datavorous/entrance-exam-dataset huggingface dataset:
What makes RNA mutate at a faster rate than DNA?

Options:
A RNA being unstable
B RNA being a catalyst
C DNA being double stranded
D RNA having a shorter life span

The correct answer is:
RNA being unstable

Solution:
RNA mutates at a faster rate than DNA due to its instability and faster life span.

Topic: Biology, Molecular Basis of Inheritance, NEET
What makes silicones biocompatible, and how are they used in the medical field?

Options:
A They contain oxygen atoms, and they are used as antibiotics
B They contain polar groups, and they are used for cleaning wounds
C They are surrounded by non-polar alkyl groups, and they are used in surgical and cosmetic plants
D They are highly reactive, and they are used for chemical sterilization

The correct answer is:
They are surrounded by non-polar alkyl groups, and they are used in surgical and cosmetic plants

Solution:
Silicones are biocompatible because they are surrounded by non-polar alkyl groups, and they are used in surgical and cosmetic plants.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
What makes the actinoids different from the lanthanoids in terms of oxidation states?

Options:
A Actinoids have more stable oxidation states
B Actinoids have fewer stable oxidation states
C Actinoids have only one stable oxidation state
D Actinoids have no stable oxidation states

The correct answer is:
Actinoids have fewer stable oxidation states

Solution:
The actinoids have a wide range of oxidation states, which is different from the lanthanoids that have only one stable oxidation state.

Topic: Chemistry, d and f Block Elements, NEET
What makes the d orbitals of transition elements more influenced by their surroundings compared to s and p orbitals?

Options:
A Their higher energy levels
B Their lower energy levels
C Their protrusion to the periphery of an atom
D Their inability to form bonds

The correct answer is:
Their protrusion to the periphery of an atom

Solution:
The d orbitals of transition elements protrude to the periphery of an atom more than the other orbitals, making them more influenced by the surroundings.

Topic: Chemistry, d and f Block Elements, NEET
What makes the matrix of bones hard in the human body?

Options:
A Calcium salts
B Chondroitin salts
C Glucose
D Fats

The correct answer is:
Calcium salts

Solution:
The matrix of bones in the human body is hard due to the presence of calcium salts. This makes bones strong enough to support the weight of the body and protect delicate organs.

Topic: Biology, Locomotion and Movement, NEET
What makes the Monarch butterfly distasteful to its predator (bird)?

Options:
A By being cryptically:coloured (camouflaged)
B By having a special chemical present in its body
C By producing and storing poisonous chemicals
D By using thorns as a means of defence

The correct answer is:
By having a special chemical present in its body

Solution:
The Monarch butterfly is highly distasteful to its predator (bird) because of a special chemical present in its body, which it acquires during its caterpillar stage by feeding on a poisonous weed.

Topic: Biology, Organisms and Populations, NEET
What makes up the brain stem?

Options:
A Mid brain, pons and medulla oblongata
B Forebrain, midbrain and hindbrain
C Hypothalamus, thalamus and pons
D Limbic lobe, hypothalamus and thalamus

The correct answer is:
Mid brain, pons and medulla oblongata

Solution:
Three major regions make up the brain stem; mid brain, pons and medulla oblongata.

Topic: Biology, Neural Control and Coordination, NEET
What makes up the mass of the nucleus in an atom?

Options:
A Electrons
B Neutrons and protons
C Neutrons only
D Protons only

The correct answer is:
Neutrons and protons

Solution:
The mass of the nucleus in an atom is due to the presence of both neutrons and protons.

Topic: Chemistry, Structure of Atom, NEET
What makes water 'hard'?

Options:
A Presence of dissolved gases
B Presence of calcium and magnesium salts
C High mineral content
D Low pH

The correct answer is:
Presence of calcium and magnesium salts

Solution:
Water is considered 'hard' due to the presence of calcium and magnesium salts in the form of hydrogencarbonate, chloride, and sulfate.

Topic: Chemistry, Hydrogen, NEET
What makes white phosphorus less stable and more reactive than the other solid phases?

Options:
A Its high density
B The presence of angular strain in the P4
molecule
C Its insolubility in water
D Its high melting point

The correct answer is:
The presence of angular strain in the P4
molecule

Solution:
The paragraph mentions that white phosphorus is less stable and more reactive due to the presence of angular strain in the P4 molecule, where the angles are only 60°.

Topic: Chemistry, p Block Elements (Group 15, 16, 17 & 18), NEET
What map unit (Centimorgan) is adopted in the construction of genetic maps?

Options:
A A unit of distance between two expressed genes, representing 10% cross over.
B A unit of distance between two expressed genes, representing 100% cross over.
C A unit of distance between genes on chromosomes, representing 1% cross over.
D A unit of distance between genes on chromosomes, representing 50% cross over.

The correct answer is:
A unit of distance between genes on chromosomes, representing 1% cross over.

Solution:
1 map unit or centimorgan is equivalent to 1% recombination between two genes. If was Sturtevant who first suggest that frequency of recombination can be used to depict relative distance between the genes. 10% crossing over is known as Morgan (M)

Topic: Biology, Principles of Inheritance and Variation, NEET, NEET 2019 (All India)
What marked the beginning of the real revolution in antibacterial therapy?

Options:
A The discovery of sulpha drugs
B The development of synthetic antibiotics
C The discovery of azodyes
D The discovery of the antibacterial properties of Penicillium

The correct answer is:
The discovery of the antibacterial properties of Penicillium

Solution:
The real revolution in antibacterial therapy began with the discovery of the antibacterial properties of a Penicillium fungus by Alexander Fleming.

Topic: Chemistry, Chemistry in Everyday Life, NEET
What mass of 95% pure CaCO3 will be required to neutralise 50 mL of 0.5 M HCl solution according to the following reaction?

CaCO3s+2HClaq→CaCl2aq+CO2g+2H2Ol

[Calculate upto second place of decimal point]

Options:
A 1.32 g
B 3.65 g
C 9.50 g
D 1.25 g

The correct answer is:
1.32 g

Solution:
\(\underset{(s)}{\mathrm{CaCO}_3}+\underset{50 \mathrm{~mL}, 0.5 \mathrm{M}}{2 \mathrm{HCl}(\mathrm{aq})} \longrightarrow \underset{(\mathrm{aq})}{\mathrm{CaCl}_2}+\underset{(g)}{\mathrm{CO}_2}+\underset{(l)}{2 \mathrm{H}_2 \mathrm{O}}\)
the number of moles of HCl taken \(=0.5 \times 0.05\)
\(=0.025\) moles
As we can see that from the above balanced equation is one mole of \(\mathrm{CaCO}_3(s)\) requires 2 moles of \(\mathrm{HCl}(\mathrm{aq})\) therefore, for 0.025 moles of \(\mathrm{HCl}(\mathrm{aq}), 0.0125\) moles of \(\mathrm{CaCO}_3(s)\) will be required.
Mass of 0.0125 moles of \(\mathrm{CaCO}_3(s)=0.0125 \times\) molar mass of \(\mathrm{CaCO}_3\)
\(\begin{aligned}
& =0.0125 \times 100 \\
& =1.25 \mathrm{~g}
\end{aligned}\)
But purity of \(\mathrm{CaCO}_3(s)\) is \(95 \%\). Therefore, the actual amount of \(\mathrm{CaCO}_3(s)\) required is
Percentage purity \(=\frac{\text { weight of pure substance }}{\text { weight of impure sample }} \times 100\)
\(95=\frac{1.25}{\text { weight of impure sample }} \times 100\)
weight of impure sample \(=\frac{1.25 \times 100}{95}\)
\(=1.32 \mathrm{~g}\)
Hence. option 1 is correct.

Topic: Chemistry, Some Basic Concepts of Chemistry, NEET, NEET 2022 (Phase 1)
What mass of AgI will dissolve in 0.1 L of 1.0 M NH3? Neglect change in conc. of NH3 .
(Atomtextc weight of Ag & I are 108 amu and 127 amu respectively)

Given : K sp AgI = 1.5 × 1 0 - 1 6 ( mol/L ) 2 ; K f Ag NH 3 2 + = 1.6 × 1 0 7.

Options:
A 4.9 × 1 0 - 5 g
B 0.0056 g
C 0.035 g
D 0.00115 g

The correct answer is:
0.00115 g

Solution:
Due to higher value of Kf , mostly Ag+ converted into complex.
AgI s â Ag + aq. + I - aq. ; K sp
Ag + aq. + 2 NH 3 aq. â Ag NH 3 2 + aq. ; K f
______________________________________
overal reaction is
AgI s + 2 NH 3 aq. â Ag NH 3 2 + aq. + I - aq.
K eq = K sp Â· K f
K sp Â· K f = x 2 1 2
â´ x = 4.9 Ã 1 0 - 5 mol/litre
So, mass of AgI required is
= 4.9 Ã 1 0 - 5 Ã 2 3 5 = 0.0115 g/L
In 0.1 L, mass of AgI dissolved will be=0.011510 g=1.15Ã10-3 g

Topic: Chemistry, Ionic Equilibrium, NEET
What mass of CaCO3 is required to react completely with 25 ml of 0.75 M HCl according to the reaction CaCO3s+2HClaq→CaCl2aq+CO2g+H2Ol

Options:
A 1 g
B 0.3 g
C 0.8 g
D 0.93 g

The correct answer is:
0.93 g

Solution:
Given
CaCO 3 (s)â+â2HCl(aq)â CaCl 2 (aq)â+â CO 2 (g)â+â H 2 O(l)
Moles present in 25âml of 0.75âMâHCl= 0.75 1000 Ã25
=0.01875 moles
Since 2 moles react completely with CaCO 3 â=â100âg
0.01875 moles react completely with CaCO 3  =  100 2  × 0.01875
=0.9375 g

Topic: Chemistry, Some Basic Concepts of Chemistry, NEET
What mass of hydrochloric acid is needed to decompose 50 g of limestone?

Options:
A 36.5 g
B 73 g
C 18.25 g
D 91.25 g

The correct answer is:
36.5 g

Solution:
CaCO3100g+2HCl2×36.5=73g→CaCl2+H2O+CO2
As 100 g of CaCO3 requires 73 g of HCl
So 50 g of CaCO3 requires =73100×50=36.5 g of HCl

Topic: Chemistry, Some Basic Concepts of Chemistry, NEET
What mass of hydrogen peroxide will be present in 2 litres of a 5 molar solution? Calculate the mass of oxygen which will be liberated by the decomposition of 200 mL of this solution.

Options:
A 34 g of H2O2; 16 g of O2
B 100 g of H2O2; 12.5 g of O2
C 80 g of H2O2; 10 g of O2
D 110 g of H2O2; 13.7 g of O2

The correct answer is:
34 g of H2O2; 16 g of O2

Solution:
Correct Option is : (A)
34 g of H2O2; 16 g of O2

Topic: Chemistry, Hydrogen, NEET
What mass of N2H4 can be oxidised to N2 by 24.0 g K2CrO4 , which is reduced to Cr(OH)4- (Given: Molar mass of K 2 CrO 4  = 194.2 )

Options:
A 9.97 g
B 2.97 g
C 3.97 g
D 4.97 g

The correct answer is:
2.97 g

Solution:
N22-â¶N20+ 4e
Cr6++ 3e â¶Cr3+
Meq. of N2H4 = Meq. of K2CrO4
w 32/4Ã 1000 =24194.2/3Ã1000 E. wt =M wt.valence factor
w N 2 H 4 = 2.97 g

Topic: Chemistry, Redox Reactions, NEET
What mass of sodium chloride would be decomposed by 9.8 g of sulphuric acid if 12 g of sodium bisulphate and 2.75 g of hydrogen chloride were produced in a reaction?

Options:
A 14.75 g
B 3.8 g
C 5.85 g
D 2.2 g

The correct answer is:
5.85 g

Solution:
NaClx+H2SO49.8g→NaHSO412g+HCl3.65g
x+9.8=12+3.65
x=5.85g

Topic: Chemistry, Some Basic Concepts of Chemistry, NEET
What material are the anodes made of in the copper refining process?

Options:
A Pure copper
B Impure copper
C Copper sulphate
D Copper oxide

The correct answer is:
Impure copper

Solution:
The anodes used in the electrolytic refining of copper are made of impure copper.

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
What material are the cell walls of diatoms made of?

Options:
A Silica
B Cellulose
C Chitin
D Proteins

The correct answer is:
Silica

Solution:
The cell walls of diatoms are embedded with silica, making them indestructible.

Topic: Biology, Biological Classification, NEET
What material is commonly used to make semipermeable membranes for reverse osmosis?

Options:
A Cellulose acetate
B PVC
C Nylon
D Polyethylene

The correct answer is:
Cellulose acetate

Solution:
Correct Option is : (A)
Cellulose acetate

Topic: Chemistry, Solutions, NEET
What material is typically used for the bulb of a thermometer that allows for the free transfer of heat?

Options:
A Adiabatic
B Diathermic
C Isolating
D Insulating

The correct answer is:
Diathermic

Solution:
Correct Option is : (B)
Diathermic

Topic: Chemistry, Thermal Properties of Matter, NEET
What materials are classified as semiconductors, and why are they important electronic materials?

Options:
A Materials with zero resistivity, due to their high conductivity
B Materials with low resistivity, due to their high conductivity
C Materials with conductivity between conductors and insulators, important for electronics
D Materials with high resistivity, due to their insulating properties

The correct answer is:
Materials with conductivity between conductors and insulators, important for electronics

Solution:
Semiconductors are materials with conductivity between conductors and insulators and are important electronic materials.

Topic: Chemistry, Electrochemistry, NEET
What materials can be made from aluminum and its alloys?

Options:
A Only pipes and rods
B Only plates and foils
C Pipes, tubes, rods, wires, plates, and foils
D Only utensils and packing materials

The correct answer is:
Pipes, tubes, rods, wires, plates, and foils

Solution:
Aluminum and its alloys can be given shapes of pipe, tubes, rods, wires, plates, or foils.

Topic: Chemistry, p Block Elements (Group 13 & 14), NEET
What materials can Spirulina be grown on?

Options:
A Meat
B Fruits and vegetables
C Waste water, straw, molasses, animal manure, and sewage
D Only soil

The correct answer is:
Waste water, straw, molasses, animal manure, and sewage

Solution:
Spirulina can be grown on materials like waste water from potato processing plants (containing starch), straw, molasses, animal manure, and even sewage.

Topic: Biology, Strategies for Enhancement in Food Production, NEET
What materials did organic compounds appear in?

Options:
A Metals and alloys
B Gases and liquids
C Clothing, fuels, polymers, dyes, and medicines
D Minerals and rocks

The correct answer is:
Clothing, fuels, polymers, dyes, and medicines

Solution:
Organic compounds appear in materials like clothing, fuels, polymers, dyes, and medicines.

Topic: Chemistry, General Organic Chemistry, NEET
What materials make up the anode and cathode of a dry cell?

Options:
A Zinc and carbon
B Copper and aluminum
C Iron and nickel
D Silver and gold

The correct answer is:
Zinc and carbon

Solution:
The anode of a dry cell is a zinc container, and the cathode is a carbon (graphite) rod.

Topic: Chemistry, Electrochemistry, NEET
What materials make up the anode and cathode of a mercury cell?

Options:
A Zinc and carbon
B Copper and aluminum
C Zinc and mercury amalgam
D Gold and platinum

The correct answer is:
Zinc and mercury amalgam

Solution:
A mercury cell consists of zinc-mercury amalgam as the anode and a paste of HgO and carbon as the cathode.

Topic: Chemistry, Electrochemistry, NEET
What mathematical relationship between pressure and temperature is described by Gay Lussac's law?

Options:
A Inverse relationship
B Direct relationship
C No relationship
D Exponential relationship

The correct answer is:
Direct relationship

Solution:
Gay Lussac's law states that at constant volume, the pressure of a fixed amount of gas varies directly with the temperature, indicating a direct relationship between pressure and temperature.

Topic: Chemistry, States of Matter, NEET
What may be the stable oxidation state of the transition element with the following d electron configurations in the ground state of their atoms : 3d3,3d5,3d8and 3d4respectively?

Options:
A +3, +2, +6, +4
B +2, +3, +4, +5
C +5, +2, +5,+6
D +3, +2, +5, +4

The correct answer is:
+5, +2, +5,+6

Solution:
Correct Option is : (C)
+5, +2, +5,+6

Topic: Chemistry, d and f Block Elements, NEET
What may drugs with common structural features have in common?

Options:
A The same color
B The same taste
C The same mechanism of action on targets
D The same source of origin

The correct answer is:
The same mechanism of action on targets

Solution:
Drugs possessing some common structural features may have the same mechanism of action on targets.

Topic: Chemistry, Chemistry in Everyday Life, NEET
What may happen to amorphous solids at some temperature?

Options:
A They may become transparent.
B They may melt abruptly.
C They may become crystalline.
D They may lose their shape.

The correct answer is:
They may become crystalline.

Solution:
Amorphous solids may become crystalline at some temperature, as mentioned in the paragraph.

Topic: Chemistry, Solid State, NEET
What may happen when physical adsorption occurs at low temperatures?

Options:
A It may become spontaneous.
B It may pass into chemisorption.
C It may become endothermic.
D It may become irreversible.

The correct answer is:
It may pass into chemisorption.

Solution:
The paragraph states that physical adsorption at low temperature may pass into chemisorption as the temperature is increased.

Topic: Chemistry, Surface Chemistry, NEET
What may occur if different molecules are adsorbed side by side on the catalyst's surface?

Options:
A Desorption of reaction products
B Formation of new molecules through a reaction
C Diffusion of reaction products away from the surface
D Decomposition of the catalyst

The correct answer is:
Formation of new molecules through a reaction

Solution:
The paragraph suggests that if different molecules are adsorbed side by side on the catalyst's surface, they may react with each other resulting in the formation of new molecules.

Topic: Chemistry, Surface Chemistry, NEET
What measures are particularly essential for preventing the spread of infectious diseases transmitted through food and water?

Options:
A Keeping the body clean
B Consuming clean food and water
C Avoiding close contact with infected persons
D Spraying insecticides in ditches, drainage areas and swamps

The correct answer is:
Consuming clean food and water

Solution:
Measures such as consuming clean drinking water, food, vegetables, and fruits are particularly essential for preventing the spread of infectious diseases transmitted through food and water such as typhoid, amoebiasis, and ascariasis.

Topic: Biology, Human Health and Diseases, NEET
What measures one has to take to prevent contracting STDs?

Options:
A Blood transfusion from an infected person or drug abuser must be avoided
B Sharing surgical instruments and injections needles must be totally avoided
C Having sexual intercourse with an unknown person or multiple partners must be avoided
D All of the above

The correct answer is:
All of the above

Solution:
Blood transfusion from an infected person or drug abuser must be avoided. Sharing surgical instruments and injections needles must be totally avoided Having sexual intercourse with an unknown person or multiple partners must be avoided are some preventive measures you should take to avoid STDs.

Topic: Biology, Reproductive Health, NEET
What measures should be taken for personal hygiene to prevent the spread of infectious diseases?

Options:
A Avoid close contact with infected persons
B Consume clean food and water
C Dispose of waste and excreta properly
D Spray insecticides in ditches, drainage areas and swamps

The correct answer is:
Consume clean food and water

Solution:
Personal hygiene measures include keeping the body clean and consuming clean drinking water, food, vegetables, and fruits to prevent the spread of infectious diseases.

Topic: Biology, Human Health and Diseases, NEET
What mechanism acts as a check on the Renin-Angiotensin mechanism?

Options:
A Aldosterone mechanism
B Angiotensin mechanism
C Atrial Natriuretic Factor (ANF) mechanism
D Renin mechanism

The correct answer is:
Atrial Natriuretic Factor (ANF) mechanism

Solution:
An increase in blood flow to the atria of the heart can cause the release of ANF, which can cause vasodilation and decrease blood pressure, acting as a check on the Renin-Angiotensin mechanism.

Topic: Biology, Excretory Products and their Elimination, NEET
What medicine did Paul Ehrlich develop for the treatment of syphilis?

Options:
A Prontosil
B Salvarsan
C Sulphanilamide
D Arsphenamine

The correct answer is:
Salvarsan

Solution:
Paul Ehrlich developed the medicine arsphenamine, known as salvarsan, for the treatment of syphilis.

Topic: Chemistry, Chemistry in Everyday Life, NEET
What metal catalyzes the oxidation of ethyne to ethanal in the Wacker process?

Options:
A Palladium (Pd)
B Nickel (Ni)
C Chromium (Cr)
D Titanium (Ti)

The correct answer is:
Palladium (Pd)

Solution:
In the Wacker process the oxidation of ethyne to ethanal is catalysed by PdCl2 .

Topic: Chemistry, d and f Block Elements, NEET
What metals can the van Arkel method effectively refine by removing oxygen and nitrogen impurities?

Options:
A Zinc and Copper
B Zirconium and Titanium
C Iron and Nickel
D Aluminum and Magnesium

The correct answer is:
Zirconium and Titanium

Solution:
The van Arkel method is specifically useful for removing oxygen and nitrogen impurities from metals like Zirconium (Zr) and Titanium (Ti).

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
What method did Aristotle use to classify plants?

Options:
A DNA analysis
B Simple morphological characters
C Soil analysis
D Climate data

The correct answer is:
Simple morphological characters

Solution:
Aristotle used simple morphological characters to classify plants into different groups. This means he used physical characteristics such as the shape and size of the plant to classify it as a tree, shrub or herb.

Topic: Biology, Biological Classification, NEET
What method involves both dispersion and condensation in the preparation of colloidal sols?

Options:
A Coagulation method
B Bredig’s Arc method
C Centrifugation method
D Dialysis method

The correct answer is:
Bredig’s Arc method

Solution:
The Bredig’s Arc method involves both dispersion and condensation in the preparation of colloidal sols.

Topic: Chemistry, Surface Chemistry, NEET
What method involves heating the ore in the presence of air below the metal's melting point?

Options:
A Roasting
B Calcination
C Reduction
D Smelting

The correct answer is:
Roasting

Solution:
Roasting refers to the process of heating the ore in the presence of air below the metal's melting point.

Topic: Chemistry, General Principles and Processes of Isolation of Metals, NEET
What method is employed to prepare alkyl bromide?

Options:
A Heating alcohols with sodium or potassium iodide in orthophosphoric acid.
B Heating alcohols with sulfuric acid and bromine.
C Heating alcohols with phosphorus tribromide.
D Heating alcohols with concentrated HBr (48%).

The correct answer is:
Heating alcohols with concentrated HBr (48%).

Solution:
Constant boiling with HBr (48%) is used for preparing alkyl bromide.

Topic: Chemistry, Haloalkanes and Haloarenes, NEET
What method is used for estimation of halogens, sulphur and phosphorus present in an organic compound?

Options:
A Steam distillation
B Kjeldahl method
C Dumas method
D Carius method

The correct answer is:
Carius method

Solution:
Correct Option is : (D)
Carius method

Topic: Chemistry, General Organic Chemistry, NEET
What method is used to overcome the difficulty of obtaining molecular orbitals directly from the Schrödinger wave equation?

Options:
A The uncertainty principle
B The LCAO method
C The Pauli exclusion principle
D The Heisenberg equation

The correct answer is:
The LCAO method

Solution:
To overcome the problem of obtaining molecular orbitals directly, the LCAO (linear combination of atomic orbitals) method is adopted.

Topic: Chemistry, Chemical Bonding and Molecular Structure, NEET
What method of classification is based on the chemical constituents of the plant?

Options:
A Cytotaxonomy
B Numerical Taxonomy
C Phylogenetic Classification
D Chemotaxonomy

The correct answer is:
Chemotaxonomy

Solution:
Chemotaxonomy is a method of classification that uses the chemical constituents of the plant, such as alkaloids, flavonoids, and terpenoids, to classify organisms. This method is based on the idea that organisms with similar chemical characteristics are more closely related.

Topic: Biology, Plant Kingdom, NEET
What method of classification uses information from many sources, including fossils, to classify organisms?

Options:
A Cytotaxonomy
B Numerical Taxonomy
C Phylogenetic Classification
D Chemotaxonomy

The correct answer is:
Phylogenetic Classification

Solution:
Phylogenetic classification systems use evolutionary relationships between organisms as the basis for classification. This method utilizes information from multiple sources, including fossils, to classify organisms into taxa that share a common ancestor.

Topic: Biology, Plant Kingdom, NEET