrm{BF}_3$ is an electron deficient species, thus behaves like a Lewis acid.

Topic: Chemistry, Ionic Equilibrium, NEET, NEET 2011 (Screening)
Which of the following is least reactive in a nucleophilic substitution reaction?

Options:
A $\left(\mathrm{CH}_3\right)_3 \mathrm{C}-\mathrm{Cl}$
B $\mathrm{CH}_2=\mathrm{CHCl}$
C $\mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CL}$
D $\mathrm{CH}_2=\mathrm{CHCH}_2 \mathrm{Cl}$

The correct answer is:
$\mathrm{CH}_2=\mathrm{CHCl}$

Solution:
Chlorine of vinyl chloride $\left(\mathrm{CH}_2=\right.$ $\mathrm{CHCl}$ ) is non-reactive (less reactive) towards nucleophile in nucleophilic substitution reaction because it shows resonance due to $+\mathrm{M}$ effect of $-\mathrm{Cl}$ atom.
In structure II, Cl-atom have positive charge and partial double bond character with $\mathrm{C}$ of vinyl group, so it is more tightly attracted towards the nucleus and it does not get replaced by nucleophile in $\mathrm{S}_{\mathrm{N}}$ reaction.
Related Theory
$s p^3$-hybridized electrophile must have a leaving group $(\mathrm{X})$ in order for the reaction to take place.

Topic: Chemistry, Hydrocarbons, NEET, NEET 2004
Which of the following is least soluble in water?

Options:
A AgCl
B AgBr
C AgI
D AgF

The correct answer is:
AgI

Solution:
According to Fajan's rules:
Polarization ∝ Size of anion ∝ covalent character
The solubility order is: AgF>AgCl>AgBr>AgI .

Topic: Chemistry, d and f Block Elements, NEET
Which of the following is least soluble?

Options:
A NiS(Ksp=3×10-21)
B FeS(Ksp=4×10-19)
C MnS(Ksp=7×10-16)
D PtS(Ksp=8×10-73)

The correct answer is:
PtS(Ksp=8×10-73)

Solution:
Solubility depends on the solubility product greater the solubility and greater the solubility product.
So PtS(Ksp=8×10-73) is least soluble here and solubility order is
MnS > FeS > NiS > PtS

Topic: Chemistry, Ionic Equilibrium, NEET
Which of the following is least stable

Options:
A BeH2
B MgH2
C CaH2
D BaH2

The correct answer is:
BaH2

Solution:
The stability of alkanline earthmetal hydrides decreases down the group as with the increase in size of cation the strength of M-H decreases. so, BeH2 is most stable while BaH2 is least stable.

Topic: Chemistry, s Block Elements, NEET
Which of the following is made up of dead cells?

Options:
A Xylem parenchyma
B Collenchyma
C Phellem
D Phloem

The correct answer is:
Phellem

Solution:
Cork cambium undergoes periclinal division and cuts off thick walled suberised dead cork cells towards outside and it cuts off thin walled living cells i.e., phelloderm on an inner side.

Xylem parenchyma is the only living component of xylem. Phloem is a living, complex permanent tissue where only Bast fibres are dead. Collenchyma is called as living, mechanical, simple permanent tissue.

Topic: Biology, Anatomy of Flowering Plants, NEET, NEET 2017
Which of the following is made up of dead cells?

Options:
A Collenchyma
B Phellem
C Sieve tube
D Xylem parenchyma

The correct answer is:
Phellem

Solution:
Collenchyma is living mechanical tissue. Phellem or cork is made up of dead cell and its cell wall is deposited with suberin which makes it impermeable. Sieve tube elements are long, tube-like structures, arranged longitudinally and are associated with the companion cells. Their end walls are perforated in a sieve-like manner to form the sieve plates. A mature sieve element possesses a peripheral cytoplasm and a large vacuole but lacks a nucleus. The functions of sieve tubes are controlled by the nucleus of companion cells. Xylem parenchyma are living parenchyma cells associated with xylem to store water and minerals.

Topic: Biology, Anatomy of Flowering Plants, NEET
Which of the following is manufactured by CDRI Lucknow?

Options:
A Non steroidal contraceptive pill
B An intrauterine device
C A Hormonal implant
D A Lie Detector machine

The correct answer is:
Non steroidal contraceptive pill

Solution:
The first non-steroidal once a week pill manufactured by CDRI Lucknow, is marketed under trade name of Saheli and Centchroman (INN: Or meloxifene) is the first non-steroidal oral contraceptive pill any where in the world.

Topic: Biology, Reproductive Health, NEET
Which of the following is metabolic antitranspirants?

Options:
A PMA, CO2
B Colorless plastics and waxes
C Aspirin, ABA
D Both PMA, CO2 and Aspirin, ABA

The correct answer is:
Both PMA, CO2 and Aspirin, ABA

Solution:
Antitranspirants are compounds applied to the leaves of plants to reduce transpiration. Metabolic antitranspirant reduce the stomatal opening and increase the leaf resistance to water vapour diffusion without affecting carbon dioxide uptake. Examples include phenylmercury acetate, abscisic acid (ABA), and aspirin, CO2.

Topic: Biology, Transport in Plants, NEET
Which of the following is MISMATCHED pair of disease and its related symptom?

Options:
A

Disease	Symptom
Phenylketonuria	Urine turns black on exposure to air

B

Disease	Symptom
Down’s syndrome	Physical and mental retardation

C

Disease	Symptom
Klinefelter’s syndrome	Sterile males

D

Disease	Symptom
Turner’s syndrome	Sterile females

The correct answer is:

Disease	Symptom
Phenylketonuria	Urine turns black on exposure to air

Solution:
Chromosomal disorder occurs when there is addition or deletion of chromosome in the individual. In case of trisomy of the 21st chromosome causes Down's syndrome. This results in mental retardation and physical development is retarded as well. The palm of the individual is broad with characteristic palm crease.
Klinefelter's syndrome is a condition where individual has the chromosomal combination as 44+XXY with an extra X chromosome. Such individual is sterile. Also, individual has an overall masculine development with certain feminine characteristics.
Turner's syndrome occurs when the chromosomal count is 44+ X0 , where the last pair has a missing chromosome. The individual is sterile female with webbed neck.
Phenylketonuria is an inborn error of metabolism where the individual has reduced metabolism of the amino acid phenylalanine. Such mutation leads to mental retardation, with reduction in hair and skin pigmentation.
Black urine due to exposure to air occurs in a genetic condition called Alkaptonuria.

Topic: Biology, Principles of Inheritance and Variation, NEET
Which of the following is mismatched?

Options:
A Parathormone - Decreases blood calcium level.
B Thyroxine - Increases BMR
C Growth hormone - Promotes the physical growth of body.
D Insulin - Results in hypoglycemia.

The correct answer is:
Parathormone - Decreases blood calcium level.

Solution:
Functions of Parathormone (PTH) :
A. PTH increases the process of bone resorption or dissolution (demineralization) of bone.
B. PTH stimulates the reabsorption of Ca2+ by the renal tubules.
C. PTH increases the absorption of Ca2+ from digested food.
D. All the above actions of PTH increase the blood Ca2+ levels, thus PTH is a hypercalcemic hormone.

Topic: Biology, Chemical Coordination and Integration, NEET
Which of the following is more basic than aniline?

Options:
A benzylamine
B diphenylamine
C triphenylamine
D p-nitroaniline

The correct answer is:
benzylamine

Solution:
Benzyl amine is more basic than aniline because the benzyl group is an electron-donating group on account of the + I effect. So, it is capable of increasing the electron density of $\mathrm{N}$ of the $-\mathrm{NH}_2$ group. Thus, because of the higher electron density, the rate of donation of a free pair of electrons is increased, i.e., the basic character is higher. Phenyl and nitro groups are electron attractive groups, so they are able to decrease the electron density of $\mathrm{N}$ of $-\mathrm{NH}_2$ group. Hence, they are less basic than aniline.
A Caution
Benzylamine has localised lone pair therefore it is more basic.

Topic: Chemistry, Amines, NEET, NEET 2006
Which of the following is more close to a black body?

Options:
A Black board paint
B Green leaves
C Black holes
D Red roses

The correct answer is:
Black board paint

Solution:
A good absorber is also a good emitter. So blackbody absorbs all the light but also emits whereas black holes do not emit 99% of radiations.

Topic: Physics, Thermal Properties of Matter, NEET
Which of the following is most acidic here?

Options:
A
B
C
D

The correct answer is:

Solution:
Acidic nature ∝ E.W.G. (-I, -R).

Topic: Chemistry, General Organic Chemistry, NEET
Which of the following is most easily hydrolysed with aqueous KOH solution?

Options:
A CH3Cl
B C6H5CH2Cl
C CH2=CHCl
D

The correct answer is:

Solution:
SN 1 âStability of carbocation
is more stable.
Carbocation due to delocalisation or 3 + hyperconjugation

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
Which of the following is most soluble in water?

Options:
A ZnS;(Ksp=7Ã10-16)
B Fe(OH)3;(Ksp=6Ã10-38)
C Ba3(PO4)2;(Ksp=6×10-39)
D Ag3PO4;(Ksp=1.8Ã10-18)

The correct answer is:
Ag3PO4;(Ksp=1.8×10-18)

Solution:
Here Ag3PO4 is most soluble as it has highest Ksp
Ag3PO4S→3Ag+3S+PO43-S
Ksp=[Ag+]3[PO43-]
Ksp=27S4
S=Ksp271/4

Topic: Chemistry, Ionic Equilibrium, NEET
Which of the following is non-flagellate in nature?

Options:
A Chlorella
B Ulothrix
C Spirogyra
D All of the above

The correct answer is:
All of the above

Solution:
Chlorella, Ulothrix, Spirogyra are non-motile, unicellular green algae. Chlorella consists of photosynthetic pigments-chlorophyll A & B present in its chloroplast. It is a very good source of protein and vitamins and is used as a food supplement. Ulothrix and Spirogyra are the filamentous forms of algae wherein the sexual reproduction take place with the help of flagellated gametes in Ulothrix and non-flagellated gametes in spirogyra. All the three algae are members of Chlorophyceae which are non-flagellated and non-motile.

Topic: Biology, Plant Kingdom, NEET
Which of the following is not a bacterial disease?

Options:
A Enteric fever
B Jaundice
C Bull neck disease
D Lock jaw disease

The correct answer is:
Jaundice

Solution:
Typhoid is a bacterial infection that can lead to high fever, diarrhea, and vomiting. It is caused by the bacteria Salmonella typhi and it is also known as enteric fever. Jaundice is caused by the Hepatitis virus. It is an inflammatory condition of the liver. Tetanus (lockjaw) is a disease caused by a bacterial toxin produced by Clostridium tetani that affects the nervous system with painful muscle contractions, particularly at the jaw and neck muscles. Diphtheria is caused by the bacterium Corneybacterium diphtheriae. The common symptoms includes a swollen neck, and referred to as a bull neck.

Topic: Biology, Human Health and Diseases, NEET
Which of the following is not a barrier method of contraception?

Options:
A Condoms
B Diaphragms
C Lactational amenorrhea method
D Cervical caps

The correct answer is:
Lactational amenorrhea method

Solution:
Lactational amenorrhea method is a natural method of contraception and not a barrier methoD) Barrier methods such as condoms, diaphragms, cervical caps, and vaults physically prevent the meeting of ovum and sperms.

Topic: Biology, Reproductive Health, NEET
Which of the following is NOT a base found in DNA?

Options:
A Adenine (
A)
B Guanine (G)
C Cytosine (
C)
D Uracil (U)

The correct answer is:
Uracil (U)

Solution:
Uracil is not a base found in DNA; it is a base found in RNA.

Topic: Chemistry, Biomolecules, NEET
Which of the following is not a Basidiomycetes?

Options:
A Agaricus
B Ustilago
C Aspergillus
D Puccinia

The correct answer is:
Aspergillus

Solution:
Aspergillus is a member of ascomycetes which is commonly called sac fungi. Agaricus (commonly called as a mushroom), Ustilago (commonly called as smut fungi) and Puccinia (commonly as rust fungi) are members of basidiomycetes.

Topic: Biology, Biological Classification, NEET
Which of the following is not a biodegradable detergent?

Options:
A
B
C
D All of these

The correct answer is:

Solution:
Here is not a biodegradable detergent as when alkyl group of RSO3Na is branched chain the detergent is not biodegradable.

Topic: Chemistry, Chemistry in Everyday Life, NEET
Which of the following is not a broad spectrum antibiotic

Options:
A Tetracycline
B Chloromycetin
C Penicillin
D None of these

The correct answer is:
Penicillin

Solution:
Penicillinis not a broad spectrum antibiotic since it is active against infections caused by gram positive bacteria only.

Topic: Chemistry, Chemistry in Everyday Life, NEET
Which of the following is not a carbonate ore?

Options:
A Bauxite
B Siderite
C Malachite
D Calamine

The correct answer is:
Bauxite

Solution:
Correct Option is : 1
Bauxite

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
Which of the following is not a cause for loss of biodiversity?

Options:
A Destruction of habitat
B Invasion by alien species
C Keeping animals in zoological parks
D Over-exploitation of natural resources

The correct answer is:
Keeping animals in zoological parks

Solution:
Destruction of habitat, invasion by alien species, and over-exploitation, of natural resources are cause for loss of biodiversity.

Topic: Biology, Biodiversity and its Conservation, NEET
Which of the following is not a cause for loss of biodiversity?

Options:
A Destruction of habitat
B Invasion by alien species
C Keeping animals in zoological parks
D Over-exploitation of natural resources

The correct answer is:
Keeping animals in zoological parks

Solution:
Biodiversity includes all the flora and fauna on Earth. All the varieties of organisms come under biodiversity.
Decline in number, genetic variability and variety of species in a give area is deemed as loss of biodiversity. It can be due to many factors like destruction of habitat, over use of resources, invasion by non-indigenous species and also, anthropogenic activities.
Zoological parks, sanctuary, afforestation are means of conserving biodiversity.

Topic: Biology, Biodiversity and its Conservation, NEET
Which of the following is not a cell inclusion?

Options:
A Volutin granule
B Glycocalyx
C Pigment
D Vacuole

The correct answer is:
Glycocalyx

Solution:
Glycocalyx is a glycoprotein and polysaccharide covering that surrounds the cell membrane and acts as an identifier.

Topic: Biology, Cell - The Unit of Life, NEET
Which of the following is not a character of r-selected species?

Options:
A Small sized adult
B Long generation time
C A high energy allocation to reproduction
D Maximum population growth

The correct answer is:
Long generation time

Solution:
r-selected species are those that emphasize high growth rates, typically exploit less-crowded ecological niches, and produce many offspring, each of which has a relatively low probability of surviving to adulthood (i.e., high r, low K). Because of high growth rate their generation time is less.

Topic: Biology, Organisms and Populations, NEET
Which of the following is not a character of the echinoderm life cycle?

Options:
A Radial symmetry
B Bilateral symmetry
C Asymmetrical
D Both (A) and (C)

The correct answer is:
Asymmetrical

Solution:
The adult echinoderms are radially symmetrical but larvae are bilaterally symmetrical.

Topic: Biology, Animal Kingdom, NEET
Which of the following is not a characteristic feature during mitosis in somatic cells?

Options:
A Spindle fibres
B Disappearance of nucleolus
C Chromosome movement
D Synapsis

The correct answer is:
Synapsis

Solution:
Synapsis is a pairing of homologous chromosomes which occurs during meiosis (Zygotene sub-stage of Prophase-I) but it is absent in mitosis.

Chromosome pairing refers to the lengthwise alignment of homologous chromosomes at the prophase stage of meiosis. Most sexually reproducing organisms have two sets of chromosomes, out of which one set is inherited from each parent.

Topic: Biology, Cell Cycle and Cell Division, NEET, NEET 2016 (Phase 1)
Which of the following is not a characteristic feature of bryophytes?

Options:
A Dominant gametophytic generation
B Filamentous rhizoids
C Amphibious habitat
D Formation of accessory spores

The correct answer is:
Formation of accessory spores

Solution:
Bryophytes are simple, small, amphibious (i.e., they require both water and land) plants, and do not have vascular tissue system (atracheata). Accessory spores are not formed. Vegetative reproduction is quite common like fragmentation, tubers, gemmae, buds, and adventitious branches.

Topic: Biology, Plant Kingdom, NEET
Which of the following is not a characteristic feature of the vector pBR322?

Options:
A It has two antibiotic-resistance genes: ampR and tetR.
B It was the first artificial cloning vector constructed in 1997 by Boliver and Rodriguez.
C The ampicillin-resistance gene has restriction sites for Bam HI and Sal I
D The restriction site for Pvu II is present in the replication of plasmid (rop) gene.

The correct answer is:
The ampicillin-resistance gene has restriction sites for Bam HI and Sal I

Solution:
pBR322 was the first artificial cloning vector constructed by Bolivar and Rodriguez in 1977.
In pBR322 p refers to plasmid; BR refers to Bolivar and Rodriguez, the scientists that constructed this plasmid; 322 refers to the number given to distinguish this plasmid from the other plasmids developed in the same laboratory.
Plasmid pBR322 contains two resistance genes namely ampicillin resistance (ampR) gene and tetracycline resistance (tetR). These resistance genes are used as selectable markers, besides this plasmid pBR322 has a variety of unique recognition sites for restriction endonucleases.
Two unique sites i.e., PstI and PvuI are located within the ampR gene whereas BamHI and SalI are located within the tetR gene.

Topic: Biology, Biotechnology and Its Applications, NEET
Which of the following is not a characteristic of alcohol?

Options:
A They are lighter than water
B Their boiling points rise fairly uniformly with rising molecular weight
C Lower members are insoluble in water and organic solvents but the solubility regularly increases with molecular mass
D Lower members have a pleasant small and burning taste, higher members are colourless and tasteless

The correct answer is:
Lower members are insoluble in water and organic solvents but the solubility regularly increases with molecular mass

Solution:
Lower members of alcohols are soluble in water and solubility regularly decreases with increase in molecular mass.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
Which of the following is NOT a characteristic of amino acids?

Options:
A Water solubility
B High melting point
C Behavior like salts
D Presence of both acidic and basic groups

The correct answer is:
High melting point

Solution:
The amino acids are water-soluble, behave like salts, and contain both acidic and basic groups but does not mention anything about their melting points.

Topic: Chemistry, Biomolecules, NEET
Which of the following is not a characteristic of an ideal contraceptives?

Options:
A It should be user friendly and easily available
B It should be effective and reversible.
C It should be with no or least side effects.
D It should interfere with the sexual desire and/or on the sexual act of the user

The correct answer is:
It should interfere with the sexual desire and/or on the sexual act of the user

Solution:
The ideal contraceptives should in no way interfere with sexual drive, desire and or the sexual act of the user. It has to only prevent unwanted pregnancy or conception with least or no side effects to the user.

Topic: Biology, Reproductive Health, NEET
Which of the following is NOT a characteristic of an oxidizing agent?

Options:
A It can increase the oxidation number of an element.
B It is an electron donor.
C It promotes oxidation reactions.
D It can be a strong oxidant.

The correct answer is:
It is an electron donor.

Solution:
An oxidizing agent is not an electron donor; it is an electron acceptor, as mentioned in the passage.

Topic: Chemistry, Redox Reactions, NEET
Which of the following is NOT a characteristic of chelate ligands?

Options:
A They use multiple donor atoms.
B They tend to form stable complexes.
C They have a low denticity.
D They increase the coordination number of the metal ion.

The correct answer is:
They have a low denticity.

Solution:
Chelate ligands have a higher denticity due to their ability to use multiple donor atoms.

Topic: Chemistry, Coordination Compounds, NEET