datavorous/entrance-exam-dataset huggingface dataset:
Which of the following statements are correct?

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

The correct answer is:
(i),(ii),(iii),(iv) are correct

Solution:
Correct Option is : 4
(i),(ii),(iii),(iv) are correct

Topic: Chemistry, Chemical Equilibrium, NEET
Which of the following statements are false?

I. Most cells are tiny and their volume ranges from 1 to 1000 nm3.

II. Some cells have microvilli to increase the absorptive surface area.

III. All cells arise from pre-existing cells.

IV. In plants, translocation of sucrose is performed by xylem vessels and tracheids.

V. According to cell theory, all cells arise from abiotic material.

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

The correct answer is:
I, IV and V are false

Solution:
In plants, translocation of sucrose is performed by phloem vessels and tracheids. According to cell theory, all cells arise from pre-existing living cells. Eukaryotic cells normally range between 1â100Âµm in diameter and prokaryotic cell size ranges from 0.1-5Âµm in diameter.

Topic: Biology, Cell - The Unit of Life, NEET
Which of the following statements are false regarding 'Hershey and Chase' experiment, proving DNA is genetic material?

(i) They made use of rats.
(ii) Radioactivity was seen in supernatant for the medium that was infected by phage radiolabeled with 32P.
(iii) Used radioisotope to label sulphur with 35S in sulphur-containing amino acids.
(iv) Radioactive phages were allowed to attach to E. coli bacteria.

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

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

Solution:
Martha Chase and Alfred D.Harshey conducted an experiment that proved DNA is the genetic material that is inherited. In their experiment they used radioactive isotope of Sulfur 35S and Phosphorus 32P containing bacteriophage T2 (dsDNA) to infect a bacterium, Escherichia coli and found that the phosphorus-containing DNA of the viral particle, not the sulfur-containing protein of the viral coat, enters the host cell and serves the genetic information for viral replication. To conduct the experiment, the bacteriophage and bacteria was blended and constituents were separated by density gradient centrifugation.

Topic: Biology, Molecular Basis of Inheritance, NEET
Which of the following statements are false/true?

A. Calcitonin regulates the metabolism of calcium.
B. Oxytocin stimulates contraction of uterine muscles during birth.
C. Grave's disease is caused by malfunctioning of the adrenal gland.
D. ADH stimulates the absorption of water and increases urine production.

Options:
A A, B and C are true; D only false
B A only true; B, C and D are false
C A and D are false; B and C are true
D A and B are true; C and D are false

The correct answer is:
A and B are true; C and D are false

Solution:
Calcitonin is a hormone released by thyroid gland that regulates calcium and phosphate metabolism in blood. Parturition is the process of child birth where the uterine muscles contract to force the baby out of the mothers womb. Uterine contraction is stimulated by the hormone oxytocin which is released by the posterior pituitary.
Vasopressin or anti-diuretic hormone (ADH) is released by the posterior pituitary that stimulated water reabsorption in the DCT and collecting duct of the nephron, thereby, increasing the concentration of urine. This hormone prevents dehydration and reduces urine production.
Grave's disease (hyperthyroidism, overactive thyroid) is an autoimmune disorder believed to be caused due to genetic and environmental factors.

Topic: Biology, Chemical Coordination and Integration, NEET
Which of the following statements are incorrect?

1. The longest phase of the menstrual cycle is the follicular phase while the shortest phase is the ovulatory phase.
2. When blastulation occurs, the uterus is the luteal phase with a well-developed endometrium
3. The formation of the haploid second polar body occurs just before ovulation.
4. Permanent cessation of menses is an indication of pregnancy.

Options:
A 1, 2, 3 and 4
B 3 and 4
C 1, 3 and 4
D 2, 1 and 4

The correct answer is:
1, 3 and 4

Solution:
The longest phase of menstrual cycle is luteal phase (around 13 - 14 days) while the shortest phase is ovulatory phase (around 1 day). The formation of haploid second polar body occurs just after ovulation within the fallopian tube once the sperm touches the ocum. Permanent cessation of menses is menopause. In preganancy menses stops temporarily and is regained after delivery of the child. Blastulation occurs within 4-5 days after fertilization. Fertilization aoccurs within two days after ovulation. So blastulation occurs within 7 days from ovulation when the uterus is still in the luteal phase

Topic: Biology, Human Reproduction, NEET
Which of the following statements are INCORRECT?

A. All the transition metals except scandium form MO oxides which are ionic.
B. The highest oxidation number corresponding to the group number in transition metal oxides is attained in Sc2O3 to Mn2O7 .
C. Basic character increases from V2O3 to V2O4 to V2O5.
D. V2O4 dissolves in acids to give VO4-3 salts.
E. CrO is basic but Cr2O3 is amphoteric.

Choose the correct answer from the options given below:

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

The correct answer is:
C and D only

Solution:
Lower oxidation state oxides are ionic. The highest oxidation number in the oxides, coincides with the group number and is attained in Sc2O3 to Mn2O7. The structure of V2O5 is more covalent than that of V2O3 and V2O4, which makes it more acidic. As a result, the basicity of V2O5 is greater than that of V2O4, which is in turn greater than that of V2O3.

Here in option C they have gien the increasing order of acidic character. So Option C is wrong.

V2O4 dissolves in acids to give VO2+ not in VO4-3 salts. So Option D is also wrong. Lower oxides are basic oxides and all chromium oxides other than CrO are amphoteric oxides.

Topic: Chemistry, d and f Block Elements, NEET, NEET 2023 (All India)
Which of the following statements are incorrect about phenol formaldehyde resin?

Options:
A Novolac or resol is a linear polymer and is used in the manufacture of adhesive
B Bakelite is a cross linked polymer and is used in making switches and plugs
C Novolac is prepared when (P/F) (phenol/formaldehyde) ratio if greater than 1, whereas bakelite is prepared when (P/F) ratio is less than 1
D Novolac is prepared when P/F < 1, and bakelite is prepared when P/F > 1

The correct answer is:
Novolac is prepared when P/F < 1, and bakelite is prepared when P/F > 1

Solution:
Novolac is prepared when P/F < 1, and bakelite is prepared when P/F > 1.

Topic: Chemistry, Polymers, NEET
Which of the following statements are incorrect?

I. A rapid decline in the death rate is the only reason for the population explosion.
II. The marriageable age decided by the government is 18 years for females and 21 years for males.
III. An ideal contraceptive is the one that reduces the sexual drive of the user.
IV. The 'one child norm' has mostly been adopted by people living in rural areas.

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

The correct answer is:
I, III and IV

Solution:
I. A rapid decline in death rate along with the decline in Infant mortality rate(IMR) and maternal mortality rate (MMR) are reasons for population explosion.
III. An ideal contraceptive should not interfere with the sexual drive, sexual desire, or sexual act of the user.
IV. The 'one child norm' has mostly been adopted by young, working people living in urban areas.

Topic: Biology, Reproductive Health, NEET
Which of the following statements are NOT correct?

A. Hydrogen is used to reduce heavy metal oxides to metals.
B. Heavy water is used to study reaction mechanism.
C. Hydrogen is used to make saturated fats from oils.
D. The H-H bond dissociation enthalpy is lowest as compared to a single bond between two atoms of any element.
E. Hydrogen reduces oxides of metals that are more active than iron.

Choose the most appropriate answer from the options given below:

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

The correct answer is:
D, E only

Solution:
Hydrogen reduces some metal ions in aqueous solution and oxides of metals (less active than iron) into corresponding metals.

Heavy water is extensively used as a moderator in nuclear reactors and in exchange reactions for the study of reaction mechanisms.

Dihydrogen is used in the manufacture of vanaspati fat by the hydrogenation of polyunsaturated vegetable oils like soyabean, cotton seeds etc.

Dihydrogen is relatively inert at room temperature due to the high H–H bond enthalpy. Thus, the atomic hydrogen is produced at a high temperature in an electric arc or under ultraviolet radiations.

Topic: Chemistry, Hydrogen, NEET, NEET 2023 (All India)
Which of the following statements are not true for cancer cells in relation to mutations?

Options:
A Mutations in proto - oncogenes accelerate the cell cycle
B Mutations destroy telomerase inhibitor
C Mutations inactivate the cell control
D Mutations inhibit production of telomerase

The correct answer is:
Mutations inhibit production of telomerase

Solution:
Cancer will be caused by increased telomerase activity making the cancerous cells immortal and not by inhibition of telomerase production.

Topic: Biology, Human Health and Diseases, NEET, NEET 2016 (Phase 1)
Which of the following statements are true?

1. Gross Primary Productivity is always greater than Net Primary Productivity.

2. Gross Primary Productivity plus the respiration losses give us Net Primary Productivity.

3. The rate of respiration of plants affects the Net Primary Productivity.

4. Net Primary Productivity + Gross Primary Productivity = Respiratory loss.

Options:
A 1 âTrue ; 2 âFalse ; 3 âTrue ; 4 âFalse
B 1Â âTrueÂ ;Â 2Â âTrueÂ ;Â 3Â âFalseÂ ;Â 4Â âFalse
C 1Â âFalseÂ ;Â 2Â âFalseÂ ;Â 3Â âTrueÂ ;Â 4Â âFalse
D 1Â âTrueÂ ;Â 2Â âTrueÂ ;Â 3Â âTrueÂ ;Â 4Â âFalse

The correct answer is:
1 âTrue ; 2 âFalse ; 3 âTrue ; 4 âFalse

Solution:
The rate at which the organic matter is produced by photosynthesis is called gross primary productivity. Plants make use of a substantial amount of GPP in respiration. The available biomass for consumption by heterotrophs is called as net primary productivity. So, respiratory losses minus the GPP will give the NPP. GPP â R = NPP . Therefore NPP can never be greater than GPP.

Topic: Biology, Ecosystem, NEET
Which of the following statements are true for spermatogenesis but do not hold true for Oogenesis?

(a) It results in the formation of haploid gametes

(b) Differentiation of gamete occurs after the completion of meiosis

(c) Meiosis occurs continuously in a mitotically dividing stem cell population

(d) It is controlled by the Luteinising hormone (LH) and Follicle Stimulating Hormone (FSH) secreted by the anterior pituitary

(e) It is initiated at puberty

Choose the most appropriate answer from the options given below:

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

The correct answer is:
(c) and (e) only

Solution:
Following features of spermatogenesis are not applicable on the oogenesis:

Meiosis occurs continuously in a mitotically dividing stem cell population.

In case of oogenesis, gamete formation is held at meiosis-I till puberty and then held at meiosis-II till fertilization of ovum by sperm.

Oogenesis is initiated during embryonic development while spermatogenesis is initiated at puberty.

So, statements c and e are not applicable to the oogenesis.

Topic: Biology, Human Reproduction, NEET, NEET 2022 (Phase 1)
Which of the following statements are true.

(i) In the structure of HNO 3, the NâO bond (121 pm) is shorter than the NâOH bond (140 pm).

(ii) All the PâCl bonds in PCl 5 are not equivalent.

(iii) IâCl is more reactive than I 2 .

Options:
A

(i) and (ii)

B

(ii) and (iii)

C

(i) and (iii)

D

(i),(ii) and (iii)

The correct answer is:

(i),(ii) and (iii)

Solution:
(i) N−O bond is shorter than N−OH bond in HNO 3 molecule. It can be understood with the help of resonating structures of HNO 3 molecule.

As we can see from the resonating structures, there is double bond character between N−O bonds but there is always single bond character between N−OH bond. This is because of no pi-bonding occurring between nitrogen and oxygen of −OH group.
Double bond is shorter than single bond. So N−O bond is shorter than N−OH bond in HNO 3 molecule.
(ii) There are two bonds in PCl 5 . One is equatorial and other is axial, because of the repulsion factor one is longer and the other shorter.
(iii) I−Cl bond is weaker than I−I bond

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
Which of the following statements are true.

(i) L a 3+ â(Z=57)ââandââL u 3+ â(Z=71) do not show any colour in solutions.

(ii) Among the divalent cations in the first series of transition elements, manganese exhibits the maximum paramagnetism.

Options:
A

(i),(ii)

B

(ii)

C

(i)

D

None of these

The correct answer is:

(i),(ii)

Solution:
(i) Colour of lanthanoids ions may be attributed due to the presence of f-electrons. La3+ ion do not show any colour, because of empty f-orbital. Lu3+ ion do not show any colour, because of completely field f-orbitals.

(ii) Since M n 2+ (Z=25)=3 d 5 ,4 s 0 has maximum number of unpaired electrons.therefore Mn2+ exhibit maximum paramagnetism.

Topic: Chemistry, d and f Block Elements, NEET
Which of the following statements are true regarding the hypothalamus?

Options:
A It is situated at the base of rhombencephalon.
B It has centres for breathing and respiration.
C It has centres which control body temperature, urge for eating and drinking.
D It is connected to the posterior pituitary with hypothalamo-hypophyseal portal system.

The correct answer is:
It has centres which control body temperature, urge for eating and drinking.

Solution:
The hypothalamus has centres which control body temperature and the urge for eating and drinking. It is a part of forebrain and diencephalon. It is connected to the anterior pituitary with hypothalamo-hypophyseal portal system. The centres for breathing and respiration are present in pons and medulla.

Topic: Biology, Chemical Coordination and Integration, NEET
Which of the following statements are true?

Options:
A In animal cells during S phase DNA replication begins in nucleus and centriole duplication in cytoplasm
B During G1 phase protein are synthesized and cell continues to grow
C All cells in adult animals appear to exhibit cell division
D All are true

The correct answer is:
In animal cells during S phase DNA replication begins in nucleus and centriole duplication in cytoplasm

Solution:
During the G2 phase protein is synthesized and the cell continues to grow. Some cells for example the heart cells in adult animals do not appear to exhibit cell division.

Topic: Biology, Cell Cycle and Cell Division, NEET
Which of the following statements are true/false

I. Calcitonin regulates the metabolism of calcium.

II. Oxytocin stimulates contraction of uterine muscles during birth.

III. Grave's disease is caused by malfunctioning of adrenal gland.

IV. ADH stimulates absorption of water and increase the urine production.

Options:
A I and III are true; II and IV are false
B I and II are true; III and IV are false
C I and IV are false; II and IV are true
D I, II and III are true; IV only false

The correct answer is:
I and II are true; III and IV are false

Solution:
Grave's disease is caused by excess secretion of thyroid hormone.
ADH increases the reabsorption of water in the distal convoluted tubule, collecting ducts of the nephrons of the kidneys.

Topic: Biology, Chemical Coordination and Integration, NEET
Which of the following statements are true/false?

i. Thyrocalcitonin regulates the homeostasis of blood calcium levels.
ii. Oxytocin stimulates contraction of uterine muscles during birth.
iii. "Grave's disease" is caused by malfunctioning of the adrenal gland.
iv. ADH stimulates the absorption of water and increase urine production.

Options:
A i and iii are true ; ii and iv are false
B i and ii are true; iii and iv are false
C i and iv are false, ii and iii are true
D i, ii, iii, are true iv only false

The correct answer is:
i and ii are true; iii and iv are false

Solution:
Graves' disease is an immune system disorder that results in the overproduction of thyroid hormones (hyperthyroidism). The hypothalamus sends a message to the pituitary gland which releases ADH. This travels in the blood to kidneys and affects the tubules so more water is reabsorbed into your blood. As a result, a smaller volume of more concentrated urine is produced. ADH reduces the amount of urine production.

Topic: Biology, Chemical Coordination and Integration, NEET
Which of the following statements are/is true for fungi?

a. The branch of science which deals with the study of fungi is termed as mycetology.
b. Nutrition is heterotrophic and non-absorptive.
c. The cell-wall contains cellulose, lignocellulose and chitin.

Options:
A a and c
B b only
C a only
D a and d

The correct answer is:
a only

Solution:
The branch of science which deals with the study of fungi is termed as mycology or mycetology. Fungi is achlorophyllous and saprophytic in nature. Nutrition is heterotrophic and absorptive with the cell-wall containing cellulose and chitin.

Topic: Biology, Biological Classification, NEET
Which of the following statements best describes redox reactions on the basis of electron transfer, along with suitable examples?

Options:
A Redox reactions involve the transfer of protons, not electrons, between reactants, as seen in the reaction of hydrochloric acid and sodium hydroxide.
B Redox reactions involve the transfer of electrons between reactants, with one substance losing electrons (oxidation) and another gaining electrons (reduction), such as the reaction of hydrogen and oxygen to form water.
C Redox reactions involve the transfer of electrons between reactants, with both substances losing electrons, as seen in the combustion of gasoline in an engine.
D Redox reactions involve the transfer of neutrons, not electrons, between reactants, as observed in the reaction of carbon dioxide and water.

The correct answer is:
Redox reactions involve the transfer of electrons between reactants, with one substance losing electrons (oxidation) and another gaining electrons (reduction), such as the reaction of hydrogen and oxygen to form water.

Solution:
Correct Option is : (B)
Redox reactions involve the transfer of electrons between reactants, with one substance losing electrons (oxidation) and another gaining electrons (reduction), such as the reaction of hydrogen and oxygen to form water.

Topic: Chemistry, Redox Reactions, NEET
Which of the following statements best describes the structure of the epidermis in plants?

Options:
A The epidermis is composed of elongated cells that are tightly packed together in a discontinuous layer.
B The epidermis is made up of loose, fluffy cells that form multiple layers.
C The epidermis is composed of cells with a large amount of cytoplasm and a small vacuole.
D The epidermis is made up of cells with a small amount of cytoplasm and a large vacuole.

The correct answer is:
The epidermis is made up of cells with a small amount of cytoplasm and a large vacuole.

Solution:
The epidermis is described as being made up of elongated cells that are tightly packed together in a single layer and the epidermal cells are parenchymatous with a small amount of cytoplasm lining the cell wall and a large vacuole. So, option D is correct.

Topic: Biology, Anatomy of Flowering Plants, NEET
Which of the following statements best explains why all compounds of alkali metals are easily soluble in water but lithium compounds are more soluble in organic solvents?

Options:
A Alkali metals have larger atomic sizes, leading to stronger interactions with water molecules.
B Lithium ions have a smaller ionic radius, making them more soluble in organic solvents.
C Alkali metals have higher electronegativities, favoring solubility in polar solvents like water.
D Lithium compounds possess stronger ionic bonds, necessitating organic solvents for dissolution.

The correct answer is:
Lithium ions have a smaller ionic radius, making them more soluble in organic solvents.

Solution:
Correct Option is : (B)
Lithium ions have a smaller ionic radius, making them more soluble in organic solvents.

Topic: Chemistry, s Block Elements, NEET
Which of the following statements best explains why all the C—O bonds in the carbonate ion (CO32–) are equal in length?

Options:
A Resonance delocalizes the electrons, making all bonds equal in length.
B Electronegativity differences between C and O atoms lead to equal bond lengths.
C Ionic bonding causes all C—O bonds to have the same length.
D Steric hindrance results in equal bond lengths.

The correct answer is:
Resonance delocalizes the electrons, making all bonds equal in length.

Solution:
Correct Option is : (A)
Resonance delocalizes the electrons, making all bonds equal in length.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
Which of the following statements best explains why the temperature of gas in a cylinder rises when it is compressed by pushing in a piston?

Options:
A The compression increases the kinetic energy of gas molecules.
B The piston friction generates heat during compression.
C Gas pressure causes a chemical reaction that produces heat.
D The compression reduces the volume, leading to a temperature increase.

The correct answer is:
The compression reduces the volume, leading to a temperature increase.

Solution:
Correct Option is : (D)
The compression reduces the volume, leading to a temperature increase.

Topic: Chemistry, Kinetic Theory of Gases, NEET
Which of the following statements correctly describes the industrial importance of osmosis?

Options:
A Movement of water from soil into plant roots
B Preservation of meat by adding salt
C Preservation of fruits by adding sugar
D Use of reverse osmosis for water desalination

The correct answer is:
Use of reverse osmosis for water desalination

Solution:
Correct Option is : (D)
Use of reverse osmosis for water desalination

Topic: Chemistry, Solutions, NEET
Which of the following statements correctly describes the physical significance of the universal gas constant (R)?

Options:
A The value of R depends on the type of gas being considered.
B R represents the ratio of pressure, volume, and temperature for any gas.
C R is measured in units of Pascal per mole, cubic meter per Kelvin, and joule per mole per Kelvin.
D R is a constant value that changes with different units of measurement.

The correct answer is:
R is measured in units of Pascal per mole, cubic meter per Kelvin, and joule per mole per Kelvin.

Solution:
Correct Option is : (C)
R is measured in units of Pascal per mole, cubic meter per Kelvin, and joule per mole per Kelvin.

Topic: Chemistry, States of Matter, NEET
Which of the following statements correctly describes the relationship between the total vapor pressure (p) and the mole fraction of components in the solution for a binary solution of CHCl3(l) and CH2Cl2?

Options:
A p = p1+ x1p10+ x2p20
B p = x1p10+ (1 - x1)p20
C p = (p10- p20)x1+ p20
D p = p10+ p20

The correct answer is:
p = x1p10+ (1 - x1)p20

Solution:
Correct Option is : (B)
p = x1p10+ (1 - x1)p20

Topic: Chemistry, Solutions, NEET