datavorous/entrance-exam-dataset huggingface dataset:
Which of the following plants shows a very close relationship with a species of moth, where none of the two can complete their life cycle without the other?

Options:
A Banana
B Yucca
C Hydrilla
D Viola

The correct answer is:
Yucca

Solution:
Yucca shows a very close relationship with a species of moth, where none of the two can complete its life cycle without the other. The moth's eggs are deposited in the locule of the ovary and the flower, in turn, is pollinated by the moth. As the seeds start developing, the larvae of the moth hatch out of the eggs.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET, NEET 2018
Which of the following plot is correct about Maxwell's speed distribution law?

Options:
A
B
C
D

The correct answer is:

Solution:
The speed corresponding to maxima is umps .
Umps>uavg>urms

Topic: Physics, Kinetic Theory of Gases, NEET
Which of the following plot is correct about the kinetic energy of photoelectrons?

Options:
A
B
C
D

The correct answer is:

Solution:
Here plot in option A is correct as Kinetic energy of photoelectrons is independent of the intensity of radiation.

Topic: Chemistry, Structure of Atom, NEET
Which of the following plot represents the variation of $\ln \mathrm{k}$ versus $\frac{1}{T}$ in accordance with Arrhenius equation?

Options:
A

B

C

D

The correct answer is:

Solution:
Using Arrhenius equation,
$\mathrm{k}=\mathrm{Ae}^{-\mathrm{E}_{\mathrm{a}} / R T}$
$\mathrm{k}=\mathrm{Ae}^{-\mathrm{E}_{\mathrm{a}} / R T}$
$\ln k=\ln A-\frac{E_a}{R T}$
$y=c+m x, \quad$ slope $(m)=-\frac{E_a}{R}$
Intercept $=\ln \mathrm{A}$

Topic: Chemistry, Chemical Kinetics, NEET, NEET 2024 (Re-NEET)
Which of the following plots represent correct variation of equivalent conductance (Λ) with dilution for a strong electrolyte?

Options:
A
B
C
D

The correct answer is:

Solution:
This is because equivalent conductance of a strong electrolyte first increases with dilution and then becomes almost constant.

Topic: Chemistry, Electrochemistry, NEET
Which of the following point on the oxygen dissociation curve represent p50 of HbO2 in the graph given below?

Options:
A A
B B
C C
D D

The correct answer is:
A

Solution:
p50 represents the partial pressure of a gas required to achieve 50% saturation of a particular protein's binding sites. The oxygen dissociation curve plots the % saturation against the partial pressure of oxygen, and its contribution to the total oxygen content. This is an S-shaped curve due to the alterations in hemoglobin's affinity for oxygen in response to other physiologic factors. Please note the dotted line at the bottom of the graph. This represents the dissolved O2. Dissolved O2 is a linear relationship to its partial pressure and results in a straight line.

Topic: Biology, Breathing and Exchange of Gases, NEET
Which of the following points were not explained by Schleiden and Schwann when they formulated their original cell theory?

Options:
A All plants are composed of different kinds of cells which form the tissues of the plant
B Animal cells had a thin outer layer which is today known as the 'plasma membrane'
C Cells divide and new cells are formed from pre-existing cells
D The presence of cell wall is a unique character of the plant cells

The correct answer is:
Cells divide and new cells are formed from pre-existing cells

Solution:
Many plants were observed by Matthias Schleiden, a German botanist. He observed that all plants are made up of different types of cells that combine to form different types of tissues. Theodore Schwann, a British zoologist, observed that various types of animal cells have a thin outer layer. It is called the plasma membrane today. He also concluded that the cell wall is a unique feature of plants. Later Rudolf Virchow added the concept of 'Omnis cellula-e cellula'. It means that cells divide and new cells are formed from pre-existing cells.

Topic: Biology, Cell - The Unit of Life, NEET
Which of the following polymer is not synthesized from acidic monomer?

Options:
A Nylon-6,6
B Dacron
C Bakelite
D Teflon

The correct answer is:
Teflon

Solution:
Here teflon is not synthesized acidic monomer while rest others have acidic monomers.
Bakelite is polymer of phenol and formaldehyde.

Topic: Chemistry, Polymers, NEET
Which of the following polymers between bakelite, urea-formaldehyde resin, polythene, polyvinyls and polystyrene soften on heating and harden on cooling? What are the polymers with this property collectively called?

Options:
A Polythene and polystyrene soften on heating and harden on cooling. Such polymers are called thermoplastic polymers.
B Polythene, polyvinyls and polystyrene soften on heating and harden on cooling. Such polymers are called thermoplastic polymers.
C Polythene, polyvinyls and polystyrene soften on heating and harden on cooling. Such polymers are called thermofibric polymers.
D Bakelite, polyvinyls and polystyrene soften on heating and harden on cooling. Such polymers are called thermoplastic polymers.

The correct answer is:
Polythene, polyvinyls and polystyrene soften on heating and harden on cooling. Such polymers are called thermoplastic polymers.

Solution:
Correct Option is : (B)
Polythene, polyvinyls and polystyrene soften on heating and harden on cooling. Such polymers are called thermoplastic polymers.

Topic: Chemistry, Polymers, NEET
Which of the following polysaccharide is wrongly matched with its monomer?

Options:
A

Glycogenh	Glucose

B

Chitin	N-Acetyl glucosamine (NAG)

C

Inulin	Mannose

D

Mucopolysaccharide	Amino sugars and other chemically modified sugars

The correct answer is:

Inulin	Mannose

Solution:
Polysaccharides
- Long chain polymers of monosaccharides. - Present in acid insoluble fraction.
- Examples :
1. Cellulose : It is a homopolymer with glucose as unit. Cellulose is found in cell wall of plants, algae, etc.
2. Starch : It is also a homopolymer of glucose. It serve as store house of energy in plant tissues.
3. Glycogen : It is a homopolymer of glucose. It serve as store house of energy in animals.
4. Inulin : It is a homopolymer of fructose.
5. Chitin : It is a complex homopolysaccharide made up of N-acetyl glucosamine (NAG). It is found in the exoskeleton of arthropods and cell wall of fungi.
6. Mucopolysaccharides : These are complex polysaccharides and heteropolymer of amino sugars and other chemically modified sugars.

Topic: Chemistry, Biomolecules, NEET
Which of the following possesses mammary glands?

Options:
A Struthio
B Pteropus
C Hemidactylus
D Rana

The correct answer is:
Pteropus

Solution:
Presence of mammary gland is a characteristic feature of the members of Class Mammalia. Pteropus, also known as a flying fox, is a mammal.

Topic: Biology, Animal Kingdom, NEET
Which of the following practices has caused maximum damage to the biodiversity of Indian forests?

Options:
A Selective harvesting

B Block cutting

C Taungya cultivation

D Jhum cultivation

The correct answer is:
Jhum cultivation

Solution:
Taungya system involves rowing agricultural crops between rows of planted trees. It is type of agro-forestry system. Jhum cultivation involved felling and burning of forests, followed by the cultivation of crops for a few years and abandoning cultivation to allow forest regrowth.

Topic: Biology, Environmental Issues, NEET
Which of the following practices involves green chemistry?
(i) Substitute CFCs by environmental friendly HFCs and other compounds
(ii) Replace halogenated solvent by liquid CO2 for drycleaning
(iii) Use of H2O2 for bleaching instead of Cl2
(iv) Making disposable eating utensils and storage jars of plastics

Options:
A (i) and (ii)
B (ii) and (iv)
C (iii) and (iv)
D (i), (ii) and (iii)

The correct answer is:
(i), (ii) and (iii)

Solution:
Using plastic is not a part of the green chemistry since plastic is non-biodegradable. Rest other are part of green chemistry.

Topic: Chemistry, Environmental Chemistry, NEET
Which of the following pressure values, in Pascals (Pa), is required to blow a hemispherical bubble at the lower end of a capillary tube of diameter 2.00 mm, which is dipped 8.00 cm below the surface of water in a beaker? The surface tension of water is 7.30 × ${{10}^{-2}}$ $N~{{m}^{-1}}~$, and 1 atmospheric pressure = 1.01 × ${{10}^{5}}~Pa$. Given: density of water = 1000 $kg~{{m}^{3}}$ and g = 9.80 $m~{{s}^{-2}}$. Additionally, calculate the excess pressure.

Options:
A 5.42 × ${{10}^{5}}~Pa$
B 1.99 × ${{10}^{5}}~Pa$
C 1.02 × ${{10}^{5}}~Pa$
D 6.2 × ${{10}^{5}}~Pa$

The correct answer is:
1.02 × ${{10}^{5}}~Pa$

Solution:
Correct Option is : (C)
1.02 × ${{10}^{5}}~Pa$

Topic: Chemistry, Mechanical Properties of Fluids, NEET
Which of the following primate is the closest relative of humans?

Options:
A Rhesus monkey
B Orangutan
C Gorilla
D Lemur

The correct answer is:
Gorilla

Solution:
Chimpanzees and gorillas are our closest relatives among the living primates. Apes and humans and monkeys are all classified as primates and are considered by evolutionary biologists to be very similar. Apes and humans are commonly claimed to be genetically between 95 and 99% the same. The chimps are matched at 98.8% same in the bases of man and gorilla with 97.9%. So, the gorilla is the closest primate to man after chimpanzee than Rhesus monkey, orangutans and lemur.

Topic: Biology, Evolution, NEET
Which of the following procedure is statutorily banned in India, although it helps to detect the chromosomal abnormality?

Options:
A Cigarette smoking
B Use of drugs
C Amniocentesis
D Use of steroids

The correct answer is:
Amniocentesis

Solution:
Amniocentesis is a medical procedure used primarily in prenatal diagnosis of chromosomal abnormalities and fetal infections as well as for sex determination (banned in India).

Topic: Biology, Reproductive Health, NEET
Which of the following procedures has been banned in India due to the increasing menace of female foeticide?

Options:
A X-ray
B MRI
C Amniocentesis
D use of contraceptives

The correct answer is:
Amniocentesis

Solution:
Amniocentesis is a medical procedure used primarily in prenatal diagnosis of chromosomal abnormalities and foetal infections as well as for sex determination (banned in India).

Topic: Biology, Reproductive Health, NEET
Which of the following process is used based on the ability of metal being converted into its volatile compound?

Options:
A Hydraulic washing
B Forth flotation
C Vapour phase refining
D Electrolytic refining

The correct answer is:
Vapour phase refining

Solution:
Vapour phase refining: In this method, the metal is converted into its volatile compound and collected elsewhere. It is then decomposed to give pure metal. There are two requirements:

(i) The metal should form a volatile compound with an available reagent.

(ii) The volatile compound should be easily decomposable so that recovery is easy.

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
Which of the following process is used to insert recombinant DNA directly into the nucleus of the animal cell?

Options:
A Gene gun
B Disarmed pathogen
C Cloning vector
D Microinjection

The correct answer is:
Microinjection

Solution:
Microinjection is a technique of developing genetically modified organisms where the recombinant DNA is directly injected into the cell nucleus of the cell. A glass pipette is used to deliver the foreign DNA into the cell and making it transgenic.

Topic: Biology, Biotechnology - Principles and Processes, NEET
Which of the following process will bring about genetic variation?

Options:
A Autogamy
B Out-crossing
C Cross pollination
D Both b and c

The correct answer is:
Both b and c

Solution:
Autogamy is the transfer of pollen grains from the anther to the stigma of the same flower. Out-crossing is a breeding technique in animals or plants which are not closely related and brings about the genetic variations in organisms. In cross-pollination, xenogamy, transfer of pollen grain from one flower to the stigma of another flower on different plants, this is true for bringing genetic variation.

Topic: Biology, Principles of Inheritance and Variation, NEET
Which of the following processes and techniques are included under biotechnology?

A. Silencing of the gene to develop pest-resistant plants.
B. Synthesizing gene and using it.
C. Developing a DNA vaccine.
D. Correcting a defective gene.

Options:
A C and D only
B B, C and D
C A and B
D A, B, C and D

The correct answer is:
A, B, C and D

Solution:
All the given options, i.e., silencing of genes to develop pest-resistant plants, synthesizing gene, and using it, developing DNA vaccine, correcting a defective gene are included under biotechnology.

Topic: Biology, Biotechnology - Principles and Processes, NEET
Which of the following processes can be used to remove the hard calcium carbonate layer from an egg without damaging its semipermeable membrane?

Options:
A Placing the egg in a mineral acid solution for around 2 hours.
B Boiling the egg for an extended period of time.
C Scrubbing the egg vigorously with a brush.
D Freezing the egg and then thawing it.

The correct answer is:
Placing the egg in a mineral acid solution for around 2 hours.

Solution:
Correct Option is : (A)
Placing the egg in a mineral acid solution for around 2 hours.

Topic: Chemistry, Solutions, NEET
Which of the following processes does not involve oxidation of iron?

Options:
A Rusting of iron sheets
B Decolourization of blue CuSO4 solution by iron
C Formation of FeCO5 from Fe
D Liberation of H2 from steam by iron at high temperature

The correct answer is:
Formation of FeCO5 from Fe

Solution:
(i) Rusting of iron FeâFe3+(oxidation)
(ii) Cu2++FeâFe2++Cu oxidation
Fe+H2SO4âFeSO4+H2âg (oxidation)
(iii) In the formation of Iron carbonyl from Fe, the oxidation number does not change at all.
Fe 0 + 5 COâ Fe 0 (CO) 5
(iv) Fe+ H 2 O→ Fe 2 O 3 + H 2

Topic: Chemistry, Redox Reactions, NEET, NEET 2015 (Phase 1)
Which of the following processes does not involve oxidation of iron?

Options:
A Decolourization of blue CuSO4 solution by iron
B Formation of Fe(CO)5 from Fe
C Liberation of H2 from steam by iron at high temperature
D Rusting of iron sheets

The correct answer is:
Formation of Fe(CO)5 from Fe

Solution:
Fe0+5CO→[Fe0(CO)5]
As no change in the oxidation state of iron occurs so it is not an oxidation reaction.
In rest other iron gets oxidised, for example
Fe0+CuSO4→Fe2+SO4+Cu

Topic: Chemistry, d and f Block Elements, NEET
Which of the following processes involves smelting?

Options:
A ZnCO3→HeatZnO+CO2
B Fe2O3+3C→Heat2Fe+3CO
C 2PbS+3O2→Heat2PbO+2SO2
D Al2O3.2H2O→HeatAl2O3+2H2O

The correct answer is:
Fe2O3+3C→Heat2Fe+3CO

Solution:
Smelting involves reduction with carbon so here it is case of smelting.
Fe2O3+3C→Heat2Fe+3CO
Reactions given in options A and D involve calcination while that of in option C involves roasting.

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
Which of the following processes involves the removal of hydrogen atoms from an alcohol molecule?

Options:
A Dehydration
B Dehydrogenation
C Oxidation
D Reduction

The correct answer is:
Dehydrogenation

Solution:
Dehydrogenation involves the removal of hydrogen atoms from an alcohol molecule.

Topic: Chemistry, Alcohols Phenols and Ethers, NEET
Which of the following processes is employed to check the progression of a restriction enzyme digestion?

Options:
A RFLP
B PCR
C Agarose gel electrophoresis
D Genetic printing

The correct answer is:
Agarose gel electrophoresis

Solution:
Agarose gel electrophoresis (AGE) process is a method of separating nucleic acids based on their size as these molecules move from negative to positive pole due to the developed potential difference. The agarose gel has equal sized pores in which the bigger fragment will move slower than the smaller one supporting separation of the nucleic acids.
These endonucleases make specific cut at specific sequence of the DNA called as recognition site. These sequences are palindromic in nature. As the sequences are specific, these enzymes can be used to make cuts and alter DNA sequence in almost all types of cells. The sequence size or length will vary depending on the type or size of protein it expresses.
AGE will help in separating the DNA sequences as per the size/length and assist in monitoring progress of enzyme digestion

Topic: Biology, Biotechnology - Principles and Processes, NEET
Which of the following processes is involved in the assisted reproductive technology known as 'GIFT'?

Options:
A Transfer of zygote into the fallopian tube
B Transfer of zygote into the uterus
C Transfer of ovum collected from donor to the fallopian tube
D Transfer of ovum collected from donor to the uterus

The correct answer is:
Transfer of ovum collected from donor to the fallopian tube

Solution:
'GIFT' stands for 'gamete intra-fallopian tube transfer'. It is an assisted reproductive technology used in females who cannot produce an ovum but are capable of providing the necessary conditions for fertilization and implantation. In this technique, the ovum is collected from a donor female and is transported to the fallopian tube of the mother.

Topic: Biology, Reproductive Health, NEET
Which of the following processes is reversible?

Options:
A Transfer of heat by conduction
B Transfer of heat by radiation
C Isothermal compression
D Electrical heating of a nichrome wire

The correct answer is:
Isothermal compression

Solution:
Isothermal compression is reversible, for example, carnot cycle, heat engine.

Topic: Physics, Thermodynamics, NEET, NEET 2005
Which of the following processes is used for the separation of colloidal particles from particles of molecular dimensions?

Options:
A Dialysis
B Coagulation
C Plamolysis
D None of these

The correct answer is:
Dialysis

Solution:
For separation of colloidal particles from particles of molecular dimension, dialysis is used. In dialysis parchment paper dialysis bag is used which filters the particles of the molecular dimension and only colloidal particles are present infiltrate.

Topic: Chemistry, Surface Chemistry, NEET
Which of the following processes of decomposition produces a substance resistant to microbial action?

Options:
A catabolism
B mineralisation
C humification
D leaching

The correct answer is:
humification

Solution:
Detritivores (e.g., earthworm) break down detritus into smaller particles. This process is called fragmentation. By the process of leaching, watersoluble inorganic nutrients go down into the soil horizon and get precipitated as unavailable salts. Bacterial and fungal enzymes degrade detritus into simpler inorganic substances. This process is called as catabolism. It is important to note that all the above steps in decomposition operate simultaneously on the detritus.Humification and mineralisation occur during decomposition in the soil. Humification leads to accumulation of a dark coloured amorphous substance called humus that is highly resistant to microbial action and undergoes decomposition at an extremely slow rate. Being colloidal in nature it serves as a reservoir of nutrients. The humus is further degraded by some microbes and release of inorganic nutrients occur by the process known as mineralisation.

Topic: Biology, Ecosystem, NEET
Which of the following processes produce the maximum amount of ATP on the aerobic breakdown of one molecule of glucose?

Options:
A Glycolysis
B Kreb's cycle
C Electron transport system
D Fermentation

The correct answer is:
Electron transport system

Solution:
The energy produced during the breakdown of one glucose molecule in ETS contributes to maximum amount of ATP in Kreb's cycle, accounting to about 34 ATP. Glycolysis yields 2ATP on one glucose molecule breakdown and 2 Kreb's cycles produce upto 4 ATP.

Topic: Biology, Respiration in Plants, NEET
Which of the following processes requires maximum energy

Options:
A Mgg ⟶ Mg+g+e–
B Mg+g ⟶Mg+2g+e–
C Nag⟶ Na+g+e–
D Na+g⟶Na2+g+e–

The correct answer is:
Na+g⟶Na2+g+e–

Solution:
Na+ has stable electronic configuration (1s2,2s22p6). If remove extra electrone that is present in inner shell, so need more energy to remove it.(insufficient amount of energy)

Topic: Chemistry, Classification of Elements and Periodicity in Properties, NEET
Which of the following product can not be formed when ethanolic NH3reacts with C2H5Cl?

Options:
A Aniline
B N-ethylethanamine
C N,N-Diethylethanamine
D Quaternary ammonium salt

The correct answer is:
Aniline

Solution:
Correct Option is : (A)
Aniline

Topic: Chemistry, Amines, NEET
Which of the following products is formed when a carbonyl compound reacts with ammonia?

Options:
A Oxime
B Amide
C Imine
D Guanidine derivative

The correct answer is:
Imine

Solution:
Correct Option is : 3
Imine

Topic: Chemistry, Aldehydes and Ketones, NEET
Which of the following products is formed when a carbonyl compound reacts with hydroxylamine?

Options:
A Oxime
B Imine
C Semicarbazone
D 2,4-DNP derivative

The correct answer is:
Oxime

Solution:
Correct Option is : 1
Oxime

Topic: Chemistry, Aldehydes and Ketones, NEET
Which of the following products is formed when n-heptane is passed over (Al2O3+Cr2O3) catalyst at 773K?

Options:
A Benzene
B Toluene
C Polyheptane
D Cycloheptane

The correct answer is:
Toluene

Solution:
Here toluene is formed as follows

Topic: Chemistry, Hydrocarbons, NEET
Which of the following products of genetic engineering are not correctly matched with their use?

Options:
A Tissue Plasminogen Activator: Breaks blood clot
B Interferons: Cancer treatment
C Enzyme DNAse: Helps in cell division and repair of tissues
D Humulin: To treat insulin dependent diabetes

The correct answer is:
Enzyme DNAse: Helps in cell division and repair of tissues

Solution:
Some products of genetic engineering and their uses

No	Name of the gene/Product	Use

1.	Tissue Plasminogen Activator (TPA)	Used to prevent or reverse blood clots

2.	Human Growth hormone producer gene	To treat pituitary dwarfism

3.	Tissue Growth Factor Beta (TGF-B)	Promotes new blood vessels and epiderminal growth. Useful in wound healing and burns.

4.	Human Blood Clotting Factor â VIII	To treat haemophilia

5.	Human Insulin (Humulin)	To treat insulin dependent diabetes

6.	Enzyme DNAse	To treat cystic fibrosis

7.	Bovine Growth Hormone	To increase cattle yield

8.	Recombinant Vaccines	For prophylaxis of human & animal viral diseases eg. Hepatitis B

9.	Genetically engineered bacteria and other microbes	For improved production of industrial enzymes, citric acid& ethanol.

10.	Genetically engineered bacteria	Can accelerate the degradation of Oil pollutants or certain chemicals in toxic wastes.

Topic: Biology, Biotechnology and Its Applications, NEET
Which of the following propagates through leaf-tip?

Options:
A walking fern
B sprout-leaf plant
C Marchantia
D moss.

The correct answer is:
walking fern

Solution:
Adiantum is also called walking fern. In Adiantum, the tips of the leaves, on coming in contact with the soil give out adventitious roots which, in turn, produce new leaves and develop into new plants.

Topic: Biology, Plant Kingdom, NEET, NEET 2004
Which of the following properties are not of Nylon 6,6?

Options:
A High Tensile Strength
B Crystalline
C Resistant to Heat
D Strong intermolecular force

The correct answer is:
Resistant to Heat

Solution:
Correct Option is : 3
Resistant to Heat

Topic: Chemistry, Polymers, NEET
Which of the following properties correctly describes the plant depicted in this diagram?

Options:
A It produces seeds but they are not enclosed in fruits.
B It has gametophyte and sporophyte which are independent of each other.
C It is a vascular cryptogam placed under class Lycopsida
D It shows protonema stage in its life cycle and doesn't bear true roots

The correct answer is:
It has gametophyte and sporophyte which are independent of each other.

Solution:
The diagram given is of Equisetum. It is a pteridophyte which is placed under class Sphenopsida. It is a vascular cryptogam (having vascular tissue but not producing seeds). It has a haplo-diplontic life cycle in which the gameyophyte and sporophyte are independent of each other. Production of seeds without fruits is a characteristic of gymnosperms. Protonema stage and plant without true roots are seen mosses.

Topic: Biology, Plant Kingdom, NEET