datavorous/entrance-exam-dataset huggingface dataset:
Carbohydrates are essential for life in both plants and animals. Name the carbohydrates that are used as storage molecules in plants and animals, also name the carbohydrate which is present in wood or in the fiber of cotton cloth.

Options:
A Cellulose is used as a storage molecule in plants and in animals and Glycogen is present in wood or in the fiber of cotton cloth.
B Cellulose is used as a storage molecule in plants and in animals and is also present in wood or in the fiber of cotton cloth.
C Glycogen is used as a storage molecule in plants and in animals and also in wood or in the fiber of cotton cloth.
D Glycogen is used as a storage molecule in plants and in animals and Cellulose is present in wood or in the fiber of cotton cloth.

The correct answer is:
Glycogen is used as a storage molecule in plants and in animals and Cellulose is present in wood or in the fiber of cotton cloth.

Solution:
Correct Option is : (D)
Glycogen is used as a storage molecule in plants and in animals and Cellulose is present in wood or in the fiber of cotton cloth.

Topic: Chemistry, Biomolecules, NEET
Carbon and silicon both belong to the group 14, but in spite of the stoichiometric similarity, the dioxides (i.e., carbon dioxide and silicon dioxide) differ in their structures. Comment.

Options:
A Carbon forms a linear structure due to sp hybridization
B Silicon forms a network structure due to sp³ hybridization
C Carbon has a higher electronegativity than silicon
D Silicon has a higher atomic radius than carbon

The correct answer is:
Silicon forms a network structure due to sp³ hybridization

Solution:
Correct Option is : (B)
Silicon forms a network structure due to sp³ hybridization

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
Carbon dioxide is the major limiting factor for photosynthesis. With respect to this, choose the correct statement from the following.

Options:
A Crops like tomato and bell pepper use increased levels of CO2 for higher productivity and are hence called greenhouse crops.
B The current availability of CO2 levels is limiting to C4 plants.
C C4 plants show saturation at about 450 µlL-1 while C3 responds to increased CO2 concentration and saturation is seen only beyond 360 µlL-1.
D Increase in concentration up to 0.03 per cent can cause an increase in CO2 fixation rates.

The correct answer is:
Crops like tomato and bell pepper use increased levels of CO2 for higher productivity and are hence called greenhouse crops.

Solution:
The fact that C3 plants respond to higher CO2 concentration by showing increased rates of photosynthesis leading to higher productivity has been used for some greenhouse crops such as tomatoes and bell pepper. They are allowed to grow in a carbon dioxide enriched atmosphere that leads to higher yields.
The current availability of CO2 levels is limiting to C3 plants.
C4 plants show saturation at about 360 µlL-1 while C3 responds to increased CO2 concentration and saturation is seen only beyond 450 µlL-1.
Increase in concentration up to 0.05 per cent can cause an increase in CO2 fixation rates.

Topic: Biology, Photosynthesis in Higher Plants, NEET
Carbon dioxide is transported from tissues to respiratory surface by only:

Options:
A Plasma and erthrocytes
B Plasma
C Erythrocytes
D Erythrocytes and leucocytes

The correct answer is:
Plasma and erthrocytes

Solution:
CO2 from the respiratory tissues to the lungs is transported by the blood in 3 ways:
(i) In dissolved state or as a physical solution: Very small amount physically dissolved in plasma (7% i.e. â 0.3 ml of CO2 by every 100 ml of blood)
(ii) Bicarbonate ions: â 70% (i.e., â 2.5 ml per 100 ml of blood) CO2 diffuses in plasma & then into RBCs were it (in the presence of carbonic anhydrase) combines with H2O to form carbonic acid which is almost spontaneously dissociated into hydrogen ion & bicarbonate ions.
(iii) Carbaminohaemoglobin: â23 % (i.e., â 1 ml of CO2 per 100 ml of blood) combines with haemoglobin forming an unstable compound.

Topic: Biology, Breathing and Exchange of Gases, NEET
Carbon dioxide is transported in blood in the form of

Options:
A Haemoglobin
B Oxyhaemoglobin
C Carbonate
D Bicarbonate

The correct answer is:
Bicarbonate

Solution:
About 7% of carbon dioxide is transported as dissolved in plasma, 23% as carbaminohaemoglobin, and 70% as bicarbonates.

Topic: Biology, Breathing and Exchange of Gases, NEET
Carbon dioxide joins the photosynthetic pathway in

Options:
A PS I
B PS II
C light dependent reaction
D light independent reaction

The correct answer is:
light independent reaction

Solution:
Photosynthesis consists of two steps : in light reaction light energy is trapped to form ATP and in dark reaction carbon dioxide is reduced to form glucose, The dark reactions or Blackman's reactions or biosynthetic phase involves three steps: (i) Fixation of CO2 , (ii) Reduction of CO2 and (iii) Synthesis of glucose. It is independent of light but product of light reaction are consumed.

Topic: Biology, Photosynthesis in Higher Plants, NEET
Carbon monoxide is a pollutant as it

Options:
A inactivates nerves and causes numbness
B inhibits glycolysis
C combines with oxygen and shifts oxygen dissociation curve
D combines with haemoglobin and displaces oxygen

The correct answer is:
combines with haemoglobin and displaces oxygen

Solution:
Carbon monoxide is a harmful pollutant. It is released from the incomplete combustion of fossil fuel. The hemoglobin has 200 times more affinity towards carbon monoxide than oxygen. So, whenever a person inhales carbon monoxide it will combine with hemoglobin and form carboxyhemoglobin that will not be able to deliver oxygen to the tissue. It makes our nervous system inactive and causes drowsiness. It ultimately leads to death.

Topic: Biology, Environmental Issues, NEET
Carbon, silicon and germanium atoms have four valence electrons each. Their valence and conduction bands are separated energy band gaps represented $\left(E_g\right)_C,\left(E_g\right)_{S i}$, and $\left(E_g\right)_{G e}$ respectively. Which one of the following relationship is true in their case?

Options:
A $\left.\left(\mathrm{E}_g\right)_{\mathrm{C}}>\mathrm{E}_g\right)_{\mathrm{Si}}$
B $\left.\left(\mathrm{E}_g\right)_{\mathrm{C}} < \mathrm{E}_g\right)_{\mathrm{Si}}$
C $\left.\left(\mathrm{E}_g\right)_{\mathrm{C}}=\mathrm{E}_g\right)_{\mathrm{Si}}$
D $\left(\mathrm{E}_g\right)_{\mathrm{C}}>\left(\mathrm{E}_g\right)_{\mathrm{Ge}}$

The correct answer is:
$\left.\left(\mathrm{E}_g\right)_{\mathrm{C}}>\mathrm{E}_g\right)_{\mathrm{Si}}$

Solution:
Band gap of carbon is $5.5 \mathrm{eV}$ while that of silicon is $1.1 \mathrm{eV}$
$$
\left(E_g\right)_C>\left(E_B\right)_S
$$

Topic: Physics, Semiconductors, NEET, NEET 2005
Carbon, silicon and germanium have four valence electrons each. These are characterised by valence and conduction bands separated by energy band gap respectively equal to (Eg)C, (Eg)Siand (Eg)Ge. Which of the following statements is true?

Options:
A (Eg)Si< (Eg)Ge< (Eg)C
B (Eg)C< (Eg)Ge> (Eg)Si
C (Eg)C> (Eg)Si> (Eg)Ge
D (Eg)C= (Eg)Si= (Eg)Ge

The correct answer is:
(Eg)C> (Eg)Si> (Eg)Ge

Solution:
Correct Option is : (C)
(Eg)C> (Eg)Si> (Eg)Ge

Topic: Chemistry, Semiconductors, NEET
Carbon skeleton produced during respiration is used as precursor for biosynthesis of other molecules in the cell thus respiration is:

Options:
A Catabolic process
B Anabolic process
C Amphibolic process
D Developmental process

The correct answer is:
Amphibolic process

Solution:
Since respiration involves breakdown of substrates, it is traditionally considered a catabolic process. The different carbon skeletons produced in the pathway are used for synthesis of some biomolecules, like during breakdown and synthesis of proteins, respiratory intermediates forms the link. Because the respiratory pathway is involved in both anabolism and catabolism it is considered as amphibolic pathway.

Topic: Biology, Respiration in Plants, NEET
Carbonic anhydrase enzyme is present in _________ , _________ and for its activity the enzyme requires _______ as a cofactor.

Options:
A RBC, pancreatic cells and Zn2+
B Plasma, WBC and Mn2+
C RBC, plasma and Ca2+
D Leukocytes, macrophages and Zn2+

The correct answer is:
RBC, pancreatic cells and Zn2+

Solution:
The carbonic anhydrases form a family of enzymes that catalyze the interconversion between carbon dioxide and water and the dissociated ions of carbonic acid. The active site of most carbonic anhydrases contains a zinc ion.
The bivalent form of zinc (Zn++) is a constituent of enzymes like carbonic anhydrase, hexokinase, alcohol dehydrogenase, lactic dehydrogenase and carboxypeptidase.

Topic: Chemistry, Biomolecules, NEET
Carborundum is obtained when silica is heated at high temperature with

Options:
A carbon
B carbon monoxide
C carbon dioxide
D calcium carbonate

The correct answer is:
carbon

Solution:
SiO 2 (Quartz or sand)  + 2C → 2,000 -  2,500 o C Si + 2CO
Si+CâSiC

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
Carboxylic acid on treating with which reagent does not give acid chloride?

Options:
A PCl5
B PCl3
C SOCl2
D Cl2

The correct answer is:
Cl2

Solution:
CH3COOH+Cl2→CH2ClCOOH+HCl
CH3COOH+PCl5→CH3COCl+POCl3+HCl
CH3COOH+SOCl2→CH3COCl+SO2+HCl
3CH3COOH+PCl3→3CH3COCl+H3PO3

Topic: Chemistry, Carboxylic Acid Derivatives, NEET
Carboxylic acids contain carbonyl groups but do not show the nucleophilic addition reaction like aldehydes or ketones. Why?

Options:
A Carboxylic acids have a less polarized carbonyl group, making them less susceptible to nucleophilic attacks.
B Carboxylic acids have an acidic hydrogen atom in addition to the carbonyl group, making them prone to acid-base reactions instead.
C Aldehydes and ketones have a higher electron density on the carbonyl carbon, favoring nucleophilic additions.
D Carboxylic acids exhibit resonance stabilization so the partial positive charge on carbonyl carbon atom is reduced and that reduces the reactivity of the carbonyl group.

The correct answer is:
Carboxylic acids exhibit resonance stabilization so the partial positive charge on carbonyl carbon atom is reduced and that reduces the reactivity of the carbonyl group.

Solution:
Correct Option is : (D)
Carboxylic acids exhibit resonance stabilization so the partial positive charge on carbonyl carbon atom is reduced and that reduces the reactivity of the carbonyl group.

Topic: Chemistry, Aldehydes and Ketones, NEET
Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to their

Options:
A more extensive association of carboxylic acid via van der Waal's force of attraction.
B formation of carboxylate ion.
C formation of intramolecular H-bonding.
D formation of intermolecular H-bonding.

The correct answer is:
formation of intermolecular H-bonding.

Solution:
Carboxylic acid has a higher boiling point than aldehyde, ketone and even alcohols of comparable molecular mass.
This is due to their more extensive association through intermolecular H-bonding and it forms a dimer.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET, NEET 2018
Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to their

Options:
A More extensive association of carboxylic acid via van der Waals force of attraction
B Formation of carboxylate ion
C Formation of intramolecular H-bonding
D Formation of intermolecular H-bonding

The correct answer is:
Formation of intermolecular H-bonding

Solution:
Due to formation of stronger intermolecular H-bonding in carboxylic acid, association occurs. Hence, boiling point increases and become more than the boiling point of aldehydes, ketones and alcohols of comparable molecular masses.
Acid > alcohol > aldehyde > ketone
âAs extent of H-bond decreases so B.P. decreases

Topic: Chemistry, Carboxylic Acid Derivatives, NEET
Carboxylic acids serve as starting materials for the synthesis of which important organic compounds?

Options:
A Aldehydes and ketones
B Alcohols and ethers
C Amides and esters
D Amines and alkanes

The correct answer is:
Amides and esters

Solution:
Carboxylic acids serve as starting materials for several important organic compounds, including amides, esters, acid chlorides, and more.

Topic: Chemistry, Aldehydes, Ketones and Carboxylic Acids, NEET
Carcinoma refers to:

Options:
A malignant tumours of the connective tissue
B malignant tumours of the skin or mucous membrane
C malignant tumours of the colon
D benign tumours of the connective tissue

The correct answer is:
malignant tumours of the skin or mucous membrane

Solution:
Carcinoma refers to a malignant neoplasm of epithelial origin or cancer of the internal or external lining of the body. Carcinomas, malignancies of epithelial tissue, account for 80 to 90 percent of all cancer cases.
Related Theory
Carcinomas originate in the skin, lungs, breasts, pancreas, and other organs and glands. Lymphomas are cancers of lymphocytes. Leukaemia is cancer of the blood. It does not usually form solid tumours.

Topic: Biology, Human Health and Diseases, NEET, NEET 2003
Cardiac output is defined as the amount of blood

Options:
A Pumped by the left atrium per hour
B Received by the heart in one minute
C Pumped by each ventricle per minute
D Pumped by both ventricles per second

The correct answer is:
Pumped by each ventricle per minute

Solution:
The ventricle pumps blood outside into the circulation. Each ventricle pumps out around 70 mL of blood in each cardiac cycle. This is called the stroke volume. Heart rate is the number of times the heart beats per minute or in other words the number of times a cardiac cycle occurs in a minute. Thus the stroke volume (the volume pumped out by each ventricle in one cardiac cycle) multiplied by heart rate (the number of cardiac cycles occurring in a minute) gives us the cardiac output. Thus the cardiac output is the amount of blood pumped out by each ventricle per minute. It is around 5 L or 5000 mL in a healthy individual.

Topic: Biology, Body Fluids and Circulation, NEET
Carius method is used for determination of halogen. If 0.099 g organic compound gave 0.287g AgCl . The percentage of chlorine in the compound will be

Options:
A 28.6
B 71.71
C 35.4
D 64.2

The correct answer is:
71.71

Solution:
% of chlorine = 35.5143.5ÃMass of AgCl Mass of substanceÃ100
= 35.5143.5Ã0.2870.099Ã100=71.71%.

Topic: Chemistry, General Organic Chemistry, NEET
Carnivorous animals-lions and leopards, occupy the same niche but lions predate mostly larger animals and leopards take smaller ones. This mechanism of competition is referred to as

Options:
A character displacement
B altruism
C resource partitioning
D competitive exclusion

The correct answer is:
resource partitioning

Solution:
Carnivorous animals, lions and leopard, occupy the same niche but lion predates mostly larger animals and leopard takes smaller ones. This is called resource partitioning. It is a mechanism in which there is the division of limited resources by species to help avoid competition in an ecological niche. In any environment, organisms compete for limited resources, so organisms and different species have to find ways to coexist with one another. That is why lions predate mostly larger animals and leopards take smaller ones.

Topic: Biology, Organisms and Populations, NEET, NEET 2019 (Odisha)
Carotenoids are

Options:
A glycoproteins
B hydrocarbons
C polysaccharides
D lipoproteins

The correct answer is:
hydrocarbons

Solution:
Carotenoids are the plant pigments that are responsible for imparting bright red, yellow and orange color in the plants. These are water-insoluble pigments, unsaturated molecules built up of isoprene units and are related to phytol structurally.

Topic: Biology, Photosynthesis in Higher Plants, NEET
Cartilages are made up of:

Options:
A Calcium phosphate
B Sodium chloride
C Chondroitin sulphate
D Chondroitin

The correct answer is:
Chondroitin sulphate

Solution:
Bone and cartilage are specialised connective tissues. The former has a very hard matrix due to calcium salts in it and the latter has slightly pliable matrix due to chondroitin salts.

Topic: Biology, Structural Organisation in Animals, NEET
Case: A lady is 15 weeks pregnant. Various tests confirm that if her child was born, it would suffer from a serious illness leading to a serious handicap. What is the best-suggested option to this case as per the Medical Termination of Pregnancy (Amendment) Act, 2017?

Options:
A MTP can't be performed
B MTP can be easily performed without any restrictions
C MTP can be performed only if two registered medical practitioners agree to it
D MTP can be performed only after determination of sex of the baby

The correct answer is:
MTP can be easily performed without any restrictions

Solution:
According to The Medical Termination of Pregnancy (Amendment) Act, 2017:
(a) MTP can be done within the first 12 weeks of pregnancy on the opinion of one registered medical practitioner.
(b) MTP can be done between 12–24 weeks of pregnancy on the opinion of two registered medical practitioners.
MTP can be performed when the continuation of pregnancy:
(I) would involve a risk to the life of the pregnant woman or
(II) There is a substantial risk to the child

Topic: Biology, Reproductive Health, NEET
Casparian strips are found on?

Options:
A Tangential wall of endodermal cells
B Radial wall of endodermal cells
C Both A) and B)
D None of the above

The correct answer is:
Both A) and B)

Solution:
The tangential and radial walls of the endodermal cells have a deposition of water-impermeable, waxy material suberin in the form of casparian strips.

Topic: Biology, Anatomy of Flowering Plants, NEET
Casparian strips occur in:

Options:
A Cortex
B Pericycle
C Epidermis
D Endodermis

The correct answer is:
Endodermis

Solution:
The casparian strip is a band of cell wall material deposited in the radial and transverse walls of the endodermis and is chemically different made up of suberin, an impermeable substance which forces water and dissolved minerals to pass through the semipermeable plasma membrane of these cells, rather than their cell walls.

Topic: Biology, Anatomy of Flowering Plants, NEET, NEET 2018
Castor is a _______ seed.

Options:
A Monocot and endospermic
B Dicot and albuminous
C Dicot and perispermic
D Monocot and Albuminous

The correct answer is:
Dicot and albuminous

Solution:
Castor is a dicotyledonous plant hence seeds contain two cotyledons.
Castor possesses endosperm. Hence it is called albuminous or endospermic seed.
Hence, Castor seeds are Dicot and Endospermic (Albuminous).

Topic: Biology, Morphology of Flowering Plants, NEET
Catalase enzyme of peroxisomes degrades

Options:
A water into H+,e- and oxygen
B hydrogen peroxide into water and oxygen.
C hydrogen peroxide into HCO and O2 .
D H2O+O2 form hydrogen peroxide.

The correct answer is:
hydrogen peroxide into water and oxygen.

Solution:
Hydrogen peroxide is toxic to the cell, and when its concentration increases, the peroxisomes produce catalase enzyme that breaks hydrogen peroxide into water and oxygen.

Topic: Biology, Cell - The Unit of Life, NEET
Catalytic activity is _________ when __________ is removed from the enzyme which testifies that they play crucial role in the catalytic activity of the enzyme.

Options:
A Lost, Co-factor
B Intensified, Co-factor
C Lost, Inhibitor
D both a and c

The correct answer is:
Lost, Co-factor

Solution:
Enzymes are proteinaceous in nature. Some Enzymes also contain non-protein part known as Co-factors. These factors are attached to the Enzymes to enhanced their catalytic activity. The protein part of Enzyme is known as Apoenzyme. Hence Apoenzyme (Protein part) + Co-factors (Non protein part) = Holoenzyme (Whole Enzyme). As the co-factors are bound to enzymes, the removal of these factors affects the overall activity of Enzymes too.

Topic: Chemistry, Biomolecules, NEET
Catalytic converter in vehicle is used for controlling:

Options:
A Air pollution
B Water pollution
C Radioactive pollution
D Soil pollution

The correct answer is:
Air pollution

Solution:
The emission of exhaust from automobiles which causes air pollution can be reduced by devices such as positive crank case ventilation value and catalytic converter.

Topic: Biology, Environmental Issues, NEET
Catalytic properties are found in:

Options:
A Proteins & Lipids
B RNA & DNA
C RNA & Proteins
D DNA & Proteins

The correct answer is:
RNA & Proteins

Solution:
Substances that show catalytic property act as biocatalysts. This means these catalytic substances can enhance the speed of reaction. This is performed by enzymes and hence they are known as biocatalysts. Many enzymes are protein However some enzymes known as ribozymes contain RNA also. Thus RNA and protein have catalytic properties.

Topic: Chemistry, Biomolecules, NEET
Catching, processing or selling of fish, shellfish or other aquatic animals is known as

Options:
A Pisciculture
B Sericulture
C Apiculture
D Lac culture

The correct answer is:
Pisciculture

Solution:
Pisciculture is the rearing and induced breeding of fish by man in pond tanks and artificial reservoirs. Fisheries has an important place in Indian economy. It provides income and employment to millions of fishermen and farmers. A large number of our population is dependent on fishes like catla, rohu, common carp, hilsa, sardines, mackerel, pomfrets etc., and other aquatic animals such as prawn, crab, lobster, edible oyster, etc., for food and its products.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
Categorise the following substances Lime water, Human blood, gastric juice

Options:
A Basic, neutral, acidic
B Acidic, basic , neutral
C Neutral, basic, acidic
D Acidic, neutral, basic

The correct answer is:
Basic, neutral, acidic

Solution:
Correct Option is : 1
Basic, neutral, acidic

Topic: Chemistry, Ionic Equilibrium, NEET
Cattle and goat refrain from feeding on the weed Calotropis because

Options:
A It has thorns which causes injuries to them.
B It doesn't have enough nutrients to feed them.
C It produces highly poisonous cardiac glycosides.
D It produces a toxin which causes paralysis in them.

The correct answer is:
It produces highly poisonous cardiac glycosides.

Solution:
Calotropis or milkweed is a poisonous weed that grows in Asia. It is called milkweed as it produces a milky exudate rich in cardiac glycosides. They increase the heart rate and force of contraction of the heart and cause death. They also have an unpleasant taste. Hence, cattle and goat do not feed on Calotropis.

Topic: Biology, Organisms and Populations, NEET
Causative agents of sleeping sickness and malaria are included respectively in which classes of protozoa?

Options:
A Flagellated and amoeboid protozoa
B Ciliated protozoa and sporozoa
C Flagellated protozoa and sporozoa
D Amoeboid and ciliated protozoa

The correct answer is:
Flagellated protozoa and sporozoa

Solution:
Sleeping sickness disease is caused by Trypanosoma which is included in class flagellated protozoa. Malaria disease is caused by Plasmodium which is included in class sporozoan. All members of this class are parasite and these are devoid of locomotory organs.

Topic: Biology, Biological Classification, NEET
Cause of extinction of stellar's sea cow of Russia and passenger pigeon is

Options:
A over-exploitation by humans
B alien species invasion
C habitat loss and fragmentation
D co-extinction

The correct answer is:
over-exploitation by humans

Solution:
Steller's sea cow is an extinct sirenian described by Georg Wilhelm Steller in 1741. At that time, it was found only around the Commander Islands in the Bering Sea between Alaska and Russia. The passenger pigeon or wild pigeon is an extinct species of pigeon that was endemic to North America. Its common name is derived from the French word passenger, meaning 'passing by', due to the migratory habits of the species. These two species became extinct in the last 500 years due to over-exploitation and consumption by humans.

Topic: Biology, Biodiversity and its Conservation, NEET