datavorous/entrance-exam-dataset huggingface dataset:
It is said that the elemental composition of living organisms and that of inanimate objects (like earth’s crust) are similar in the sense that all the major elements are present in both. Then what would be the difference between these two groups? Choose the correct answer from among the following:

Options:
A Living organisms have more gold in them than inanimate objects
B Living organisms have more water in their body than inanimate objects
C Living organisms have more carbon, oxygen and hydrogen per unit mass than inanimate objects.
D Living organisms have more calcium in them than inanimate objects.

The correct answer is:
Living organisms have more carbon, oxygen and hydrogen per unit mass than inanimate objects.

Solution:
Living organisms have more carbon, oxygen and hydrogen per unit mass than inanimate objects.

Topic: Biology, Biomolecules (B), NEET
It is said that the elemental composition of living organisms and that of inanimate objects (like earth's crust) are similar in the sense that all the major elements are present in both. Then what would be the difference between these two groups? Choose the CORRECT answer from among the following:

Options:
A Living organisms have more gold in them than inanimate objects
B Living organisms have more water in their body than inanimate objects
C Living organisms have more calcium in them than inanimate objects.
D Living organisms have more carbon, oxygen and hydrogen per unit mass than inanimate objects.​

The correct answer is:
Living organisms have more carbon, oxygen and hydrogen per unit mass than inanimate objects.​

Solution:
In the biosphere, all living and non-living matter is made up of similar elements. The four major elements found in the living organisms are carbon, oxygen, hydrogen, and nitrogen and are found to be more per unit mass as compared to the inanimate objects. Thus this will help to differentiate them from the non-living entities. The table gives the difference of the elements present in the Earth's crust and the human body.

Topic: Chemistry, Biomolecules, NEET
It takes 2.0 s for a sound wave to travel between two fixed points when the day temperature is 10 Â°C. If the temperature rises to 30 Â°C, the sound wave travels between the same fixed parts in

Options:
A 1.9 s

B 2.0 s
C 2.1 s
D 2.2 s

The correct answer is:
1.9 s

Solution:
Velocity of sound v∝T
Time
t∝1v
∴t∝1T
t1t2=T1T2
2t2=273+30273+10
2t2=303283=1.03
t2=21.03=1.9 s

Topic: Physics, Waves and Sound, NEET
It takes 2.0 s for a sound wave to travel between two fixed points when the day temperature is 10 Â°C . if the temperature rises to 30 Â°C, the sound wave travels between the same fixed parts in

Options:
A 1.9 s

B 2.0 s
C 2.1 s
D 2.2 s

The correct answer is:
1.9 s

Solution:
Velocity of sound vâT
Time
tâ1v
â´tâ1T
t1t2=T2T1
2t2=273+30273+10
2t2=303283=1.03
t2=21.03=1.9 s

Topic: Physics, Waves and Sound, NEET
It takes 4.6 eV to remove one of the least tightly bound electrons from a metal surface. When monochromatic photons strike the metal surface, electrons having kinetic energy from zero to 2.2 eV are ejected. What is the energy of the incident photons?

Options:
A 2.4eV
B 2.2 eV
C 6.8eV
D 4.6eV

The correct answer is:
6.8eV

Solution:
According to question, the work function of the metal surface is W=4.6 eV and K.E of ejected electron = 2.2 eV
Let the energy of the incident photon is E .
i.e. E=W+Ke
Ke= the kinetic energy of ejected electrons
E=4.6 eV+2.2 eV
=6.8 eV

Topic: Physics, Dual Nature of Matter, NEET
It takes a very long time for pineapple plants to produce flowers. Which combination of hormones can be applied to artificially induce flowering in pineapple plants throughout the year to increase yield?

Options:
A Auxin and ethylene
B Gibberellin and abscisic acid
C Gibberellin and ethylene
D Cytokinin and abscisic acid

The correct answer is:
Auxin and ethylene

Solution:
The gibberellins, cytokinins and auxins are found to be growth stimulators, whereas ethylene and abscisic acid are determined as growth inhibitors. The function of cytokinin is the stimulation of cell division, growth of lateral buds and apical dominance. Functions of gibberellins are to stimulate stem elongation. Auxin and ethylene are responsible for the flowering and fruiting in pineapple.

Topic: Biology, Plant - Growth and Development, NEET, NEET 2019 (All India)
It takes a very long time for pineapple plants to produce flowers. Which combination of hormones can be applied to artificially induce flowering in pineapple plants throughout the year to increase yield?

Options:
A Auxin and Ethylene
B Gibberellin and abscisic acid
C Gibberellin and Abscisic acid
D Cytokinin and Abscisic acid

The correct answer is:
Auxin and Ethylene

Solution:
The gibberellins, cytokinins and auxins are found to be growth stimulators, whereas ethylene and abscisic acid are determined as growth inhibitors. The function of cytokinin is the stimulation of cell division, growth of lateral buds and apical dominance. Functions of gibberellins are to stimulate stem elongation. Auxin and ethylene are responsible for the flowering and fruiting in pineapple.

Topic: Biology, Plant - Growth and Development, NEET
It the focal length of objective lens is increased then magnifying power of:

Options:
A microscope will increase but that of telescope decrease
B microscope and telescope both will increase
C microscope and telescope both will decrease
D microscope will decrease but that of telescope will increase

The correct answer is:
microscope will decrease but that of telescope will increase

Solution:
M.P. of a microscope =Lf0Dfe
If f0↑⇒ M.P. of the microscope will decrease
M.P. of telescope =f0fe
If f0↑⇒M/O. of telescope will increase.

Topic: Physics, Ray Optics, NEET, NEET 2014
It was calculated that a shell when fired from a gun with a certain velocity and at an angle of elevation 5 Ï 3 6 rad should strike a given target. In actual practice, it was found that a hill just prevented the trajectory. At what angle of elevation should the gun be fired to hit the target ?

Options:
A 5π36 rad
B 11π36 rad
C 7π36 rad
D 13π36 rad

The correct answer is:
13π36 rad

Solution:
Ranges for complementary angles are the same
R θ = R ( π 2 −θ )
∴ Required angle =π2-5π36=13π36 rad

Topic: Physics, Motion In Two Dimensions, NEET
It was found that when the same environmental challenge was provided to the two sets of organisms who belonged to different ancestors and with different evolution patterns evolved similar phenotypic trait to survive better is called:

Options:
A Natural selection
B Adaptive radiation
C Convergent evolution
D Genetic drift

The correct answer is:
Convergent evolution

Solution:
Natural selection is the trait that possesses heritable variation and must confer an advantage in the competition for resources is selected naturally. Adaptive radiation is an evolutionary process giving rise to new species adapted to new habitats and ways of life. Genetic drift is a change in allele frequency in a population, due to random selection of genes. In the concept of evolution, convergent evolution results, where although the organisms that are not closely related, evolve independently having similar traits and showing adaptations to similar environment or ecological niche.

Topic: Biology, Evolution, NEET
IUCN Red list (2004) documents the extinction of how many species in last 500 years?

Options:
A 784
B 874
C 478
D 487

The correct answer is:
784

Solution:
The IUCN Red List (2004) documents the extinction of 784 species (including 338 vertebrates, 359 invertebrates and 87 plants) in the last 500 years. The last 20 years alone have witnessed the disappearance of 27 species.

Topic: Biology, Biodiversity and its Conservation, NEET
IUDs are small objects made up of plastic or copper that are inserted in the uterine cavity. Which of the following statements are correct about IUDs?
(a) IUDs decrease phagocytosis of sperm within the uterus.
(b) The released copper ions suppress the sperm motility.
(c) IUDs do not make the cervix hostile to the sperm.
(d) IUDs suppress the fertilization capacity of sperm.
(e) The IUDs require surgical intervention for their insertion in the uterine cavity.
Choose the most appropriate answer from the options given below :

Options:
A (a), (d) and (e) only
B (b) and (c) only
C (b) and (d) only
D (d) only

The correct answer is:
(b) and (d) only

Solution:
IUDs suppress the fertilisation capacity of sperm. If also reduces sperm motility. copper releasing IUDs also reduces sperm motility and fertilization capacity. But IUDs increase phagocytosis of sperms. They also make uterus hostile.

Topic: Biology, Reproductive Health, NEET, NEET 2022 (Phase 2)
IUPAC name for the compound is

Options:
A 2-methylcyclohexanone
B 2 −methylcyclohexanone
C Heptanone−2
D Methylcyclohexanone

The correct answer is:
2-methylcyclohexanone

Solution:

Topic: Chemistry, General Organic Chemistry, NEET
IUPAC name for the compound

Options:
A Methylcyclohexanone
B 2-Methylcyclohexanone
C Heptanone-2
D Methylcyclo-hexanone

The correct answer is:
2-Methylcyclohexanone

Solution:
2-Methylcyclohexanone

Topic: Chemistry, General Organic Chemistry, NEET
IUPAC name of following organic compound

Options:
A 2-amino-3-hydroxy-4-oxopentanoic acid
B 4-amino-3-hydroxy-2-oxopentanoic acid
C 2-amino-3-hydroxy-4-ketopentanoic acid
D 4-amino-3-hydroxy-2-ketopentanoic acid

The correct answer is:
2-amino-3-hydroxy-4-oxopentanoic acid

Solution:
This compound is named as
-COOH is the principal functional group attached to parent chain, pentane. -NH2,-OH and groups are prefixed as amino, hydroxy and oxo to the parent hydride respectively.

Topic: Chemistry, Carboxylic Acid Derivatives, NEET
IUPAC name of given organic compound CH32CCH2CH3CH2CHClCH3 is -

Options:
A 5-Chloro-3, 3-dimethylhexane
B 5-Chloro-2-ethyl-2methylpentane
C 2-Chloro-4-ethyl-4-methylpentane
D 2-Chloro-4, 4-dimethylhexane

The correct answer is:
2-Chloro-4, 4-dimethylhexane

Solution:

Topic: Chemistry, General Organic Chemistry, NEET
IUPAC name of is

Options:
A 3-Propylbutan-1-ol
B 2-Ethylpentan-1-ol
C 3-Methyl hydroxyhexane
D 2-Ethyl-2-propyl ethanol

The correct answer is:
2-Ethylpentan-1-ol

Solution:

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
IUPAC name of terephthalic acid?

Options:
A Benzene -2,4-dicarboxylic acid
B Benzene -1,4-dicarboxylic acid
C Benzoic acid
D Benzene -1,4,6-tricarboxylic acid

The correct answer is:
Benzene -1,4-dicarboxylic acid

Solution:
Correct Option is : 2
Benzene -1,4-dicarboxylic acid

Topic: Chemistry, Polymers, NEET
IUPAC name of tertiary butyl alcohol is

Options:
A Butan-1-ol
B Butan-2-ol
C 2-methyl propan-1-ol
D 2-methyl propan-2-ol

The correct answer is:
2-methyl propan-2-ol

Solution:
Tertiary butyl alcohol;

Topic: Chemistry, General Organic Chemistry, NEET
IUPAC name of the following compound is

Options:
A 3-hydroxy-5-chlorobenzonitrile
B 3-chloro-5-hydroxybenzonitrile
C 3-chloro-5-cyanophenol
D 3-cyano-5-chlorophenol

The correct answer is:
3-chloro-5-hydroxybenzonitrile

Solution:
Here CN group is major functional group so numbering is started from its side
3-chloro-5-hydroxybenzonitrile

Topic: Chemistry, General Organic Chemistry, NEET
IUPAC name of the following compound is

Options:
A 6-ethyl-1, 4, 8-octanetrioic acid
B 5-ethy-1, 3, 5-hexanetricarboxylic acid
C 3-ethyl-5-carboxyl octanedioic acid
D 4-carboxy-6-ethyloctanedioic acid

The correct answer is:
5-ethy-1, 3, 5-hexanetricarboxylic acid

Solution:
5-ethy-1, 3, 5-hexanetricarboxylic acid
Choose lowest set of locant for principle functional group.

Topic: Chemistry, Carboxylic Acid Derivatives, NEET
IUPAC name of the following compound is

Options:
A propane-1, 2, 3-tricarbonitrile
B 3-cyanopentane-1, 5-dinitrile
C 1, 2, 3-cyanopropane
D propane-1, 2, 3-trinitrile

The correct answer is:
propane-1, 2, 3-tricarbonitrile

Solution:
IUPAC name of the following compound is propane-1, 2, 3-tricarbonitrile.

Topic: Chemistry, Amines, NEET
IUPAC name of the following compound is

Options:
A 2-carboxybenzamide
B 6-carboxybenzamide
C carboxamidobenzoic acid
D 2-carbamoylbenzoic acid

The correct answer is:
2-carbamoylbenzoic acid

Solution:
The IUPAC name of this compound is 2-carbamoylbenzoic acid.

Topic: Chemistry, Carboxylic Acid Derivatives, NEET
IUPAC name of the following is $\mathrm{CH}_2=$ $\mathrm{CH}-\mathrm{CH}_2-\mathrm{CH}_2-\mathrm{C} \equiv \mathrm{CH}$ :

Options:
A 1, 5-hexenyne
B 1-hexene 5-yne
C 1-hexyne-5-ene
D 1,5-hexynene

The correct answer is:
1-hexene 5-yne

Solution:
The IUPAC name of $\mathrm{CH}_2 \mathrm{CHCH}-$ ${ }_2 \mathrm{CH}_2 \mathrm{CCH}$ is 1-hexene-5-yne
The double bond gets priority over triple bond in IUPAC nomenclature.

Topic: Chemistry, General Organic Chemistry, NEET, NEET 2002
IUPAC nomenclature of

is

Options:
A 4-ethyl-2,4-dimethylpent-2-ene
B 2,4,4-trimethylhex-2-ene
C 3,3,5-trimethylhex-4-ene
D 2,2,4-trimethylhex-3-ene

The correct answer is:
2,4,4-trimethylhex-2-ene

Solution:
It is 2,4,4-trimethylhex-2-ene

Topic: Chemistry, Hydrocarbons, NEET
J. Ingenhousz's experiment revealed that there was

Options:
A presence of bubbles when an aquatic plant was placed in the dark.
B no presence of bubbles when an aquatic plant placed in sunlight.
C no presence of bubbles when an aquatic plant was placed in the dark.
D both B and C

The correct answer is:
no presence of bubbles when an aquatic plant was placed in the dark.

Solution:
Using a similar setup as the one used by Priestley, but by placing it once in the dark and once in the sunlight, Jan Ingenhousz (1730-1799) showed that sunlight is essential to the plant process that somehow purifies the air fouled by burning candles or breathing animals. Ingenhousz in an elegant experiment with an aquatic plant showed that in bright sunlight, small bubbles were formed around the green parts while in the dark they did not. Later he identified these bubbles to be of oxygen. Hence he showed that it is only the green part of the plants that could release oxygen.

Topic: Biology, Photosynthesis in Higher Plants, NEET
Jacob and Monad studied lactose metabolism in E.Coli and proposed the operon concept. The operon concept is applicable for:

Options:
A all prokaryotes
B all prokaryotes and some eukaryotes
C all prokaryotes and all eukaryotes
D all prokaryotes and some protozoans

The correct answer is:
all prokaryotes

Solution:
Regulation of transcription in prokaryotes typically involves an operon, such as the lac operon in E. coli. The lac operon is regulated by proteins that behave differently depending on whether lactose is present or absent.
Related Theory
When E.coli is exposed to both lactose and glucose, the organism first metabolise glucose and then temporarily cease to grow until the genes of lac operon become included to provide the ability to metabolise lactose.

Topic: Biology, Molecular Basis of Inheritance, NEET, NEET 2002
Jahn-Teller effect is not observed in high spin complexes of

Options:
A d7
B d8
C d4
D d9

The correct answer is:
d8

Solution:
Jahn Teller effect (JTE) explains the axial distortion in perfect octahedral geometry. It is present in d4 high spin, d7 low spin and d9 configuration, which have an odd number of electrons in a eg set. A weak Jahn Teller effect is also present in d7 high spin complex, which has an odd number of electrons in the set. Therefore, the Jahn Teller effect is not observed in high spin complexes of d8 orbital.

Topic: Chemistry, Coordination Compounds, NEET, NEET 2016 (Phase 2)
Jawless fish probably evolved around

Options:
A 500 mya
B 350 mya
C 320 mya
D 200 mya

The correct answer is:
350 mya

Solution:
By the time of 500 mya, invertebrates were formed and active. Jawless fish probably evolved around 350 mya. Sea-weeds and few plants existed probably around 320 mya. Land reptiles went back into the water to evolve into fish-like reptiles probably 200 mya (e.g. Ichthyosaurs).

Topic: Biology, Evolution, NEET
Jawless fishes probably evolved

Options:
A before the seaweeds.
B before the first photosynthetic organisms.
C at the time of primitive atmosphere of Earth.
D after the origin of turtles.

The correct answer is:
before the seaweeds.

Solution:
The correct order of appearance is: Primitive atmosphere of Earth, 4.5 BYA, Jawless fishes, 350 MYA, Seaweeds, 320 MYA, and then came reptiles.

Topic: Biology, Evolution, NEET
Jawless fishes were originated around

Options:
A 350 mya
B 500 mya
C 320 mya
D 200 mya

The correct answer is:
350 mya

Solution:
500 mya	Origin of Invertebrates .
350 mya	Origin of Jawless fishes . - It is of common opinion that the first organisms that invaded land were plants.
320 mya	Origin of Sea weeds and few other plants.
200 mya	- Some land reptiles (the dinosaurs) went back into water and evolved into fish like reptiles (e.g. Ichthyosaurs).
65 mya	- Sudden disappearance of dinosaurs from the earth. Probable reasons : Climatic changes / Evolution of most of them into birds / etc. - Small sized reptiles of that era are still existing today.

Topic: Biology, Evolution, NEET
'Jaya' and 'Ratna' developed for green revolution in India are the varieties of

Options:
A rice
B wheat
C bajra
D maize

The correct answer is:
rice

Solution:
'Jaya' and 'Ratna' are better-yielding semi-dwarf varieties of rice developed in India.

Topic: Biology, Biotechnology and Its Applications, NEET, NEET 2011 (Screening)
Jellies and foams are used with which of the following contraceptive method to enhance its efficiency

Options:
A Vaults
B Vasectomy
C Coitus interrupts
D IUDs

The correct answer is:
Vaults

Solution:
Diaphragms, cervical caps, and vaults are barriers made of rubber that are inserted into the female reproductive tract to cover the cervix during coitus. They prevent conception by blocking the entry of sperms through the cervix. They are reusable. Spermicidal creams, jellies, and foams are usually used along with these barriers to increase their contraceptive efficiency.

Topic: Biology, Reproductive Health, NEET
J.J. Thomson's cathode ray tube experiment demonstrated that:

Options:
A cathode rays are streams of negatively charged ions
B all the mass of an atom is cssentially in the nucleus
C the $e / m$ of electrons is much greater than the $e / m$ of protons
D the $\mathrm{e} / \mathrm{m}$ ratio of the cathode-ray particle changes when a different gas is placed in the discharge tube

The correct answer is:
the $e / m$ of electrons is much greater than the $e / m$ of protons

Solution:
$\left(\frac{e}{m}\right)_{\text {clectron }} \gg\left(\frac{e}{m}\right)_{\text {proton }}$
$\left[\because\left(\frac{e}{m}\right)_{\mathrm{protons}}=\frac{1}{1837}\left(\frac{e}{m}\right)_{\text {electron }}\right]$

Topic: Physics, Dual Nature of Matter, NEET, NEET 2003
John works as a ground staff at a military airport. While monitoring the test flight of a jet plane, he accidentally stands too close the engine and the loud noise renders him deaf. This permanent damage to his hearing is possible when the sound level is

Options:
A 50 dB or more
B 100 dB or less
C 150 dB or more
D 10 dB or less

The correct answer is:
150 dB or more

Solution:
Noise is undesired high level of sound. We have got used to associating loud sounds with pleasure and entertainment not realising that noise causes psychological and physiological disorders in humans. The bigger the city, the bigger the function, the greater the noise!! A brief exposure to extremely high sound level, 150 dB or more generated by take off of a jet plane or rocket, may damage ear drums thus permanently impairing hearing ability.

Topic: Biology, Environmental Issues, NEET
Joint Forest Management Concept was introduced in India during:

Options:
A 1960s
B 1970s
C 1980s
D 1990s

The correct answer is:
1980s

Solution:
The Government of India introduced in 1980 the concept of Joint Forest Management (JFM), to work closely with the local communities for protecting and managing the forest; in return for their services to the forest, the communities get the benefit of various forest products (like fruits, medicines, rubber, gum, firewood, etc.) and thus the forest is protected sustainably.

Topic: Biology, Environmental Issues, NEET, NEET 2016 (Phase 1)
Joints which are fuse end-to-end with the help of dense fibrous connective tissue are referred as:

Options:
A Sutures
B Saddle joint
C Cartilaginous joint
D Ball and socket joint

The correct answer is:
Sutures

Solution:
Sutures or fibrous joints do not allow any movement. This type of joint is shown by the flat skull bones which fuse end-to-end with the help of dense fibrous connective tissues in the form of sutures, to form the cranium.

Topic: Biology, Locomotion and Movement, NEET
Joints which are fused end-to-end with the help of dense fibrous connective tissue are referred to as

Options:
A sutures
B synovial joints
C cartilaginous Joint
D ball and socket joint

The correct answer is:
sutures

Solution:
Sutures are fibrous joints present in the cranium. They are immovable joints. The four major sutures are the coronal, sagittal, lambdoid and squamous sutures. They connect the frontal, parietal, temporal and occipital bones. The coronal suture joins the frontal bone to the parietal bones. The sagittal suture joins the two parietal bones together.

Topic: Biology, Locomotion and Movement, NEET
Juicy hair-like structures observed in the lemon fruit develop from:

Options:
A exocarp
B mesocarp
C endocarp
D mesocarp and endocarp

The correct answer is:
endocarp

Solution:
Juicy hair-like structures present in the lemon fruit (in citrus) develop from endocarp.

Topic: Biology, Morphology of Flowering Plants, NEET, NEET 2003
Jurassic period of the mesozoic era is characterised by:

Options:
A flowering plants and first dinosaurs appear
B gymnosperms are dominant plants and first birds appear
C radiation of reptiles and origin of mammal like reptiles
D dinosaurs become extinct and angiosperms appear

The correct answer is:
gymnosperms are dominant plants and first birds appear

Solution:
The Jurassic period is the second geological period of the Mesozoic era. In this period, the gymnosperms were dominant and the plants included ferns, cycads, Ginkgo, rushes and conifers; among animals, important invertebrates included ammonites, corals, brachiopods, bivalves and echinoids. Reptiles dominated the vertebrates and the first flying reptile, the pterosaurs appeared. The first primitive bird Archaeopteryx also made its appearance.

Topic: Biology, Evolution, NEET, NEET 2006
Jurassic period of the Mesozoic era is characterized by

Options:
A Gymnosperms are dominant plants and first birds appear
B Radiation of reptiles and origin of mammals like reptiles
C Dinosaurs become extinct and angiosperms appear
D Flowering plants and first dinosaurs appear

The correct answer is:
Gymnosperms are dominant plants and first birds appear

Solution:
Jurassic period is the second geological period of Mesozoic era. In this period, the gymnosperms were dominant and the plants included ferns, cycads, Ginkgo, rushes and conifers, among animals, important invertebrates included anamniotes, corals, brachiopods, bivalves and echinoids. Reptiles dominated the vertebrates and the first flying reptiles, the pterosaurs appeared. The first primitive bird,Archaeopteryx also made its appearance.

Topic: Biology, Evolution, NEET
Just prior to ovulation, there is:

Options:
A low FSH, high LH and high estrogen
B low FSH, high LH and low estrogen
C high FSH, low LH and high estrogen
D high FSH, high LH and high estrogen

The correct answer is:
high FSH, high LH and high estrogen

Solution:
Just prior to ovulation, the phase of menstruation is follicular phase or proliferative phase. There is high amount of FSH and high amount of estrogen. High estrogen stimulates the pituitary to release LH in large amounts (LH surge). Thus, there is high FSH, high estrogen and high LH

Topic: Biology, Human Reproduction, NEET