datavorous/entrance-exam-dataset huggingface dataset:
Which of the following is incorrect?

Options:
A Primary alcohols are very easily oxidised to aldehydes, which are oxidised to acids with same number of C-atoms.
B Secondary alcohols are very easily oxidised to ketones, which are oxidised to acids with same number of C-atoms.
C Secondary alcohols are easily oxidised to ketones, which are oxidised to acids with lesser number of C-atoms.
D Secondary and tertiary alcohols on oxidation form acids with lesser number of C-atoms.

The correct answer is:
Secondary alcohols are very easily oxidised to ketones, which are oxidised to acids with same number of C-atoms.

Solution:
Primary alcohols are easily oxidised to aldehydes and then to acid, both containing the same number of carbon atoms, while secondary alcohols are easily oxidised to ketones with same number of carbon atoms, but ketone oxidised to carboxylic acid containing lesser number of carbon atoms than original alcohol.
Thus all alcohols on oxidation finally give acids but acids obtained from $2^{\circ}$ and $3^{\circ}$ alcohols contain less C-atom.

Topic: Chemistry, Alcohols Phenols and Ethers, COMEDK, COMEDK 2023
Which of the following is incorrect about spermatogenesis?

Options:
A Meiosis-I leads to the formation of secondary spermatocytes
B Meiosis-II leads to the formation of spermatids
C Production of one sperm and 3 polar bodies
D Primary spermatocytes are diploid in nature

The correct answer is:
Production of one sperm and 3 polar bodies

Solution:
Steps involved in Spermatogenesis

Step 1	Spermatogonia (2n = 46) are present in the inside wall of seminiferous tubules. Spermatogonium divides mitotically to increase in number.

Step 2	Some spermatogonia (termed as primary spermatocytes) periodically undergo meiosis. A primary spermatocyte completes meiosis-I (reduction division) and gives rise to 2 equal-sized cells called secondary spermatocytes (n = 23).

Step 3	Both secondary spermatocytes undergo meiosis âII (equational division) to produce 2 equal spermatids (n) each.

Step 4	Each spermatid is transformed into spermatozoa (sperms) by the process of spermiogenesis.

Step 5	After spermiogenesis, the head of sperms becomes embedded in the sertoli cells. Sperms are finally released from the seminiferous tubules by the process called spermiation.

Topic: Biology, Human Reproduction, NEET
Which of the following is incorrect about the location of sacred groves in India?

Options:
A Aravalli hills- Uttar Pradesh
B Khasi and Jaintia hills- Meghalaya
C Western ghats- Karnataka
D Sarguja,chanda and Bastar-Madhya Pradesh

The correct answer is:
Aravalli hills- Uttar Pradesh

Solution:
India has also a history of religious and cultural traditions that emphasised protection of nature. In many cultures, tracts of forest were set aside, and all the trees and wildlife within were venerated and given total protection. Such sacred groves are found in Khasi and Jaintia Hills in Meghalaya, Aravalli Hills of Rajasthan, Western Ghat regions of Karnataka and Maharashtra and the Sarguja, Chanda and Bastar areas of Madhya Pradesh. In Meghalaya, the sacred groves are the last refuges for a large number of rare and threatened plants.

Topic: Biology, Biodiversity and its Conservation, NEET
Which of the following is incorrect in relation to an adapter molecule?

Options:
A It has an anticodon loop that has bases complementary to the code
B It is also called sRNA.
C It has an amino acid acceptor end to which it binds to amino acid.
D It shows an inverted L-shaped 2-D structure.

The correct answer is:
It shows an inverted L-shaped 2-D structure.

Solution:
tRNA has an anticodon loop which has anticodons complementary to the codons of mRNA. Due to very small size, tRNA is also called soluble RNA. Amino acid binds to 3' end of tRNA. The cloverleaf model shows the basic plan of tRNA secondary structure or 2D structure. Three-dimensional structure shows an inverted Lâshaped configuration.
There are three loops in tRNA:
i) Aminoacyl synthetase binding loop or DHU loop (dihydroxyuridine loop): 1st loop from 5â end.
ii) Ribosomal binding loop with 7 unpaired bases: It is 1st loop from 3â end, also called loop.
iii) Anticodon loop with 7 unpaired bases. Out of the 7 bases in the anticodon loop, 3 bases act as anticodon for a particular triplet codon present on mRNA.

Topic: Biology, Molecular Basis of Inheritance, NEET
Which of the following is incorrect statement.

Options:
A Vascular bundle of dicot stem said to be open
B In dicot stem endodermis is referred as starch sheath
C Intrafascicular cambium is primary lateral meristem.
D All tissues lying inside vascular cambium are called as bark.

The correct answer is:
All tissues lying inside vascular cambium are called as bark.

Solution:
Vascular bundles in dicot stem is called open as it consists of cambium which causes secondary growth. In dicot stem endodermis is deposited with starch sheath. Intrafascicular cambium is present inside vascular bundle between xylem and phloem thus is primary in origin. All tissue which lies outside the vascular cambium is called as bark.

Topic: Biology, Anatomy of Flowering Plants, NEET
Which of the following is incorrectly matched?

Options:
A Primary lymphoid organ : MALT
B Antibody that crosses placenta : IgG
C Vaccination : Active immunity
D Reservoirs of monocytes : Spleen

The correct answer is:
Antibody that crosses placenta : IgG

Solution:
Primary lymphoid organ includes Bone marrow and Thymus. Secondary lymphoid organ include spleen, lymph nodes, MALT, vermiform appendix, etc. The antibodies which are associated with mucosa layer is IgA antibody. Vaccination is an example of Artificial Active Immunity due to production of memory cell. Spleen is called Graveyard as well as reservoirs of RBCs (Blood bank)

Topic: Biology, Human Health and Diseases, NEET
Which of the following is least reactive towards SN $^{1}$ reactions?

Options:
A $\mathrm{CH}_{3}-\mathrm{CH}_{2}-\mathrm{Br}$
B $\mathrm{CH}_{3}-\mathrm{CH}(\mathrm{Br})-\mathrm{CH}_{3}$
C $\left(\mathrm{CH}_{3}\right)_{3} \mathrm{C}-\mathrm{Br}$
D $\mathrm{CH}_{3}-\mathrm{Br}$

The correct answer is:
$\mathrm{CH}_{3}-\mathrm{Br}$

Solution:
(C)
Order of reactivity in alkyl halides towards $\mathrm{SN}^{\prime}$ reaction is :
Tertiary > Secondary > Primary

Topic: Chemistry, Haloalkanes and Haloarenes, MHT CET, MHT CET 2020 (19 Oct Shift 2)
Which of the following is most abundant in nature?

Options:
A Kr
B Ne
C He
D Ar

The correct answer is:
Ar

Solution:
Correct Option is : 4
Ar

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which of the following is most suitable description for trachea?

Options:
A Straight tube, extending upto the mid-thoracic cavity and divides at the level of 5th thoracic vertebra.
B Straight tube, extending upto the mid-thoracic cavity and divides at the level of 3rd thoracic vertebra.
C Straight tube, extending upto the neck and divides at the level of 5th cervical vertebra.
D Curved tube, extending upto the mid-thoracic cavity and divides at the level of 5th thoracic vertebra.

The correct answer is:
Straight tube, extending upto the mid-thoracic cavity and divides at the level of 5th thoracic vertebra.

Solution:
Trachea : It is a straight tube that extends upto the mid-thoracic cavity and divides at the level of 5th thoracic vertebra into 2 branches: a right and left primary bronchi.
Branching in trachea leads to primary bronchi â secondary bronchi â tertiary bronchi and bronchioles â terminal bronchioles â alveoli (numerous very thin, irregular-walled and vascularised bag-like structures).
The tracheae, bronchi (primary, secondary and tertiary) and initial bronchioles are supported by incomplete cartilaginous rings.

Topic: Biology, Breathing and Exchange of Gases, NEET
Which of the following is not a characteristic feature of meristematic cell?

Options:
A It shows the ability to divide actively.
B More than one vacuole is present.
C It shows prominent nucleus and abundant cytoplasm.
D The meristematic cell has a thin cell wall due to presence of only cellulose.

The correct answer is:
More than one vacuole is present.

Solution:
The meristematic cell has a certain set of characteristic features. It is generally isodiametric in shape, has a prominent nucleus and abundant cytoplasm. Generally, these cells do not possess vacuoles. Their cell walls are composed of cellulose and are thin to facilitate cell division. The meristematic tissue contains compactly arranged cells.

Topic: Biology, Anatomy of Flowering Plants, NEET
Which of the following is NOT a common example of nucleic acid secondary structure?

Options:
A Formation of hydrogen bonds between bases
B Double-stranded helix
C Complementary base pairing
D Covalent bonds between nucleotides

The correct answer is:
Covalent bonds between nucleotides

Solution:
Nucleic acids are primarily held together by covalent bonds within nucleotides and sugar-phosphate backbones, not as part of their secondary structure.

Topic: Chemistry, Biomolecules, NEET
Which of the following is not a functional aspect of ecosystem?

Options:
A Stratification and species diversity
B Productivity and decomposition
C Energy flow and nutrient cycling
D Both B and C

The correct answer is:
Both B and C

Solution:
Stratification in the field of ecology refers to the vertical layering of a habitat, the arrangement of vegetation in layers. It classifies the layers (singular: stratum, plural: strata) of vegetation largely according to the different heights to which their plants grow. Species diversity is defined as the number of different species present in an ecosystem and relative abundance of each of those species. Diversity is the greatest when all the species present are equally abundant in the area. Thus, both are the structural aspects of the ecosystem.

Topic: Biology, Ecosystem, NEET
Which of the following is not a fundamental character of a chordate?

Options:
A Rod like solid structure Notochord present dorsally.
B Solid, ventral and double nerve cord
C Paired Pharyngeal gill slits
D Heart is ventral in all

The correct answer is:
Solid, ventral and double nerve cord

Solution:
There are few fundamental features of a chordate:

Rod like solid structure called notochord on the dorsal side of embryo.

Presence of dorsal, hollow and single nerve cord.

Paired pharyngeal gill slits.

Topic: Biology, Animal Kingdom, NEET
Which of the following is not a fundamental force in nature?

Options:
A Weak force
B Gravity
C Friction
D Electromagnetic

The correct answer is:
Friction

Solution:
The four fundamental forces in nature are
(i) weak force (ii) gravitational force, (iii) strong nuclear force and (iv) electromagnetic force.
Hence, friction is a non-fundamental force.

Topic: Physics, Units and Dimensions, TS EAMCET, TS EAMCET 2021 (06 Aug Shift 2)
Which of the following is not a lymphoid tissue?

Options:
A
Spleen

B
Tonsils

C
Appendix

D
Thymus

The correct answer is:
Appendix

Solution:
The organs where origin and/or maturation and proliferation of lymphocytes occur are lymphoid organs.
The secondary lymphoid organs provide the sites for interaction of lymphocytes with the antigen, which then proliferate to become effector cells.
Sometime appendix is not considered as the lymphoid organ,as it has been proposed to be a vestigial structure connected to the cecum, located near the junction of the small intestine and the large intestine.

Topic: Biology, Human Health and Diseases
Which of the following is not a primary function of root?

Options:
A Absorption of water and mineral from soil.
B Anchoring of plant in soil.
C Storage of food material and synthesis of plant growth regulator.
D It conducts water, minerals and photosynthates, and helps in vegetative reproduction.

The correct answer is:
It conducts water, minerals and photosynthates, and helps in vegetative reproduction.

Solution:
Roots of a plant perform primary function like absorption of water minerals from soil, anchorage of plant to soil, storage of food and synthesis of plant growth regulators. It performs secondary function like mechanical support to plant and vegetative propagation and respiration.

Topic: Biology, Morphology of Flowering Plants, NEET
Which of the following is not a secondary metabolite ?

Options:
A Anthocyanin
B Lecithin
C Curcumin
D Morphine

The correct answer is:
Lecithin

Solution:
Option (2) is the answer because, lecithin is a phospholipid. They are found in cell membrane. Option (1), (3) and (4) are not the answers because anthocyanins, morphine and curcumin are the secondary metabolites.

Topic: Biology, Biomolecules (B), NEET, NEET 2023 (Manipur)
Which of the following is not a secondary metabolite?

Options:
A Glycerol
B Morphine
C Cellulose
D Ricin

The correct answer is:
Glycerol

Solution:
Metabolites are substances requires for metabolism. These can be primary or secondary. Primary metabolites are those that are needed for normal growth and functions in our body .These are amino acids, lipids carbohydrates, etc. Secondary metabolites are those that are not directly involved in growth or any other function of the body. These are morphine, ricin, rubber, vinblastin, codeine, etc.

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

Options:
A China rose
B Petunia
C Sunflower
D Periwinkle

The correct answer is:
Sunflower

Solution:
Sunflower belongs to the Asteraceae or Compositae family, is a very large and widespread family of flowering plants. Sunflower is not a single flower, instead, it is made up of multiple simpler flowers.

Topic: Biology, Morphology of Flowering Plants, NEET
Which of the following is not an essential amino acid?

Options:
A Lysine
B Histidine
C Valine
D Tyrosine

The correct answer is:
Tyrosine

Solution:
Tyrosine is one of the 20 standard amino acids present in the body and used by cells to synthesis proteins. This is a non-essential amino acid, meaning that when it is not only ingested from diet, it is also synthesised by the body.

Topic: Chemistry, Biomolecules, AP EAMCET, AP EAMCET 2020 (22 Sep Shift 2)
Which of the following is NOT an example of secondary voltaic cell?

Options:
A Nickel-cadmium cell
B Dry cell
C Lead storage battery
D Mercury cell

The correct answer is:
Dry cell

Solution:
Dry cell is primary cell

Topic: Chemistry, Electrochemistry, MHT CET, MHT CET 2022 (10 Aug Shift 2)
Which of the following is not considered a sacred groove?

Options:
A Khasi and Jaintia Hills in Meghalaya.
B Western Ghats in Karnataka & Maharashtra.
C Paudi and Gadhwal areas of Madhya Pradesh.
D Aravali Hills in Rajastan.

The correct answer is:
Paudi and Gadhwal areas of Madhya Pradesh.

Solution:
Examples of sacred grooves
A. In Khasi and Jaintia Hills in Meghalaya (last refuges for many species of rare and threatened plants)
B. In Aravalli Hills of Rajasthan.
C. In Western Ghat regions of Karnataka and Maharashtra.
D. In Sarguja, Chanda and Bastar areas of Madhya Pradesh.

Topic: Biology, Biodiversity and its Conservation, NEET
Which of the following is not considered as a secondary messenger?

Options:
A Acetlycholine
B cAMP
C $\mathrm{Ca}^{2+}$
D diacylglycerol

The correct answer is:
Acetlycholine

Solution:
Acetylcholine is not considered as a secondary messanger.
It is a common neurotransmitter present in the neuromuscular junctions, voluntary neural synapses, synapses of pre-ganglionic nerve fibres, synapses of post-ganglionic parasympathetic nerve fibres. Cholinergic nerve fibres release acetylcholine. It has excitatory effect on the skeletal muscles and excitatory or inhibitory effect at the other sites.

Topic: Biology, Chemical Coordination and Integration, JIPMER, JIPMER 2019
Which of the following is not correct?

Options:
A Aqueous solution of $\mathrm{NaCl}$ is an electrolyte
B The units of electrochemical equivalent are g-Coulomb
C In the Nernst equation, $n$ represents the number of electrons transferred in the electrode reaction
D Standard reduction potential of hydrogen electrode is zero volt

The correct answer is:
The units of electrochemical equivalent are g-Coulomb

Solution:
The unit of electrochemical equivalent $(\mathrm{Z})$ is g/Coulomb.
$\begin{aligned}
& w & =z . i . t \\
\therefore \quad & z & =\frac{w}{i . t} \mathrm{~g} / \text { Coulomb }
\end{aligned}$

Topic: Chemistry, Electrochemistry, TS EAMCET, TS EAMCET 2005
Which of the following is not correct?

Options:
A Aqueous solution of $\mathrm{NaCl}$ is an electrolyte
B The units of electrochemical equivalent are g-Coulomb
C In the Nernst equation, $n$ represents the number of electrons transferred in the electrode reaction
D Standard reduction potential of hydrogen electrode is zero volt

The correct answer is:
The units of electrochemical equivalent are g-Coulomb

Solution:
The unit of electrochemical equivalent $(\mathrm{Z})$ is g/Coulomb.
$\begin{aligned}
& w & =z . i . t \\
\therefore \quad & z & =\frac{w}{i . t} \mathrm{~g} / \text { Coulomb }
\end{aligned}$

Topic: Chemistry, Electrochemistry, AP EAMCET, AP EAMCET 2005
Which of the following is not correct with respect to sacred grooves in India?

Options:
A Sarguja, Chanda and Bastar-Madhya Pradesh
B Aravalli hills - Uttar Pradesh
C Khasi and Jaintia hills- Meghalaya
D Western Ghats - Karnataka

The correct answer is:
Aravalli hills - Uttar Pradesh

Solution:
India has a history of religious and cultural traditions that emphasize protection of nature. In many cultures, tracts of forest were set aside and all the trees and wildlife within were venerated and given total protection. Such sacred groves are found in Khasi and Jaintia Hills in Meghalaya, Aravalli Hills of Rajasthan, Western Ghat regions of Karnataka and Maharashtra and the Sarguja, Chanda and Bastar areas of Madhya Pradesh. In Meghalaya, the sacred groves are the last refuges for a large number of rare and threatened plants.

Topic: Biology, Biodiversity and its Conservation, NEET
Which of the following is NOT dicarboxylic acid?

Options:
A Succinic acid
B Acrylic acid
C Malonic acid
D Phthalic acid

The correct answer is:
Acrylic acid

Solution:
Allylic secondary alcohol

Topic: Chemistry, Carboxylic Acid Derivatives, MHT CET, MHT CET 2020 (15 Oct Shift 1)
Which of the following is not essential in an ecosystem?

Options:
A Inorganic materials
B Micro-consumers
C Macro-consumers
D Producers

The correct answer is:
Macro-consumers

Solution:
Producers and decomposers are the essential components of the ecosystem while primary, secondary and territory consumers are non-essential. Any ecosystem can sustain without non-essential components but it cannot sustain without essential components

Topic: Biology, Ecosystem, NEET
Which of the following is not haploid?

Options:
A Primary spermatocyte
B Spermatogonia
C Ootid
D Both a and b

The correct answer is:
Both a and b

Solution:
Stages in spermatogenesis: Spermatogonia (2n), primary spermatocytes (2n), secondary spermatocytes (n), spermatids (n) and spermatozoa (sperms) (n)
Stages in oogenesis: Oogonia (2n), primary oocytes (2n), secondary oocytes (n) and ootids (n).

Topic: Biology, Human Reproduction, NEET
Which of the following is NOT involved in the formation of secondary rainbow?

Options:
A Refraction
B Angular dispersion
C Interference
D Total internal reflection

The correct answer is:
Interference

Solution:
Std. $11 \mid$ Ch- 9 | Subtopic-9.9

Topic: Physics, Ray Optics, MHT CET, MHT CET 2023 (10 May Shift 1)
Which of the following is NOT prepared by the action of Grignard's reagent on methanal?

Options:
A Ethanol
B Propan-1-ol
C Propan-2-ol
D Butan-1-ol

The correct answer is:
Propan-2-ol

Solution:
Methanal (formaldehyde) on reaction with Grignard reagent gives primary alcohols. Hence, propan-2-ol (secondary alcohol) cannot be prepared by the action of Grignard reagent on methanal.

Topic: Chemistry, Alcohols Phenols and Ethers, MHT CET, MHT CET 2023 (13 May Shift 2)
Which of the following is not the feature of the cells showing meristematic growth?

Options:
A Primary cell wall only
B Conspicuous nuclei
C Rich in cytoplasm
D Few plasmodesmata connections

The correct answer is:
Few plasmodesmata connections

Solution:
The cells in the meristematic region are rich in protoplasm, possess large conspicuous nuclei. Their cell walls are primary in nature, thin and cellulosic with abundant plasmodesmata connections. Because of their high metabolic activity, they require more energy so the respiration rate is also very high in them.

Topic: Biology, Anatomy of Flowering Plants, NEET
Which of the following is not true for double fertilization?

Options:
A It was discovered by Nawaschin.
B The male gamete and secondary nucleus fuse to form the endosperm nucleus.
C The endosperm nucleus is diploid.
D The endosperm provides nutrition to the embryo.

The correct answer is:
The endosperm nucleus is diploid.

Solution:
The endosperm is a tissue produced inside the seeds of most of the flowering plants following fertilization. It surrounds the embryo and provides nutrition in the form of starch, though it can also contain oils and protein.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
Which of the following is secondary benzylic alcohol?

Options:
A

B

C

D

The correct answer is:

Solution:
Std.12|Ch-11|Subtopic-11.2

Topic: Chemistry, General Organic Chemistry, MHT CET, MHT CET 2023 (09 May Shift 1)
Which of the following is secondary pollutant?

Options:
A $\mathrm{CO}_2$
B $\mathrm{N}_2 \mathrm{O}$
C PAN
D $\mathrm{SO}_2$

The correct answer is:
PAN

Solution:
Pollutants which are formed by reaction amongst the primary pollutants (persist in the environment in the form they are passed into it) are called as secondary pollutants e.g., peroxyacyl nitrates (PAN) are formed through reaction between nitrogen oxides and hydrocarbons in the presence of sunlight.

Topic: Chemistry, Environmental Chemistry, JIPMER, JIPMER 2006
Which of the following is tertiary benzylic alcohol?

Options:
A

B

C

D

The correct answer is:

Solution:
In tertiary benzylic alcohol, $-\mathrm{OH}$ group is bonded to a $\mathrm{sp}^3$ hybridised tertiary carbon atom which is further bonded to an aromatic ring.

Topic: Chemistry, Alcohols Phenols and Ethers, MHT CET, MHT CET 2023 (13 May Shift 1)
Which of the following is the central part of a stomach containing the highest number of gastric glands?

Options:
A Cardiac region of stomach
B Fundic region of stomach
C Body of stomach
D Pyloric region of stomach

The correct answer is:
Body of stomach

Solution:
The body of a stomach has abundance of gastric gland which secrete maximum amount of digestive enzymes in stomach.

Topic: Biology, Digestion and Absorption, NEET
Which of the following is the correct atomic radii order of Group 13 elements?

Options:
A B
B Al
C B
D B

The correct answer is:
B

Solution:
Correct Option is : 3
B

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

Options:
A Pb
B Ge
C pb
D Si

The correct answer is:
Pb

Solution:
Correct Option is : 1
Pb

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Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
Which of the following is the correct Boiling point order of alkali metals?

Options:
A Cs
B Na
C Cs
D Li

The correct answer is:
Cs

Solution:
Correct Option is : 1
Cs

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Topic: Chemistry, s Block Elements, NEET