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

Options:
A ClF
B BrF
C ClF5
D BrF5

The correct answer is:
ClF

Solution:
Correct Option is : 1
ClF

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which of the following is colourless neutral gas?

Options:
A N2O
B N2O3
C N2O5
D NO2

The correct answer is:
N2O

Solution:
Correct Option is : 1
N2O

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which of the following is commonly called baker's yeast'?

Options:
A A rod-shaped bacterium Lactobacillus.
B An eukaryote S. cerevisiae.
C A spherical bacterium Staphylococci.
D A spherical bacterium Streptococci.

The correct answer is:
An eukaryote S. cerevisiae.

Solution:
'Saccharomyces cerevisiae' is commonly known as baker's yeast' or brewer's yeast. It is used for bread making. It is also used for production of beverages like whisky, wine,brandy and rum. It is used for fermenting fruit juices and malted cereals for making ethanol.

Topic: Biology, Microbes in Human Welfare, NEET
Which of the following is commonly called catecholamines?

Options:
A Mineralocorticoids
B Glucocorticoids
C Adrenaline
D More than one option as correct

The correct answer is:
Adrenaline

Solution:
The adrenal medulla secretes two hormones called adrenaline or epinephrine and noradrenaline or norepinephrine. These are commonly called catecholamines. Adrenaline and noradrenaline are rapidly secreted in response to the stress of any kind and during emergency situations and are called emergency hormones or hormones of fight or flight. These hormones increase alertness, pupillary dilation, piloerection (raising of hairs), sweating, etc. Both the hormones increase the heartbeat, the strength of heart contraction and the rate of respiration. Catecholamines also stimulate the breakdown of glycogen resulting in an increased concentration of glucose in the blood. In addition, they also stimulate the breakdown of lipids and proteins.

Topic: Biology, Chemical Coordination and Integration, NEET
Which of the following is commonly used as a vector for introducing a DNA fragment in human lymphocytes?

Options:
A λ phage
B Ti plasmid
C Retrovirus
D pBR 322

The correct answer is:
Retrovirus

Solution:
Usually, a retrovirus is used as a vector for introducing a DNA fragment in human cells. They have used as a vector in gene therapy to introduce the desired gene so as to replace the functioning of a defective gene

Ex: Severe Combined Immune Deficiency (SCID) is a disease caused due to a defect in the gene for the enzyme adenosine deaminase. In gene therapy against it, lymphocytes are extracted from the bone marrow of the patient. These are grown in a culture outside the body. A functional ADA rDNA, using a retroviral vector, is then introduced into these lymphocytes. These are reinjected into the patient's bone marrow.
Î»-phage allows cloning of DNA fragments up to 23 kb lengths. Ti-plasmid is usually used for plants. pBR322 is an artificial cloning vector, usually used for bacteria.

Topic: Biology, Biotechnology - Principles and Processes, NEET, NEET 2018
Which of the following is commonly used as a vector for introducing a DNA fragment in human lymphocytes?

Options:
A λ phage
B Ti plasmid
C Retrovirus
D pBR 322

The correct answer is:
Retrovirus

Solution:
Usually, a retrovirus is used as a vector for introducing a DNA fragment in human cells. They have used as a vector in gene therapy to introduce the desired gene so as to replace the functioning of a defective gene

Ex: Severe Combined Immune Deficiency (SCID) is a disease caused due to a defect in the gene for the enzyme adenosine deaminase. In gene therapy against it, lymphocytes are extracted from the bone marrow of the patient. These are grown in a culture outside the body. A functional ADA rDNA, using a retroviral vector, is then introduced into these lymphocytes. These are reinjected into the patient's bone marrow.
Î»-phage allows cloning of DNA fragments up to 23 kb lengths. Ti-plasmid is usually used for plants. pBR322 is an artificial cloning vector, usually used for bacteria.

Topic: Biology, Biotechnology - Principles and Processes, NEET
Which of the following is considered an electron-withdrawing group relative to hydrogen?

Options:
A Methyl (–CH3)
B Ethyl (–CH2–CH3)
C Chlorine (Cl)
D Hydrogen (H)

The correct answer is:
Chlorine (Cl)

Solution:
Halogens, including chlorine, are considered electron-withdrawing groups relative to hydrogen.

Topic: Chemistry, General Organic Chemistry, NEET
Which of the following is considered an extensive property in thermodynamics?

Options:
A Temperature
B Pressure
C Volume
D Density

The correct answer is:
Volume

Solution:
Extensive properties, such as volume, depend on the quantity or size of matter present in the system.

Topic: Chemistry, Thermodynamics (C), NEET
Which of the following is considered an intensive property in thermodynamics?

Options:
A Mass
B Internal energy
C Temperature
D Enthalpy

The correct answer is:
Temperature

Solution:
Intensive properties, like temperature, do not depend on the quantity or size of matter present in the system.

Topic: Chemistry, Thermodynamics (C), NEET
Which of the following is considered as age-old cottage industry?

Options:
A Animal husbandry
B Beekeeping
C Fisheries
D Sericulture

The correct answer is:
Beekeeping

Solution:
Beekeeping (apiculture) is the practice of managing honeybee colonies to attain desired objectives like honey production and crop pollination.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
Which of the following is considered as the sugar factory of the cell?

Options:
A Chloroplast
B Mitochondrion
C Endoplasmic reticulum
D Ribosome

The correct answer is:
Chloroplast

Solution:
The synthesis of sugar takes place during photosynthesis in chloroplast of autotrophic eukaryotes.

Topic: Biology, Cell - The Unit of Life, NEET
Which of the following is considered to be an anticancer species?

Options:
A

B

C

D

The correct answer is:

Solution:
Cis-platin is the isomer of $\left[\mathrm{Pt}\left(\mathrm{NH}_3\right)_2 \mathrm{Cl}_2\right]$ which is used as an anticancer drug for treating several types of malignant tumour.

Topic: Chemistry, Coordination Compounds, NEET, NEET 2004
Which of the following is considered to be an anticancer species?

Options:
A ​
B ​
C ​
D ​

The correct answer is:
​

Solution:
Cis isomer of [PtNH32Cl2] is used as an anticancer drug for treating several types of malignant tumours.
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Topic: Chemistry, Coordination Compounds, NEET
Which of the following is correct?

Options:
A A woman conceives as well as becomes pregnant on the day of fertilization
B A woman conceives as well as becomes pregnant about a week after fertilization
C A woman conceives on the day of fertilization while she becomes pregnant a week after fertilization
D A woman becomes pregnant on the day of fertilization while she conceives a week after fertilization

The correct answer is:
A woman conceives on the day of fertilization while she becomes pregnant a week after fertilization

Solution:
Conception is the process of fertilization. Thus, a woman will conceive when a haploid male gamete fuses with the haploid female gamete to form a diploid zygote in the fallopian tube. However, pregnancy occurs when the blastula undergoes implantation in the uterus which happens 7 days after fertilization.

Topic: Biology, Human Reproduction, NEET
Which of the following is correct?

Options:
A Spores are invariably haploid
B Gametes are generally haploid
C Both spores and gametes are invariably haploid
D Gametes are invariably haploid

The correct answer is:
Gametes are invariably haploid

Solution:
Spores are formed in lower plants by mitotic division and they may be diploid but gametes are always formed by meiosis and they are always haploid.

Topic: Biology, Reproduction in Organisms, NEET
Which of the following is correct?

Options:
A All fungi are filamentous.
B Transfer of DNA cannot take place from one bacteria to another.
C A virus cannot have both DNA and RNA.
D Protists can reproduce only asexually.

The correct answer is:
A virus cannot have both DNA and RNA.

Solution:
The virus is a nucleoprotein entity which can utilise the synthetic machinery of a living cell of another organism for its multiplication that does not involve growth and division. The nucleic acid is either DNA or RNA but never both. DNA containing viruses are called deoxyviruses, whereas RNA containing viruses are termed as riboviruses.

Topic: Biology, Biological Classification, NEET
Which of the following is correct?

Options:
A The H+ released from carbonic acid combines with haemoglobin to form haemoglobinic acid.
B Oxyhaemoglobin of erythrocytes is alkaline.
C More than 70% of carbon dioxide is transferred from tissues to the lungs in the form of carbamino compounds.
D In a healthy person, the haemoglobin content is more than 25 gm per 100 mL.

The correct answer is:
The H+ released from carbonic acid combines with haemoglobin to form haemoglobinic acid.

Solution:
Haemoglobinic acid is a very weak acid formed inside the red blood cells when hydrogen ions produced by the dissociation of carbonic acid combine with the haemoglobin.

Topic: Biology, Breathing and Exchange of Gases, NEET
Which of the following is correct?

Options:
A The number of electrons present in the valence shell of S in SF6 is 12
B The rates of reactions involving ionic compounds are very slow.
C According to VSEPR theory SnCl2 is a linear molecule
D The correct order of ability to form ionic compounds among Na+,Mg2+ and Al3+ is Al3+>Mg2+>Na+

The correct answer is:
The number of electrons present in the valence shell of S in SF6 is 12

Solution:
In SF6 molecule, there are six bond pairs thus sulphur has 12 valence electrons. Rest other statements are incorrect as ionic reactions are fast, SnCl2 is bent and the ability to formed ionic compound is Al3+<Mg2+<Na+ .

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which of the following is correct?

Options:
A Cells of all living organisms have a nucleus
B Both animal and plant cells have a well defined cell wall
C In prokaryotes, there are no membrane bound organelles
D Cells are formed de novo from abiotic materials

The correct answer is:
In prokaryotes, there are no membrane bound organelles

Solution:
In prokaryotes, there are no membrane bound organelles

Topic: Biology, Cell - The Unit of Life, NEET
Which of the following is correct about a constituent of biogas?

Options:
A 30%-40% methane
B 50%-70% CO2
C 50%-70% methane
D 20% methane

The correct answer is:
50%-70% methane

Solution:
Biogas typically refers to a mixture of different gases produced by the breakdown of many organic matters in the absence of some oxygen. Biogas can be produced from regionally available raw materials such as recycled waste. It is a renewable energy source and in many cases exerts a very small carbon footprint. It has 50%-70% methane.

Topic: Biology, Microbes in Human Welfare, NEET
Which of the following is CORRECT about amino acid?

Options:
A It is a compound containing amino -NH2 and acidic group -COOH
B It is a substituted methane.
C Based on nature of 'R' group they are of many types
D All of these

The correct answer is:
All of these

Solution:
Amino acids are monomers of proteins. As the name suggests amino acids consist of amino and acidic groups. As the two functional groups are of opposite nature, amino acids are said to perform many reactions and thus are part of a number of processes. The structure of amino acid is similar to methane with four different groups instead of hydrogen. Hence amino acids are substituted methanes. One bond out of four has R which means it is the variable group. Due to presence of variable groups different types of Amino acids are possible. Example: if R is H, the amino acid is Glycine.

Topic: Chemistry, Biomolecules, NEET
Which of the following is correct about apomixis?

I. An apomixis is a form of sexual reproduction.
II. Apomixis is a mechanism to produce seeds without fertilization.
III. Apomictic embryos are similar in their genetic nature.
IV. Examples of apomixis are Citrus and mango.

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

The correct answer is:
II, III and IV

Solution:
Apomixis is a mechanism by which seeds develop without fertilization. It is a type of asexual reproduction which mimics sexual reproduction. Since there is no fertilization taking place all the apomictic embryos have similar genetic nature. Examples are Citrus and mango.

Topic: Biology, Sexual Reproduction in Flowering Plants, NEET
Which of the following is correct about association areas of brain?

Options:
A They are large regions that are neither clearly sensory nor motor in function.
B They are responsible for communication and memory.
C They control several emotional reactions.
D Both (A) and (B)

The correct answer is:
Both (A) and (B)

Solution:
The cerebral cortex contains motor areas, sensory areas, and large regions that are neither clearly sensory nor motor in function. These regions called the association areas are responsible for complex functions like intersensory associations, memory, and communication.

Topic: Biology, Neural Control and Coordination, NEET
Which of the following is correct about Atropa belladonna?

Options:
A

Family	Plant type

Solanaceae	Ornamental plant

B

Family	Plant type

Solanaceae	Hallucinogenic plant

C

Family	Plant type

Fabaceae	Immunomodulator plant

D

Family	Plant type

Fabaceae	Depressant plant

The correct answer is:

Family	Plant type

Solanaceae	Hallucinogenic plant

Solution:
Atropa belladonna, common name deadly nightshade, is perennial plant. It is a poisonous herb and belong the to the family Solanaceae (tomatoes, potatoes).
The foliage and berries contain tropane alkaloids which are considered extremely toxic on ingestion. These toxins of the plant have been found to cause delirium and hallucinations. Pilocarpine is the antidote for the belladonna.
Plants grown for decorative purpose in gardens, house and landscapes are called as ornamental plants. Roses, daffodils, lilac etc. are considered ornamental plants.
Plant substances that stimulates or suppresses the components of immune system (innate and adaptive immune responses) are said to be plant immunomodulator. Many herbal plants are considered as immunomodulator.

Topic: Biology, Morphology of Flowering Plants, NEET
Which of the following is correct about binomial nomenclature?

Options:
A Both the words in binomial name, when handwritten, are separately underlined.
B Both generic name and the specific epithet are printed in italics.
C Generic name starts with a small letter and the Specific epithet starts with a small letter.
D Both A and B are correct

The correct answer is:
Both A and B are correct

Solution:
Biological names are generally in Latin and written in italics. The first word in a biological name represents the genus while the second component denotes the specific epithet. When these words are handwritten, they are separately underlined or printed in italics to indicate their Latin origin. The first word of the genus starts with a capital letter while the specific epithet starts with a small letter.

Topic: Biology, The Living World, NEET
Which of the following is correct about bonding in BeCl2?

Options:
A Has 3 centered 2e- bonds
B Has 3 centered 4e- bonds
C Has 3 centered 1e- bonds
D Has 3 centered 3e- bonds

The correct answer is:
Has 3 centered 4e- bonds

Solution:
Correct Option is : 2
Has 3 centered 4e- bonds

Topic: Chemistry, s Block Elements, NEET
Which of the following is correct about embryo development in Periplaneta americana?

Options:
A No metamorphosis
B Direct metamorphosis
C Complete metamorphosis
D Paurometaboly

The correct answer is:
Paurometaboly

Solution:
Cocokroaches do not show a direct change via metamorphosis. Rather it undergoes a series of changes via molting process during its nymphal stages. Such gradual progression of metamorphosis is called as paurometabolic metamorphosis.

Topic: Biology, Structural Organisation in Animals, NEET
Which of the following is correct about flowering in rice and wheat plants?

Options:
A Rice needs a continuous uninterrupted long period of light to flower while wheat needs a continuous uninterrupted long period of darkness to flower
B Wheat needs a continuous uninterrupted long period of light to flower while rice needs a continuous uninterrupted long period of darkness to flower
C Both rice and wheat need a continuous uninterrupted long period of light to flower
D Both rice and wheat need a continuous uninterrupted long period of darkness to flower

The correct answer is:
Wheat needs a continuous uninterrupted long period of light to flower while rice needs a continuous uninterrupted long period of darkness to flower

Solution:
Wheat is a long day plant. These plants flowers only when they exposed to critical photoperiod or photoperiod longer than their critical day length. They need a continuous (uninterrupted) light period for flowering.
Rice is a short day or long night plant. These plants give flowers on exposure to photoperiod equal to or shorter than their critical day length. They need a continuous (uninterrupted) dark period for flowering.

Topic: Biology, Plant - Growth and Development, NEET
Which of the following is correct about global warming?

Options:
A During the past decade, the temperature of Earth has increased by 0.6 oC.
B Without the greenhouse effect, the average temperature at the surface of Earth would have been -18 oC rather than the present average of -15 oC.
C The rise in temperature is leading to deleterious changes in the environment and resulting in odd climatic changes called El Nino effect.
D More than one option is correct

The correct answer is:
The rise in temperature is leading to deleterious changes in the environment and resulting in odd climatic changes called El Nino effect.

Solution:
Without the greenhouse effect, the average temperature at surface of Earth would have been a chilly (â18oC) rather than the present average of 15 oC.
During the past century, the temperature of Earth has increased by 0.6oC.
El Nino climatic effect is caused to increase in temperature of water in the eastern tropical Pacific ocean. Due to this, there is high air pressure in the western Pacific and low air pressure in the eastern Pacific. The areas close to the warmer areas get severe rainfall while the areas away may have severe drought causing an imbalance in climate.

Topic: Biology, Environmental Issues, NEET
Which of the following is correct about imbibition?

Options:
A It is a kind of facilitated diffusion.
B The affinity between the adsorbant and the liquid is not a requisite.
C Absorption of liquid by seeds and wet wood is an classical example of it.
D None of the above

The correct answer is:
None of the above

Solution:
Imbibition is a type of diffusion because water movement is along a concentration gradient; the seeds and other such materials have almost no water; hence, they absorb water easily. Water potential gradient between the absorbent and the liquid imbibed is essential for imbibition. In addition, for any substance to imbibe any liquid, the affinity between the adsorbant and the liquid is also a pre-requisite. The classical examples of imbibition are absorption of water by seeds and dry wood.

Topic: Biology, Transport in Plants, NEET
Which of the following is correct about metaphase-I?

Options:
A Bivalents are arranged at equator
B Univalents are arranged at equator
C Non-homologus chromosomes forms pair
D Spindle fibers are attached at chromomere

The correct answer is:
Bivalents are arranged at equator

Solution:
During the prophase of meiosis I, homologous chromosomes pair and form synapses. The paired chromosomes are called bivalents. The bivalent has two chromosomes and four chromatids, with one chromosome coming from each parent. The bivalent chromosomes align on the equatorial plate
during metaphase I. The microtubules from the opposite poles of the spindle attach to the kinetochore of homologous chromosomes.

Topic: Biology, Cell Cycle and Cell Division, NEET
Which of the following is correct about non-living objects?

Options:
A Doesn't grow
B Show intrinsic growth
C Show extrinsic growth
D Show both extrinsic and intrinsic growth

The correct answer is:
Show extrinsic growth

Solution:
Non-living things show only extrinsic growth or growth from outside, whereas intrinsic growth is a characteristic of living organisms only.

Topic: Biology, The Living World, NEET
Which of the following is correct about organism develop through parthenogenesis?

Options:
A They show a 50% similarity to father
B They show a 50% similarity to mother
C They show a 100% similarity to father
D They show a 100% similarity to mother

The correct answer is:
They show a 100% similarity to mother

Solution:
In some organisms like rotifers, honeybees and even some lizards and birds (turkey), the female gamete undergoes development to form new organisms without fertilization. This phenomenon is called parthenogenesis.

Topic: Biology, Reproduction in Organisms, NEET
Which of the following is correct about pBR322?

Options:
A ori - original restriction endonuclease
B rop - codes for proteins that help in replication
C Hind III and EcoRI - Selectable markers
D tetR - gene that makes bacterium sensitive to tetracycline

The correct answer is:
rop - codes for proteins that help in replication

Solution:
Plasmid vector is a tool used in genetic engineering for transferring foreign genes and making transformants. The antibiotic resistance section is used as a marker that contains different restriction sites for adding deleting DNA sequences. rop is the region in the plasmid responsible for replication of the plasmid and making copies of it. Ori- is the origin of replication. Hind III and EcoRI are recognition sites for these enzymes.

Topic: Biology, Biotechnology - Principles and Processes, NEET
Which of the following is correct about phases of the cell cycle?

Options:
A In G1-phase, DNA content is double the amount of DNA present in the original cell.
B DNA replication takes place in S-phase.
C A short interphase is followed by a long mitotic phase.
D G2-phase follows mitotic phase.

The correct answer is:
DNA replication takes place in S-phase.

Solution:
S Phase or Synthesis phase-
It is synthetic phase.
It occurs between G1 phase and G2 phase.
Replication of DNA takes place during this S Phase and the DNA content doubles.

Topic: Biology, Cell Cycle and Cell Division, NEET
Which of the following is correct about phenylketonuria?

Options:
A It is an example of pleiotropy
B It is an autosomal dominant disease
C It is caused due to single gene mutation
D Both (A) and (C)

The correct answer is:
Both (A) and (C)

Solution:
A single gene can exhibit multiple phenotypic expressions. Such a gene is called a pleiotropic gene. An example of this is the disease phenylketonuria an autosomal recessive disorder, which occurs in humans. The disease is caused by a mutation in the gene that codes for the enzyme phenylalanine hydroxylase (single gene mutation). This manifests itself through phenotypic expression characterized by mental retardation and a reduction in hair and skin pigmentation.

Topic: Biology, Principles of Inheritance and Variation, NEET