datavorous/entrance-exam-dataset huggingface dataset:
Which of the following methods can prove to be useful to avoid pregnancy caused as a result of rape or casual unprotected sexual intercourse?

Options:
A Insertion of diaphragm within 72 hours of rape
B Administration of spermicidal jellies within 72 hours of rape
C Administration of oestrogens rich pills within 72 hours of rape
D Administration of combined pills within 72 hours of rape

The correct answer is:
Administration of combined pills within 72 hours of rape

Solution:
In order to avoid pregnancy caused by rape or unprotected sexual intercourse, emergency contraception can be used. Administration of progesterone or progesterone-estrogen or insertion of IUD within 72 hours of coitus has proved to be useful for this purpose.

Topic: Biology, Reproductive Health, NEET
Which of the following methods can shield a body from the gravitational influence of nearby matter?

Options:
A Putting it inside a hollow sphere
B a body cannot shield from gravitational influence
C Creating a vacuum around it
D Increasing its mass

The correct answer is:
a body cannot shield from gravitational influence

Solution:
Correct Option is : (B)
a body cannot shield from gravitational influence

Topic: Chemistry, Gravitation, NEET
Which of the following methods is commonly used for industrial preparation of Carbon Monoxide (CO)?

Options:
A Direct Combustion of Fossil Fuels
B Steam Reforming of Natural Gas
C Reaction of Carbon with Oxygen
D Reaction of Carbonates with Acid

The correct answer is:
Steam Reforming of Natural Gas

Solution:
Correct Option is : (B)
Steam Reforming of Natural Gas

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which of the following methods is commonly used for industrial production of Carbon Dioxide (CO2)?

Options:
A Direct Combustion of Fossil Fuels
B Steam Reforming of Natural Gas
C Reaction of Carbon with Oxygen
D Reaction of Carbonates with Acid

The correct answer is:
Direct Combustion of Fossil Fuels

Solution:
Correct Option is : (A)
Direct Combustion of Fossil Fuels

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which of the following methods is most effective for separating alumina from silica in a bauxite ore associated with silica?

Options:
A Leaching with water
B Froth Flotation
C Bayer's Process
D Zone Refining

The correct answer is:
Bayer's Process

Solution:
Correct Option is : (C)
Bayer's Process

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
Which of the following methods is not commonly used for introducing foreign DNA into the plant cell?

Options:
A Agrobacterium mediated transformation
B Gene gun
C 'Disarmed pathogen' vectors
D Bacteriophages

The correct answer is:
Bacteriophages

Solution:
Bacteriophage can be used in introducing DNA into animal and bacterial cell, not plant cell.
Gene Gun, Agrobacterium mediated Transfer and Disarmed pathogen are used as vector for plant cells.

Topic: Biology, Biotechnology - Principles and Processes, NEET, NEET 2022 (Phase 2)
Which of the following methods is used for obtaining aluminium metal?

Options:
A Electrolysing fused Al2O3 and cryolite
B By heating Al2O3 with carbon
C By heating Al2O3 in Muffle furnace
D By a process called pyrometallurgy

The correct answer is:
Electrolysing fused Al2O3 and cryolite

Solution:
Al is obtained by electrolysing fused Al2O3 and cryolite.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
Which of the following microbe is responsible for commercial production of acid present in lime?

Options:
A Clostridium butylicum, a bacterium
B Aspergillus niger, a fungus
C Lactobacillus, a bacterium
D Trichoderma polysporum,a fungus

The correct answer is:
Aspergillus niger, a fungus

Solution:
The acid which is present in lime is citric acid. It is produced by the fungus Aspergillus niger. It is also known as the fungus of citric acid.

Topic: Biology, Microbes in Human Welfare, NEET
Which of the following microbe is used to produce swiss cheese commercially?

Options:
A Lactobacillus acidophilus
B Saccharomyces cerevisiae
C Propionibacterium sharmanii
D Aspergillus niger

The correct answer is:
Propionibacterium sharmanii

Solution:
Different types of cheese formed are ripened due to action of different microbes. Swiss cheese bears large holes due to more production of CO2 by bacteria Propionibacterium sharmanii.

Topic: Biology, Microbes in Human Welfare, NEET
Which of the following microbe is widely used in the removal of industrial wastes?

Options:
A Tricoderma sp
B Aspergillus niger
C Pseudomonas putida
D All of these

The correct answer is:
All of these

Solution:
Trichoderma viride was widely used in the textile, pulp and paper industries. The cellulase enzyme produced by this fungi is involved in the removal of surface fibrils from linen fabrics and are also involved in the removal of environmental pollutants like metal ions and dyes. Aspergillus niger is capable of removing 91% of the copper and 70% of the zinc from treated swine effluent. The Pseudomonas putida is a bioremidiation organism involved in removal of sulfate toxins from the effluents together with removal of oil contaminants.

Topic: Biology, Environmental Issues, NEET
Which of the following microorganism is best suited as a cloning vector to introduce nematode specific genes in plants?

Options:
A

Phage λ

B Retrovirus
C

E.coli

D

Agrobacterium tumefaciens

The correct answer is:

Agrobacterium tumefaciens

Solution:
Agrobacterium tumefaciens is a rod shape. Gram negative soil bacterium. It inserts a small segment of DNA (known as the T-DNA, for 'transfer DNA'), from a plasmid, into the plant cell, which is incorporated at a semi-random location into the plant genome, which causes the plant cells to become cancer cells and produce specific compounds called Opines, which the bacterium utilise as a carbon source.

The plasmid T-DNA that is transferred to the plant is an ideal vehicle for genetic engineering. This is done by cloning a desired gene sequence into the T-DNA that will be inserted into the host DNA.

Topic: Biology, Biotechnology and Its Applications, NEET
Which of the following microorganism is involved in last step of biogas production?

Options:
A Methanobacterium
B Acetobacter
C Bacillus
D Streptococcus

The correct answer is:
Methanobacterium

Solution:
Certain bacteria, which grow anaerobically on cellulosic material, produce large amount of methane along with CO2 and H2. These bacteria are collectively called methanogens, and one such common bacterium is Methanobacterium. These bacteria are commonly found in the anaerobic sludge during sewage treatment. These bacteria are also present in the rumen (a part of stomach) of cattle.

Topic: Biology, Microbes in Human Welfare, NEET
Which of the following mineral deficiencies will cause death of stem and root tips?

Options:
A Mo
B Ca
C S
D Fe

The correct answer is:
Ca

Solution:
Calcium involved in selective permeability of cell membranes. It activates certain enzymes required for development of stem and root apex and as calcium pectate in the middle lamella of cell wall. The deficiency of calcium causes stunted growth, degeneration of meristems especially root apex, chlorosis, necrosis and curling.

Topic: Biology, Mineral Nutrition, NEET
Which of the following mineral does not contain Al.

Options:
A Cryolite
B Mica
C Feldspar
D Fluorspar

The correct answer is:
Fluorspar

Solution:
Fluorspar (CaF2), Cryolite (Na3AlF6),
Feldspar (KAlSi3O8), mica (K2O.3Al2O3.6SiO2.2H2O)

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
Which of the following mineral ion is not remobilized in plants?

Options:
A Nitrogen
B Phosphorus
C Potassium
D Calcium

The correct answer is:
Calcium

Solution:
Nitrogen, phosphorus and potassium are mobile elements. Calcium is not remobilized in plants

Topic: Biology, Mineral Nutrition, NEET, NEET 2023 (Manipur)
Which of the following mixture of gases was used by Miller in his experiment?

Options:
A Methane, ammonia, hydrogen and carbon monoxide.
B Ammonia, water, carbon dioxide and oxygen.
C Methane, water, oxides of nitrogen and oxygen.
D Methane, ammonia, hydrogen and water vapour.

The correct answer is:
Methane, ammonia, hydrogen and water vapour.

Solution:
According to Oparin and Haldane initial atmosphere had hydrogen, oxygen, carbon and nitrogen out of which Hydrogen was highly reactive and hence reacted with all other elements to form various compounds like Water, Methane and Ammonia. Since the earlier atmosphere was reducing type ozone was unavailable and hence H2O was in gaseous form due to effect of sunlight. Urey and Miller wanted to replicate this theory in an experimental setup to understand whether the findings mentioned by Oparin and Haldane was real or not. Hence they use the same substances in their experiment.

Topic: Biology, Evolution, NEET
Which of the following mixture will lead to the formation of negatively charged colloid [AgI]I-

Options:
A 50 mL of 0.1 M AgNO3+50 mL of 0.1 M KI
B 50 mL of 0.1 M AgNO3+50 mL of 0.2 M KI
C 50 mL of 0.2 M AgNO3+50 mL of 0.1 M KI
D 50 mL of 0.2 M AgNO3+50 mL of 0.2 M KI

The correct answer is:
50 mL of 0.1 M AgNO3+50 mL of 0.2 M KI

Solution:
[AgI]I- colloid will be formed only when the iodide ion is present in excess.

Topic: Chemistry, Surface Chemistry, NEET
Which of the following molecule has B–A–B angle of 107:

Options:
A CH4
B SO2
C NH3
D ClF3

The correct answer is:
NH3

Solution:
Correct Option is : 3
NH3

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which of the following molecule represent the given structure?

Options:
A Monosaccharide that is present in animal starch
B Monosaccharide that is present in inulin
C Monosaccharide that is present in the genetic material of tobacco mosaic virus
D Monosaccharide that is present in the genetic material of lambda bacteriophage

The correct answer is:
Monosaccharide that is present in the genetic material of tobacco mosaic virus

Solution:
The given structure is of ribose sugar which is a 5C sugar. This sugar is part of the nucleic acid -RNA found in the genetic material of the tobacco mosaic virus. It has a pentagonal cyclic structure formed by binding of the carbon 1 and 4 attached by an oxygen atom. Deoxyribose sugar found in DNA (which is the genetic material of bacteriophage) differs from ribose sugar in the absence of 'O' atom on the 2nd C atom. Monosaccharide present in animal starch (glycogen) is glucose which has a hexagonal ring (pyranose ring). Fructose is the monosaccharide present in inulin.

Topic: Chemistry, Biomolecules, NEET
Which of the following molecules acts as a Lewis acid?

Options:
A $\left(\mathrm{CH}_3\right)_3 \mathrm{~B}$
B $\left(\mathrm{CH}_3\right)_2 \mathrm{O}$
C $\left(\mathrm{CH}_3\right)_3 \mathrm{P}$
D $\left(\mathrm{CH}_3\right)_3 \mathrm{~N}$

The correct answer is:
$\left(\mathrm{CH}_3\right)_3 \mathrm{~B}$

Solution:
Key Idea According to Lewis concept, "Acids are electron acceptor and bases are electron donor". Since, electron deficient compounds also have an ability to accept electrons, these are regarded as acids.

Topic: Chemistry, Ionic Equilibrium, NEET, NEET 2009 (Screening)
Which of the following molecules can be categorized as linear?

Options:
A H2O
B HOCl
C BeCl2
D Cl2O

The correct answer is:
BeCl2

Solution:
Correct Option is : (C)
BeCl2

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which of the following molecules, H2O or H2S, has a higher bond angle, and why?

Options:
A H2O, because oxygen is more electronegative than sulphur.
B H2S, because sulphur has a larger atomic size.
C H2O, because of increased bond-pair bond-pair repulsion between oxygen atoms.
D H2S, because of stronger hydrogen bonding between sulphur and hydrogen.

The correct answer is:
H2O, because oxygen is more electronegative than sulphur.

Solution:
Correct Option is : (A)
H2O, because oxygen is more electronegative than sulphur.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which of the following molecules has highest dipole moment?

Options:
A BF3
B NH3
C NF3
D CCl4

The correct answer is:
NH3

Solution:
Dipole moment of BF3 and CCl4 is zero because these are symmetrical molecules. Dipole moment of NH3 is greater than NF3 .

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which of the following molecules has "NON ZERO" dipole moment value?

Options:
A $\mathrm{CCl}_4$
B HI
C $\mathrm{CO}_2$
D $\mathrm{BF}_3$

The correct answer is:
HI

Solution:
Dipole moment of a molecule depends both on shape and bond dipole.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET, NEET 2024 (Re-NEET)
Which of the following molecules has the maximum dipole moment?

Options:
A CO2
B CH4
C NH3
D NF3

The correct answer is:
NH3

Solution:
For regular geometry and linear shaped molecules dipole moment is always zero. It depends upon the direction of the polar bond. The direction of dipole moment is similar to the flow of electrons in the polar bond.

CO2CH4NH3μ=0μ=0μ=1.47D NF3μ=0.23D

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET, NEET 2014
Which of the following molecules has trigonal planar geometry?

Options:
A $\mathrm{BF}_3$
B $\mathrm{NH}_3$
C $\mathrm{PCl}_3$
D $\mathrm{IF}_3$

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

Solution:

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET, NEET 2005
Which of the following molecules involves the formation of dπ-pπ bonding?

Options:
A Trimethyl amine
B Carbon monoxide
C Trisilyl amine
D C3O2

The correct answer is:
Trisilyl amine

Solution:
In Trisilyl amine there is dπ-pπ bonding between N-atom and silicon atoms on silyl groups. In rest other compounds given here dπ-pπ bonding is not possible as any atom in them does not have d-orbitals.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which of the following molecules is an example of an electron-rich hydride with three lone pairs?

Options:
A Methane (CH4)
B Ammonia (NH3)
C Water (H2O)
D Hydrogen fluoride (HF)

The correct answer is:
Hydrogen fluoride (HF)

Solution:
Hydrogen fluoride (HF) is an example of an electron-rich hydride with three lone pairs.

Topic: Chemistry, Hydrogen, NEET
Which of the following molecules is least resonance stabilized?

Options:
A
B
C
D

The correct answer is:

Solution:
In A,B,D entire ring involved in delocalisation and follow huckel rule of (4n+2)pi electrons. so, they are aromatic and are more stable.
While in C one carbon is sp3 so non planar. so, non aromatic and it is less stable.

Topic: Chemistry, General Organic Chemistry, NEET
Which of the following molecules is non-polar in nature?

Options:
A POCl3
B CH2O
C SbCl5
D NO2

The correct answer is:
SbCl5

Solution:
All the given option have asymmetric structure except SbCl5, it has a symmetric structure (trigonal bipyramidal) with only 5 bond pairs and zero lone pair. So, it will have zero net dipole moment, i.e., it will be non-polar.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET, NEET 2021
Which of the following molecules represents the order of hybridisation sp2,sp2 , sp, sp from left to right atoms?

Options:
A CH2=CH-CH=CH2
B CH2=CH-C≡CH
C HC≡C-C≡CH
D CH3-CH=CH-CH3

The correct answer is:
CH2=CH-C≡CH

Solution:
CH2sp2=CHsp2-Csp≡CHsp
(Number of orbital require in hybridization = Number of σ -bonds around each carbon atom.)

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which of the following molecules represents the order of hybridization sp2, sp2, sp, sp from left to right atoms?

Options:
A CH2=CH-CH=CH2
B CH2=CH-C≡CH
C HC≡C-C≡CH
D CH3-CH=CH-CH3

The correct answer is:
CH2=CH-C≡CH

Solution:
Hybridization can be calculated by: Total number of sigma bond + Total number of lone pair.

CH2sp2=CHsp2−Csp≡CHsp

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET, NEET 2018
Which of the following molecule/species is having minimum number of lone pair on its central atom?

Options:
A BrF3
B BrF4-
C XeF5+
D I3-

The correct answer is:
XeF5+

Solution:
Here XeF5+ has least number of lone pair on central atom (1 only)

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which of the following most appropriately describes haemophilia?

Options:
A Recessive gene disorder
B X - linked recessive gene disorder
C Chromosomal disorder
D Dominant gene disorder

The correct answer is:
X - linked recessive gene disorder

Solution:
Genes related to haemophilia are always present on the X-chromosome, and it is a recessive gene disorder as it expresses itself in females when it comes to a homozygous condition. It causes a defect in the clotting factor formation; thus, a simple cut can bleed continuously leading to even death. Hence, it is also known as 'bleeders' disease or 'royal disease' as Queen Victoria was a carrier for this disease.

Topic: Biology, Principles of Inheritance and Variation, NEET, NEET 2016 (Phase 1)
Which of the following most appropriately describes haemophilia?

Options:
A Recessive gene disorder
B X - linked recessive gene disorder
C Chromosomal disorder
D Dominant gene disorder

The correct answer is:
X - linked recessive gene disorder

Solution:
Genes related to haemophilia are always present on the X chromosome, and it is a recessive gene disorder as it expresses itself in females when it comes to a homozygous condition. It causes a defect in the clotting factor formation; thus, a simple cut can bleed continuously leading to even death. Hence, it is also known as 'bleeders' disease or 'royal disease' as Queen Victoria was a carrier for this disease.

Topic: Biology, Principles of Inheritance and Variation, NEET
Which of the following motion examples satisfies the conditions x > 0, v < 0, a > 0 at a particular instant?

Options:
A A+Be-γt
B ABe-γt
C A/Be-γt
D A+Bt+γt2

The correct answer is:
A+Be-γt

Solution:
Correct Option is : (A)
A+Be-γt

Topic: Chemistry, Motion In One Dimension, NEET
Which of the following mRNA will get translated completely?

Options:
A AUGUUUCCUCAUUAGGGUGUU
B GUGUUUCCUCAUGGUUGAGUU
C AUGUUUCCUCAUGGUGUUUAA
D AUGUUUCCUUGAAUGGUUUUA

The correct answer is:
AUGUUUCCUCAUGGUGUUUAA

Solution:
mRNA is the transcribed polynucleotide which is later translated by ribosomes using tRNA to join amino acids and make proteins. mRNA contains the genetic code which is a set of instructions that help cells to obtain the information in making proteins from the DNA. The work of Khorana and Nirenberg helped decipher the genetic code which is followed by all organisms in protein synthesis. The codes are always in a triplet (codon) form that sequence of three N-bases and they are universal. AUG triplet is the initiator codon whose presence is must at the start of the sequence to initiate the translation process. Without AUG, translation for that sequence will not occur. Also, AUG codes for the amino acid methionine.
UAA, UAG and UGA are called as terminator codon and they do not represent/code for any amino acid. They signal the end of the polypeptide chain during protein synthesis in translation. Stop codon is must to avoid formation of defective protein.

Topic: Biology, Molecular Basis of Inheritance, NEET
Which of the following muscles are known to be involuntary, branched and striated?

Options:
A Skeletal muscle
B Smooth muscle
C Cardiac muscle
D Both (a) and (c)

The correct answer is:
Cardiac muscle

Solution:
Cardiac muscles are muscles of the heart. These are a type of striated muscles. Many cardiac muscle cells form a branching pattern in a cardiac muscle. These are involuntary muscles and are not under the direct control of the nervous system. These participate in working of the heart.

Topic: Biology, Locomotion and Movement, NEET
Which of the following n-alkanes, when subjected to the aromatization or reforming reaction, is most likely

Options:
A Hexane
B Pentane
C Butane (C4H10)
D Heptane (C7H16)

The correct answer is:
Heptane (C7H16)

Solution:
Toluene (C7H8) is a methyl derivative of benzene, and heptane (C7H16) is a suitable n-alkane for its preparation.

Topic: Chemistry, Hydrocarbons, NEET
Which of the following named reaction is not used for introducing a - COOH group?

Options:
A Cannizzaro reaction
B Benzylic acid rearrangement
C Iodoform reaction
D none of these

The correct answer is:
none of these

Solution:
Iodoform reaction:-
benzilic-acid-rearrangement-mechanism :-
cannizaro recation:-

Topic: Chemistry, Carboxylic Acid Derivatives, NEET
Which of the following names of environmental activists are matched correctly with their work?

I. Amritadevi Bishnoi: Conservation of trees in Jodhpur

II. Ramesh Chandra Dagar: Organic farmer in Sonipat

III. Ahmed Khan: Remedy for Plastic Waste in Bangalore

Options:
A I and II
B I and III
C II and III
D I, II and III

The correct answer is:
I, II and III

Solution:
In 1731, the king of Jodhpur in Rajasthan asked one of his ministers to arrange wood for constructing a new palace. Amrita Devi showed exemplary courage by hugging a tree and daring king's men to cut her first before cutting the tree. Ramesh Chandra Dagar, a farmer in Sonipat, Haryana, is doing just this. He includes bee-keeping, dairy management, water harvesting, composting and agriculture in a chain of processes, which support each other and allow an extremely economical and sustainable venture. Ahmed Khan proved that blends of Polyblend and bitumen, when used to lay roads, enhanced the bitumen's water repellant properties, and helped to increase road life by a factor of three. The raw material for creating Polyblend is any plastic film waste

Topic: Biology, Environmental Issues, NEET
Which of the following National Parks is home to the famous musk deer or hangul?

Options:
A Keibul Lamjao National Park, Manipur
B Bandhavgarh National Park, Madhya Pradesh
C Eaglenest Wildlife Sanctuary, Arunachal Pradesh
D Dachigam National Park, Jammu & Kashmir

The correct answer is:
Dachigam National Park, Jammu & Kashmir

Solution:
Dachigam National Park is located 22 kilometres from Srinagar, Jammu and Kashmir. It covers an area of 500 km2. The name of the park literally stands for "ten villages" which could be in memory of the ten villages that were relocated for its formation. The National park is famous for the conservation of Musk deer or Hangul.

Topic: Biology, Biodiversity and its Conservation, NEET, NEET 2016 (Phase 2)
Which of the following nitrate gives off different nitrogen oxide then rest of the other nitrates here?

Options:
A Lithium nitrate
B Lead nitrate
C Barium nitrate
D Ammonium nitrate

The correct answer is:
Ammonium nitrate

Solution:
NH4NO3 on heating gives N2O
NH4NO3→ΔN2O+2H2O
Other given nitrates gives NO2 and O2 on heating for e.g., Lithium nitrate.
2Pb(NO3)2→Δ2PbO+4NO2+O2

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which of the following nitrates crystallizes as an anhydrous salt?

Options:
A Beryllium nitrate (Be(NO3)2)
B Magnesium nitrate (Mg(NO3)2)
C Calcium nitrate (Ca(NO3)2)
D Barium nitrate (Ba(NO3)2)

The correct answer is:
Barium nitrate (Ba(NO3)2)

Solution:
Barium nitrate crystallizes as the anhydrous salt, which means it does not have associated water molecules in its crystal structure.

Topic: Chemistry, s Block Elements, NEET
Which of the following nitroalkane will not show tautomerism?

Options:
A CH3CH2CH2CH2NO2
B
C
D

The correct answer is:

Solution:
has no Î±-hydrogen. Hence, it will not show tautomerism.

Topic: Chemistry, General Organic Chemistry, NEET
Which of the following nitrogenous waste is excreted in form of pellets or paste?

Options:
A Reptiles and birds
B Snails and insects
C Insects and birds
D All of the above

The correct answer is:
All of the above

Solution:
Excretion of uric acid as a nitrogenous waste is a way to preserve water in body and minimize loss of water in urine. Therefore, animals which survive in water-stress conditions excrete their nitrogenous waste as uric acid to prevent water loss.

Topic: Biology, Excretory Products and their Elimination, NEET
Which of the following nobel gas is most polarised

Options:
A Kr
B He
C Ar
D Xe

The correct answer is:
Xe

Solution:
Xe is highly polar since the ionisation potential of xenon is quite close to the ionisation potential of oxygen.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET