datavorous/entrance-exam-dataset huggingface dataset:
Which one of the following statements about the zeolite is false?

Options:
A They are used as cation exchangers
B They have open structure which enables them to take up small molecules
C Zeolites are aluminosilicates having three dimensional network
D Some at the $\mathrm{SiO}_4^{4-}$ units are replaced by $\mathrm{AlO}_4^{5-}$ and $\mathrm{AlO}_6^{9-}$ ions in zeolites

The correct answer is:
Some at the $\mathrm{SiO}_4^{4-}$ units are replaced by $\mathrm{AlO}_4^{5-}$ and $\mathrm{AlO}_6^{9-}$ ions in zeolites

Solution:
The zeolites are noted for their ability towards ion-exchange and reversible dehydration. They have a framework structure that encloses interconnected cavities occupied by large metal cations (positively charged ions) and water molecules.
Related Theory
Zeolite are hydrated aluminosilicate minerals that contain alkali and alkaline-earth metals. They have a honeycomb-like structure, which makes them shape-selective catalysts. They have an extended 3D-network of silicates in which some silicon atoms are replaced by aluminium atoms giving Al-O-Si framework.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET, NEET 2004
Which one of the following statements about viruses is correct?

Options:
A viruses possess their own metabolic system
B all viruses contain both RNA and DNA
C viruses are obligate parasites
D nucleic acid of viruses is known as capsid

The correct answer is:
viruses are obligate parasites

Solution:
Viruses consist of a protein coat known as capsid which encloses a single type of nucleic acid, either RNA or DNA. They do not have enzymes for protein synthesis. They require living host cell for multiplication, while they take over the machinery of the host cell. Thus, viruses are obligatory intercellular parasites.
Related Theory
Viruses can infect all cellular life forms, but each cellular species can be infected by own limited specific range of viruses. Most viruses that harm animals can not harm humans.

Topic: Biology, Biological Classification, NEET, NEET 2003
Which one of the following statements about viruses is correct?

Options:
A Viruses possess their own metabolic system
B Viruses contain either DNA or RNA
C Viruses are facultative parasites
D Viruses are readily killed by antibiotics

The correct answer is:
Viruses contain either DNA or RNA

Solution:
Viruses are connecting links between the living and non-living, as they lack cellular organization; hence, metabolic activity is absent. Viruses are obligate parasites as they cannot survive outside living host cells and possess either DNA or RNA but never both. Viruses are not affected by antibiotics.

Topic: Biology, Biological Classification, NEET
Which one of the following statements correctly explains how leaching is carried out in the case of low-grade copper ores?

Options:
A The ore is heated in a blast furnace.
B The ore is crushed and then subjected to a series of flotation processes.
C The finely ground ore is treated with a suitable reagent like acid in a series of tanks or vats.
D The ore is subjected to roasting followed by smelting in a reverberatory furnace.

The correct answer is:
The finely ground ore is treated with a suitable reagent like acid in a series of tanks or vats.

Solution:
Correct Option is : (C)
The finely ground ore is treated with a suitable reagent like acid in a series of tanks or vats.

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
Which one of the following statements correctly explains why copper matte is put in a silica lined converter?

Options:
A To increase the temperature of the matte.
B To provide a controlled environment for the conversion process.
C To prevent the reaction between matte and the converter lining.
D To facilitate the separation of impurities from the matte.

The correct answer is:
To prevent the reaction between matte and the converter lining.

Solution:
Correct Option is : (C)
To prevent the reaction between matte and the converter lining.

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
Which one of the following statements for the order of a reaction is incorrect?

Options:
A Order is not influenced by stoichiometric coefficient of the reactants
B Order of reaction is sum of power to the concentration terms of reactants to express the rate of reaction
C Order of reaction is always whole number
D Order can be determined only experimentally

The correct answer is:
Order of reaction is always whole number

Solution:
Order of reaction may be zero, whole number or fraction number.

Topic: Chemistry, Chemical Kinetics, NEET, NEET 2011 (Screening)
Which one of the following statements in regard to the excretion by the human kidneys is correct?

Options:
A Descending limb of Loop of Henle is impermeable to water
B Distal convoluted tubule is incapable of reabsorbing $\mathrm{HCO}_3$
C Nearly 99 per cent of the glomerular filtrate is reabsorbed by the renal tubules
D Ascending limb of loop of Henle is impermeable to electrolytes

The correct answer is:
Nearly 99 per cent of the glomerular filtrate is reabsorbed by the renal tubules

Solution:
The plasma fluid that filters out from glomerular capillaries into Bowman's capsule of nephron is called glomerular filtrate. A comparison of the volume of the filtrate formed per day $(180 \mathrm{~L} /$ day) with that of the urine released $(1.5 \mathrm{~L})$, suggests that nearly 99 per cent of the filtrate has to be reabsorbed by the renal tubules. This process is called reabsorption.

Topic: Biology, Excretory Products and their Elimination, NEET, NEET 2010 (Screening)
Which one of the following statements is CORRECT?

Options:
A Nicotine causes hallucinations
B Heroin is a diacetylmorphine
C Hashish has stimulant property
D Cocaine is opioid drug

The correct answer is:
Heroin is a diacetylmorphine

Solution:
Heroin, also known as diamorphine among other names, is an opioid most commonly used as a recreational drug for its euphoric effects. Medically it is used in several countries to relieve pain or in opioid replacement therapy.

Topic: Biology, Human Health and Diseases, NEET
Which one of the following statements is correct?

Options:
A In tomato, the fruit is a capsule.
B The seeds of orchids have an oil-rich endosperm.
C The placentation in Primrose is basal.
D The flower of tulip is a modified shoot.

The correct answer is:
The flower of tulip is a modified shoot.

Solution:
Tulips are most popular and wildly grown flowers. Tulips are bulbs, possessing modified stems and leaves.

Topic: Biology, Morphology of Flowering Plants, NEET
Which one of the following statements is correct?

Options:
A The seed in grasses is not endospermic.
B Mango is a parthenocarpic fruit.
C A proteinaceous aleurone layer is present in maize grain.
D A sterile pistil is called a staminode.

The correct answer is:
A proteinaceous aleurone layer is present in maize grain.

Solution:
The seeds in grasses are endospermic and massive endosperm stores food which provides nutrition to embryo during germination. The outermost proteinaceous layer of endosperm is called as aleurone layer which is present in maize grain and other members of Poaceae family. Sterile stamen is called as staminode. Mango is a true fruit which develops from monocarpellary ovary and has single seed.

Topic: Biology, Morphology of Flowering Plants, NEET
Which one of the following statements is correct?

Options:
A The seed in grasses is not endospermic.
B Mango is a parthenocarpic fruit.
C A proteinaceous aleurone layer is present in maize grain.
D A sterile pistil is called a staminode.

The correct answer is:
A proteinaceous aleurone layer is present in maize grain.

Solution:
In monocotyledonous endospermic seeds, the endosperm is surrounded by proteinaceous one-cell thick layer, called the aleurone layer. The cells of aleurone layer are filled with proteinaceous aleurone grains which play an important role at the time of germination.

Topic: Biology, Morphology of Flowering Plants, NEET
Which one of the following statements is correct?

Options:
A Patients, who had undergone surgery are given cannabinoids to relieve pain
B Benign tumours show the property of metastasis
C Heroin accelerates body functions
D Malignant tumours may exhibit metastasis

The correct answer is:
Malignant tumours may exhibit metastasis

Solution:
Malignant tumour first grows slowly. No symptoms are noticed. This stage is called the latent stage. The tumour later grows quickly. The cancer cells go beyond adjacent tissue and enter the blood and lymph. Once this happens, they migrate to many other sites in the body, where the cancer cells continue to divide. It is metastasis. Only malignant tumours are properly designated as cancer.

Topic: Biology, Human Health and Diseases, NEET
Which one of the following statements is correct?

Options:
A Both Azotobacter and Rhizobium fix atmospheric nitrogen in root nodules of plants.
B Cyanobacteria such as Anabaena and Nostoc are important mobilizers of phosphates and for plant nutrition in soil
C At present it is not possible to grow maize without chemical fertilizers
D Extensive use of chemical fertilizers may lead to eutrophication of nearby water bodies.

The correct answer is:
Extensive use of chemical fertilizers may lead to eutrophication of nearby water bodies.

Solution:
Rhizobium fix nitrogen in root nodules of legumes, while Azotobacter is a free-living nitrogen-fixing bacterium. Anabaena and Nostoc are not mobilisers of phosphates. Anabaena is a filamentous cyanobacteria, involved in nitrogen fixation. Extensive use of chemical fertilizers may lead to eutrophication of nearby waterbodies.
Related Theory
Eutrophication or more precisely hypertrophication, refers to enrichment of $a$ water body with nutrients, usually with an excess amount of nutrients. This process induces growth of plants and algae and, due to the biomass load, may result in oxygen depletion of the water body. For example, algal bloom.

Topic: Biology, Biological Classification, NEET, NEET 2007
Which one of the following statements is correct?

Options:
A Patients, who had undergone surgery are given cannabinoids to relieve pain
B Benign tumours show the property of metastasis
C Heroin accelerates body functions
D Malignant tumours may exhibit metastasis

The correct answer is:
Malignant tumours may exhibit metastasis

Solution:
Malignant tumour first grows slowly. No symptoms are noticed. This stage is called the latent stage. The tumour later grows quickly. The cancer cells go beyond adjacent tissue and enter the blood and lymph. Once this happens, they migrate to many other sites in the body, where the cancer cells continue to divide. It is metasis. Only malignant tumours are properly designated as cancer.

Topic: Biology, Human Health and Diseases, NEET, NEET 2009 (Screening)
Which one of the following statements is correct?

Options:
A Seeds of orchids have oil-rich endosperm
B Placentation in primrose is basal
C Flower of tulip is a modified shoot
D In tomato, fruit is a capsule

The correct answer is:
Flower of tulip is a modified shoot

Solution:
Flower is highly condensed and modified shoot meant for sexual reproduction (Dr. Goethe; 1790 ). During the course of evolution, the nodes of the axis of shoot came in contact so, that internodes got reduced, and leaves got modified and specialized to form floral leaves.

Topic: Biology, Morphology of Flowering Plants, NEET, NEET 2011 (Screening)
Which one of the following statements is correct?

Options:
A The seed in grasses is not endospermic.
B Mango is a parthenocarpic fruit.
C A proteinaceous aleurone layer is present in maize grain.
D A sterile pistil is called a staminode.

The correct answer is:
A proteinaceous aleurone layer is present in maize grain.

Solution:
In monocotyledonous endospermic seeds, the endosperm is surrounded by proteinaceous one-cell thick layer, called the aleurone layer. The cells of aleurone layer are filled with proteinaceous aleurone grains which play an important role at the time of germination.

Topic: Biology, Morphology of Flowering Plants, NEET, NEET 2014
Which one of the following statements is correct?

Options:
A The tricuspid and the bicuspid valves open due to the pressure exerted by the simultaneous contraction of the atria
B Blood moves freely from atrium to the ventricle during joint diastole
C Increased ventricular pressure causes closing of the semilunar valves
D The atrio-ventricular node (AVN) generates an action potential to stimulate atrial contraction

The correct answer is:
Blood moves freely from atrium to the ventricle during joint diastole

Solution:
Contraction of heart chambers is called systole and
relaxation is called diastole. Atria and ventricles contract alternately.

Right atrium receives deoxygenated blood and left atrium receives oxygenated blood. When both the atria are completely filled with blood, pressure is exerted on the wall due to which SA node gets excited and generates cardiac impulse. This leads to atrial systole. During atrial systole, blood is pumped into ventricles.

The opening between the right atrium and the right ventricle is guarded by the tricuspid valve, whereas a bicuspid valve guards the opening between the left atrium and the left ventricle.

So, during atrial systole, the bicuspid and tricuspid valves are open, and the pulmonary/aortic semilunar valves are closed.

Topic: Biology, Body Fluids and Circulation, NEET, NEET 2022 (Phase 1)
Which one of the following statements is correct?

Options:
A Mg plays roles in neuromuscular function and interneuronal transmission.
B The daily requirement of Mg and Ca in the human body is estimated to be 0.2-0.3 g.
C All enzymes that utilise ATP in phosphate transfer require Ca as the cofactor.
D The bone in human body is an inert and unchanging substance.

The correct answer is:
The daily requirement of Mg and Ca in the human body is estimated to be 0.2-0.3 g.

Solution:
An adult body contains about 25 g of Mg and 1200 g of Ca compared with only 5 g of iron and 0.06g of copper. The daily requirement in the human body has been estimated to be 200 – 300 mg

Topic: Chemistry, s Block Elements, NEET, NEET 2023 (All India)
Which one of the following statements is correct about Phycomycetes?

Options:
A The mycelium is aseptate and coenocytic.
B A zygospore is formed by fusion of two gametes.
C Rhizopus and Albugo are examples of them.
D All of these

The correct answer is:
All of these

Solution:
In the members of Phycomycetes, the mycelium is aseptate and coenocytic. Asexual reproduction takes place by zoospores (motile) or by aplanospores (non-motile). These spores are endogenously produced in the sporangium. A zygospore is formed by the fusion of two gametes. These gametes are similar in morphology (isogamous) or dissimilar (anisogamous or oogamous). Some common examples are Mucor, Rhizopus (the bread mould mentioned earlier), and Albugo (the parasitic fungi on mustard).

Topic: Biology, Biological Classification, NEET
Which one of the following statements is correct regarding blood pressure?

Options:
A

90/110 mmHg may harm vital organs like brain and kidney

B

105/50 mmHg makes one very active

C

100/55 mmHg is considered an ideal blood pressure

D

150/90 mmHg is considered high and required treatment

The correct answer is:

150/90 mmHg is considered high and required treatment

Solution:
Normal blood pressure in human is 120/80 mm Hg. 80mm Hg is the diastolic or resting pressure and 120 mm Hg is the systolic or pumping pressure. 140/90 mm Hg is high pressure than normal and requires treatment. Otherwise it may affect vital organ like kidney and brain. It is called hypertension.

Topic: Biology, Body Fluids and Circulation, NEET
Which one of the following statements is correct regarding blood pressure?

Options:
A $100 / 55 \mathrm{mmHg}$ is considered an ideal blood pressure
B $105 / 50 \mathrm{mmHg}$ makes one very active
C $190 / 110 \mathrm{mmHg}$ may harm vital organs like brain and kidney
D $130 / 90 \mathrm{mmHg}$ is considered high and requires treatment

The correct answer is:
$190 / 110 \mathrm{mmHg}$ may harm vital organs like brain and kidney

Solution:
Hypertension is the term for blood pressure that is higher than normal $(120 / 80)$. In this measurement, $120 \mathrm{~mm} \mathrm{Hg}$ (millimeter) of mercury pressure) is the systolic, or pumping, pressure and $80 \mathrm{~mm} \mathrm{Hg}$ is the diastolic, or resting pressure. If repeated checks of blood pressure $190 / 100 \mathrm{~mm} \mathrm{Hg}$ ) of an individual is $140 / 90$ (140 over 90) or higher, it shows hypertension. High blood pressure leads to heart diseases and also affects vital organs like brain and kidney.

Topic: Biology, Body Fluids and Circulation, NEET, NEET 2011 (Screening)
Which one of the following statements is correct regarding blood pressure?

Options:
A 130/90 mm Hg is considered high and requires treatment
B 100/55 mm Hg is considered an ideal blood pressure
C 105/50 mm Hg makes one very active
D 190/110 mm Hg may harm vital organs like brain and kidney

The correct answer is:
190/110 mm Hg may harm vital organs like brain and kidney

Solution:
Hypertension is the term for blood pressure that is higher than normal (120/80). In this measurement 120 mm Hg (millimeters of mercury pressure) is the systolic, or pumping, pressure, and 80 mm Hg is the diastolic, or resting, pressure. If repeated checks of blood pressure of an individual are 140/90 (140 over 90) or higher, it shows hypertension. High blood pressure leads to heart diseases and also affects vital organs like the brain and kidney.

Topic: Biology, Body Fluids and Circulation, NEET
Which one of the following statements is correct regarding cleavage?

Options:
A Cleavage division brings about a considerable increase in the mass of protoplasm.
B It is a type of meiotic division.
C With each cleavage division, the resultant blastomeres increases in size.
D Cleavage division in morula leads to the development of blastula.

The correct answer is:
Cleavage division in morula leads to the development of blastula.

Solution:
The embryo with 8 to 16 blastomeres is called a morula. The morula continues to divide and transforms into blastocyst as it moves further into the uterus.

Topic: Biology, Human Reproduction, NEET
Which one of the following statements is correct regarding sexually transmitted discases (STDs)?

Options:
A A person may contact syphilis by sharing milk with one already suffering from the disease.
B Haemophilia is one of the STDs.
C Genital herpes and sickle-cell anaemia are both STDs.
D The chances of a 5-years boy contacting a SID are very little.

The correct answer is:
The chances of a 5-years boy contacting a SID are very little.

Solution:
The chances of a 5 years boy contacting STD are very little. However, it is not impossible entirely, as STD does not only spread through sexual contact. It spreads through body fluids. A person cannot contact STD by sharing milk with infected person, as STD does not spread by a mere touch. However, risk of infection increases when the noninfected person comes in contact with sores on the body of infected person. Haemophilia is not a STD, but X-linked recessive disease. Sickle cell anaemia is autosomal recessive disorder.
Related Theory
Reproductive health is a state of complete physical, mental and social well-being and not merely the absence of disease relating to the reproductive system and its functions and process, while Reproductive fitness is the individual's reproductive success (equal to average contribution to gene pool).

Topic: Biology, Reproductive Health, NEET, NEET 2013 (Karnataka)
Which one of the following statements is correct when SO2 is passed through acidified K2Cr2O7 solution?

Options:
A The solution turns blue.
B The solution is decolourized.
C SO2 is reduced.
D Green Cr2SO43 is formed.

The correct answer is:
Green Cr2SO43 is formed.

Solution:
K2Cr2O7+SO2+H2SO4âK2SO4 +Cr2SO43+Green H2O
Green Cr2SO43 is formed.

Topic: Chemistry, d and f Block Elements, NEET, NEET 2016 (Phase 1)
Which one of the following statements is correct, with reference to enzymes?

Options:
A Apoenzyme = Holoenzyme + Coenzyme
B Holoenzyme = Apoenzyme + Coenzyme
C Coenzyme = Apoenzyme + Holoenzyme
D Holoenzyme = Coenzyme + Co-factor

The correct answer is:
Holoenzyme = Apoenzyme + Coenzyme

Solution:
The holoenzyme is a conjugated enzyme in which protein part is apoenzyme while non-protein is a cofactor.
Coenzyme is also organic compounds but their association with apoenzyme is only transient and serve as cofactors.

Topic: Biology, Biomolecules (B), NEET, NEET 2017
Which one of the following statements is correct with respect to AIDS?

Options:
A The HIV can be transmitted through eating food together with an infected person
B Drug addicts are least susceptible to HIV infection
C AIDS patients are being fully cured cent per cent with proper care and nutrition
D The causative HIV retrovirus enters helper T-lymphocytes thus reducing their numbers

The correct answer is:
The causative HIV retrovirus enters helper T-lymphocytes thus reducing their numbers

Solution:
AIDS (Acquired Immuno Deficiency Syndrome) is a viral disease of immune system. It is caused by virus Human Immunodeficiency Virus (HIV). In AIDS patients, the virus homes on $\mathrm{CD}_4+$ T-cells (helper T-lymphocytes), infecting and killing them until none are left. Without their crucial immune system cells, the body cannot mount a defence against invading bacteria or viruses. AIDS patient die off infections that a healthy person could fought off.

Topic: Biology, Human Health and Diseases, NEET, NEET 2010 (Screening)
Which one of the following statements is correct with respect to kidney function regulation?

Options:
A Exposure to cold temperature stimulates $\mathrm{ADH}$ release
B An increase in glomerular blood flow stimulates formation of angiotensin II
C During summer when body loses lot of water by evaporation, the release of $\mathrm{ADH}$ is suppressed
D When someone drinks lot of water $\mathrm{ADH}$ release is suppressed

The correct answer is:
When someone drinks lot of water $\mathrm{ADH}$ release is suppressed

Solution:
When someone drinks lot of water which is not required by body, the osmorality of the blood will decrease. The decrease in osmorality will inhibit the release of $\mathrm{ADH}$.

Topic: Biology, Chemical Coordination and Integration, NEET, NEET 2011 (Screening)
Which one of the following statements is correct with respect to kidney function regulation?

Options:
A

During summer when body loses lot of water by evaporation, the release of ADH is suppressed.

B

When someone drinks lot of water, ADH release is suppressed.

C

Exposure to cold temperature blood flow stimulates formation of Angiotensin II.

D

An increase in glomerular blood flow stimulates formation of Angiotensin II.

The correct answer is:

When someone drinks lot of water, ADH release is suppressed.

Solution:
When some one drinks lots of water, kidney release of ADH is suppressed.

Topic: Biology, Excretory Products and their Elimination, NEET
Which one of the following statements is false?

Options:
A R and S configurations correspond to the enantiomers of an optically active compound
B The process of converting an optically active compound into a racemate is called racemization
C A molecule containing a plane of symmetry can be optically active
D Optical isomers that are not enantiomers are called diastereoisomers

The correct answer is:
A molecule containing a plane of symmetry can be optically active

Solution:
R-S- configuration is related to the enantiomers, which are optically active. â´true
(ii) The mtextxing of two optically-active compounds d and l-type in equimolar quantity is called racemtextzation â´true
(iii) A molecule containing plane of symmetry does not show optical - activity.
Hence, the given statement is false.
(iv) Optical isomers that are not enantiomers are called diastereoisomers (is true).
(v) All chiral objects are asymmetric (true)
â´ A molecule containing a plane of symmetry can be optically active is the correct answer.

Topic: Chemistry, General Organic Chemistry, NEET