Q1
CHEMISTRY
Unit 4: Chemical Thermodynamics
For the reaction, 2Cl(g) → Cl2(g), the correct option is:
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2020 (7 sets)
- A. ΔrH < 0 and ΔrS < 0
- B. ΔrH > 0 and ΔrS > 0
- C. ΔrH > 0 and ΔrS < 0
- D. ΔrH < 0 and ΔrS > 0
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Q2
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
Which of the following set of molecules will have zero dipole moment?
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2020 (7 sets)
- A. Boron trifluoride, beryllium difluoride, carbon dioxide, 1,4-dichlorobenzene
- B. Ammonia, beryllium difluoride, water, 1,4-dichlorobenzene
- C. Boron trifluoride, hydrogen fluoride, carbon dioxide, 1,3-dichlorobenzene
- D. Nitrogen trifluoride, beryllium difluoride, water, 1,3-dichlorobenzene
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Q3
CHEMISTRY
Unit 4: Chemical Thermodynamics
The correct option for free expansion of an ideal gas under adiabatic condition is:
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2020 (7 sets)
- A. q > 0, ΔT > 0 and w > 0
- B. q = 0, ΔT = 0 and w = 0
- C. q = 0, ΔT < 0 and w > 0
- D. q < 0, ΔT = 0 and w = 0
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Q4
CHEMISTRY
Unit 2: Atomic Structure
Identify a molecule which does not exist.
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- A. O2
- B. He2
- C. Li2
- D. C2
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Q5
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
Match the following and identify the correct option.
(a) CO + H2
(b) Temporary hardness of water
(c) B2H6
(d) H2O2
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2020 (1 set)
- A. (a) Synthesis gas, (b) Mg(HCO3)2/Ca(HCO3)2, (c) electron deficient hydride, (d) non-planar structure
- B. (a) Synthesis gas, (b) Mg(HCO3)2/Ca(HCO3)2, (c) electron deficient hydride, (d) non-planar structure
- C. (a) Synthesis gas, (b) electron deficient hydride, (c) Mg(HCO3)2/Ca(HCO3)2, (d) non-planar structure
- D. (a) Synthesis gas, (b) non-planar structure, (c) electron deficient hydride, (d) Mg(HCO3)2/Ca(HCO3)2
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Q6
CHEMISTRY
Unit 11: d- and f-Block Elements
Identify the correct statement from the following:
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- A. Pig iron can be moulded into a variety of shapes.
- B. Wrought iron is impure iron with 4% carbon.
- C. Blister copper has blistered appearance due to evolution of CO2.
- D. Vapour phase refining is carried out for Nickel by Van Arkel method.
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Q6
CHEMISTRY
Unit 11: d- and f-Block Elements
Identify the correct statement from the following:
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2020 (7 sets)
- A. Pig iron can be moulded into a variety of shapes.
- B. Wrought iron is impure iron with 4% carbon.
- C. Blister copper has blistered appearance due to evolution of CO2.
- D. Vapour phase refining is carried out for nickel by Van Arkel method.
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Q7
CHEMISTRY
Unit 5: Solutions
The freezing point depression constant (Kf) of benzene is 5.12 K kg mol−1. The freezing point depression for the solution of molality 0.078 m containing a non-electrolyte solute in benzene is (rounded off upto two decimal places):
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- A. 0.60 K
- B. 0.20 K
- C. 0.80 K
- D. 0.40 K
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Q7
CHEMISTRY
Unit 5: Solutions
The freezing point depression constant (Kf) of benzene is 5.12 K kg mol−1. The freezing point depression for the solution of molality 0.078 m containing a non-electrolyte solute in benzene is (rounded off up to two decimal places):
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- A. 0.60 K
- B. 0.20 K
- C. 0.80 K
- D. 0.40 K
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Q8
CHEMISTRY
Unit 10: p-Block Elements
Match the following:
Oxide — Nature
(a) CO
(b) BaO
(c) Al2O3
(d) Cl2O7
Which of the following is the correct option?
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- A. (a) Neutral, (b) Basic, (c) Amphoteric, (d) Acidic
- B. (a) Basic, (b) Neutral, (c) Acidic, (d) Amphoteric
- C. (a) Neutral, (b) Basic, (c) Amphoteric, (d) Acidic
- D. (a) Acidic, (b) Amphoteric, (c) Basic, (d) Neutral
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Q8
CHEMISTRY
Unit 11: d- and f-Block Elements
Match the following:
Oxide — Nature
(a) CO
(b) BaO
(c) Al2O3
(d) Cl2O7
Which of the following is the correct option?
- A. (iv)(iii)(ii)(i)
- B. (i)(ii)(iii)(iv)
- C. (ii)(i)(iv)(iii)
- D. (iii)(iv)(i)(ii)
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Q9
CHEMISTRY
Unit 4: Chemical Thermodynamics
Hydrolysis of sucrose is given by the following reaction:
Sucrose + H2O ⇌ Glucose + Fructose
If the equilibrium constant (Kc) is 2 × 10^13 at 300 K, the value of ΔrG° at the same temperature will be:
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2020 (5 sets)
- A. −8.314 J mol−1 K−1 × 300 K × ln(4 × 10^13)
- B. −8.314 J mol−1 K−1 × 300 K × ln(2 × 10^13)
- C. 8.314 J mol−1 K−1 × 300 K × ln(2 × 10^13)
- D. 8.314 J mol−1 K−1 × 300 K × ln(3 × 10^13)
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Q10
CHEMISTRY
Unit 18: Organic Compounds Containing Nitrogen
Urea reacts with water to form A which will decompose to form B. B when passed through Cu2+ (aq), deep blue colour solution C is formed. What is the formula of C from the following?
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- A. CuCO3·Cu(OH)2
- B. CuSO4
- C. [Cu(NH3)4]2+
- D. Cu(OH)2
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Q11
CHEMISTRY
Unit 19: Biomolecules
Which of the following is a basic amino acid?
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- A. Lysine
- B. Serine
- C. Alanine
- D. Tyrosine
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Q12
CHEMISTRY
Unit 20: Principles Related to Practical Chemistry
Paper chromatography is an example of:
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- A. Column chromatography
- B. Adsorption chromatography
- C. Partition chromatography
- D. Thin layer chromatography
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Q13
BIOLOGY
Unit 5: Human Physiology
The following metal ion activates many enzymes, participates in the oxidation of glucose to produce ATP and, with Na, is responsible for the transmission of nerve signals.
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- A. Potassium
- B. Iron
- C. Copper
- D. Calcium
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Q15
CHEMISTRY
Unit 11: d- and f-Block Elements
Identify the correct statements from the following:
(a) CO2(g) is used as refrigerant for ice-cream and frozen food.
(b) The structure of C60 contains twelve six-membered rings and twenty-five carbon rings.
(c) ZSM-5, a type of zeolite, is used to convert alcohols into gasoline.
(d) CO is colorless and odourless gas.
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- A. (c) and (d) only
- B. (a), (b) and (c) only
- C. (a) and (c) only
- D. (b) and (c) only
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Q16
CHEMISTRY
Unit 15: Hydrocarbons
Which of the following alkane cannot be made in good yield by Wurtz reaction?
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- A. n-Butane
- B. n-Hexane
- C. 2,3-Dimethylbutane
- D. n-Heptane
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Q17
CHEMISTRY
Unit 14: Some Basic Principles of Organic Chemistry
Which of the following is a natural polymer?
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- A. poly(butadiene-acrylonitrile)
- B. cis-1,4-polyisoprene
- C. poly(butadiene-styrene)
- D. polybutadiene
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Q18
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
On electrolysis of dilute sulphuric acid using platinum (Pt) electrode, the product obtained at anode will be:
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- A. SO2 gas
- B. Hydrogen gas
- C. Oxygen gas
- D. H2S gas
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Q19
CHEMISTRY
Unit 5: Solutions
Measuring zeta potential is useful in determining which property of colloidal solution?
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- A. Size of the colloidal particles
- B. Viscosity
- C. Solubility
- D. Stability of the colloidal particles
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Q20
CHEMISTRY
Unit 5: Solutions
HCl was passed through a solution of CaCl2, MgCl2 and NaCl. Which of the following compound(s) crystallise(s)?
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- A. NaCl, MgCl2 and CaCl2
- B. Both MgCl2 and CaCl2
- C. Only NaCl
- D. Only MgCl2
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Q22
CHEMISTRY
Unit 5: Solutions
The mixture which shows positive deviation from Raoult’s law is:
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- A. Chloroethane + bromoethane
- B. Ethanol + acetone
- C. Benzene + toluene
- D. Acetone + chloroform
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Q23
CHEMISTRY
Unit 11: d- and f-Block Elements
The calculated spin only magnetic moment of Cr2+ ion is:
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- A. 2.84 BM
- B. 3.87 BM
- C. 4.90 BM
- D. 5.92 BM
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Q24
CHEMISTRY
Unit 8: Chemical Kinetics
An increase in the concentration of the reactants of a reaction leads to change in:
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- A. collision frequency
- B. activation energy
- C. heat of reaction
- D. threshold energy
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Q24
CHEMISTRY
Unit 8: Chemical Kinetics
An increase in the concentration of the reactants of a reaction leads to change in:
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- A. collision frequency
- B. activation energy
- C. heat of reaction
- D. threshold energy
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Q26
BIOLOGY
Unit 1: Diversity in Living World
An element has a body centred cubic (bcc) structure with a cell edge of 288 pm. The atomic radius is:
- A. sqrt(3) × 288 pm / 4
- B. sqrt(3) × 288 pm / 2
- C. sqrt(2) × 288 pm / 4
- D. sqrt(4) × 288 pm / 3
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Q26
PHYSICS
Unit 1: Physics and Measurement
An element has a body centered cubic (bcc) structure with a cell edge of 288 pm. The atomic radius is:
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- A. (√3 × 288 pm) / 4
- B. (√4 × 288 pm) / 2
- C. (√2 × 288 pm) / 4
- D. (√4 × 288 pm) / 3
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Q27
CHEMISTRY
Unit 19: Biomolecules
Sucrose on hydrolysis gives:
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- A. α-D-Fructose + β-D-Fructose
- B. β-D-Glucose + α-D-Fructose
- C. α-D-Glucose + β-D-Glucose
- D. α-D-Glucose + β-D-Fructose
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Q27
CHEMISTRY
Unit 19: Biomolecules
Sucrose on hydrolysis gives:
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- A. α-D-Fructose and β-D-Fructose
- B. β-D-Glucose and α-D-Fructose
- C. α-D-Glucose and β-D-Glucose
- D. α-D-Glucose and β-D-Fructose
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Q28
CHEMISTRY
Unit 12: Coordination Compounds
Which of the following is the correct order of increasing field strength of ligands to form coordination compounds?
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- A. SCN− < CO < F− < CN−
- B. SCN− < F− < CO < CN−
- C. SCN− < F− < CN− < CO
- D. F− < SCN− < CO < CN−
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Q28
CHEMISTRY
Unit 12: Coordination Compounds
Which of the following is the correct order of increasing field strength of ligands to form coordination compounds?
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2020 (9 sets)
- A. CN− < CO < SCN− < F−
- B. SCN− < F− < CO < CN−
- C. SCN− < F− < CN− < CO
- D. F− < SCN− < CO < CN−
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Q29
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
The number of Faradays (F) required to produce 20 g of calcium from molten CaCl2 (Atomic mass of Ca = 40 g mol−1) is:
↻ Repeated question — also appeared in
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- A. 4
- B. 1
- C. 2
- D. 3
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Q29
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
The number of Faradays (F) required to produce 20 g of calcium from molten CaCl2 (Atomic mass of Ca = 40 g mol−1) is:
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 4
- B. 1
- C. 2
- D. 3
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Q30
CHEMISTRY
Unit 17: Organic Compounds Containing Oxygen
Reaction between acetone and methylmagnesium chloride followed by hydrolysis will give:
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- A. Isobutyl alcohol
- B. Isopropyl alcohol
- C. Sec. butyl alcohol
- D. Tert. butyl alcohol
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Q31
CHEMISTRY
Unit 10: p-Block Elements
Which of the following oxoacids of sulphur has an −O−O− linkage?
- A. H2S2O7, pyrosulphuric acid
- B. H2SO3, sulphurous acid
- C. H2SO4, sulphuric acid
- D. H2S2O8, peroxodisulphuric acid
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Q32
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
What is the change in oxidation number of carbon in the following reaction?
CH4 + 4Cl2 → CCl4 + 4HCl
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- A. 0 to −4
- B. 4 to 4
- C. 0 to 4
- D. −4 to 4
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Q33
CHEMISTRY
Unit 14: Some Basic Principles of Organic Chemistry
Which of the following is a cationic detergent?
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- A. Sodium dodecylbenzene sulphonate
- B. Sodium lauryl sulphate
- C. Sodium stearate
- D. Cetyltrimethyl ammonium bromide
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Q34
PHYSICS
Unit 9: Kinetic Theory of Gases
A mixture of N2 and Ar gases in a cylinder contains 7 g of N2 and 8 g of Ar. If the total pressure of the mixture of the gases in the cylinder is 27 bar, the partial pressure of N2 is: [Use atomic masses (in g mol−1): N = 14, Ar = 40]
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- A. 18 bar
- B. 9 bar
- C. 12 bar
- D. 15 bar
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Q35
CHEMISTRY
Unit 11: d- and f-Block Elements
Identify the incorrect statement.
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- A. The oxidation states of chromium in CrO4^2− and Cr2O7^2− are not the same.
- B. Cr2+ (d4) is a stronger reducing agent than Fe2+ (d6) in water.
- C. The transition metals and their compounds are known for their catalytic activity due to their ability to adopt multiple oxidation states and to form complexes.
- D. Interstitial compounds are those that are formed when small atoms like H, C or N are trapped inside the crystal lattices of metals.
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Q36
CHEMISTRY
Unit 11: d- and f-Block Elements
Identify the incorrect match.
Name — IUPAC Official Name
(a) Unnilunium — (i) Mendelevium
(b) Unniltrium — (ii) Lawrencium
(c) Unnilhexium — (iii) Seaborgium
(d) Unununnium — (iv) Darmstadtium
↻ Repeated question — also appeared in
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- A. (d), (iv)
- B. (a), (i)
- C. (b), (ii)
- D. (c), (iii)
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Q37
CHEMISTRY
Unit 17: Organic Compounds Containing Oxygen
Reaction between benzaldehyde and acetophenone in presence of dilute NaOH is known as:
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- A. Cross Aldol condensation
- B. Aldol condensation
- C. Cannizzaro’s reaction
- D. Cross Cannizzaro’s reaction
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Q39
CHEMISTRY
Unit 6: Equilibrium
Find out the solubility of Ni(OH)2 in 0.1 M NaOH. Given that the ionic product of Ni(OH)2 is 2×10−15.
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2020 (8 sets)
- A. 1×10−8 M
- B. 2×10−13 M
- C. 2×10−8 M
- D. 1×10−13 M
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Q40
CHEMISTRY
Unit 16: Organic Compounds Containing Halogens
Elimination reaction of 2-bromopentane to form pent-2-ene is:
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2020 (1 set)
- A. (a), (b), (d)
- B. (a), (b), (c)
- C. (a), (c), (d)
- D. (b), (c), (d)
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Q41
CHEMISTRY
Unit 8: Chemical Kinetics
The rate constant for a first order reaction is 4.606×10−3 s−1. The time required to reduce 2.0 g of the reactant to 0.2 g is:
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- A. 1000 s
- B. 100 s
- C. 200 s
- D. 500 s
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Q42
CHEMISTRY
Unit 14: Some Basic Principles of Organic Chemistry
A tertiary butyl carbocation is more stable than a secondary butyl carbocation because of which of the following?
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- A. Hyperconjugation
- B. −I effect of −CH3 groups
- C. +I effect of −CH3 groups
- D. −R effect of −CH3 groups
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Q43
CHEMISTRY
Unit 1: Some Basic Concepts in Chemistry
Which one of the followings has maximum number of atoms?
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- A. 1 g of Li(s) [Atomic mass of Li = 7]
- B. 1 g of Ag(s) [Atomic mass of Ag = 108]
- C. 1 g of Mg(s) [Atomic mass of Mg = 24]
- D. 1 g of O2(g) [Atomic mass of O = 16]
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Q43
CHEMISTRY
Unit 1: Some Basic Concepts in Chemistry
Which one of the following has the maximum number of atoms?
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- A. 1 g of Li(s) [Atomic mass of Li = 7]
- B. 1 g of Ag(s) [Atomic mass of Ag = 108]
- C. 1 g of Mg(s) [Atomic mass of Mg = 24]
- D. 1 g of O2(g) [Atomic mass of O = 16]
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Q44
BIOLOGY
Unit 8: Biology and Human Welfare
Which of the following is not correct about carbon monoxide?
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- A. It is produced due to incomplete combustion.
- B. It forms carboxyhaemoglobin.
- C. It reduces oxygen carrying ability of blood.
- D. The carboxyhaemoglobin (haemoglobin bound to CO) is less stable than oxyhaemoglobin.
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Q44
BIOLOGY
Unit 8: Biology and Human Welfare
Which of the following is not correct about carbon monoxide?
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- A. It is produced due to incomplete combustion.
- B. It forms carboxyhaemoglobin.
- C. It reduces oxygen carrying ability of blood.
- D. The carboxyhaemoglobin (haemoglobin bound to CO) is less stable than oxyhaemoglobin.
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Q45
CHEMISTRY
Unit 1: Some Basic Concepts in Chemistry
The number of protons, neutrons and electrons in 175_71Lu, respectively, are:
- A. 175, 104 and 71
- B. 71, 104 and 71
- C. 104, 71 and 71
- D. 71, 71 and 104
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Q45
BIOLOGY
Unit 8: Biology and Human Welfare
The number of protons, neutrons and electrons in 17571Lu, respectively, are:
- A. 175, 104 and 71
- B. 71, 104 and 71
- C. 104, 71 and 71
- D. 71, 71 and 104
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Q46
BIOLOGY
Unit 6: Reproduction
In water hyacinth and water lily, pollination takes place by:
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- A. insects and water
- B. insects or wind
- C. water currents only
- D. wind and water
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Q46
BIOLOGY
Unit 6: Reproduction
In water hyacinth and water lily, pollination takes place by:
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- A. insects and water
- B. insects or wind
- C. water currents only
- D. wind and water
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Q47
BIOLOGY
Unit 6: Reproduction
By which method was a new breed 'Hisardale' of sheep formed by using Bikaneri ewes and Marino rams?
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- A. Inbreeding
- B. Out crossing
- C. Mutational breeding
- D. Cross breeding
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Q47
BIOLOGY
Unit 8: Biology and Human Welfare
By which method was a new breed 'Hisardale' of sheep formed by using Bikaneri ewes and Marino rams?
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2020 (5 sets)
- A. Inbreeding
- B. Out crossing
- C. Mutational breeding
- D. Cross breeding
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Q48
BIOLOGY
Unit 8: Biology and Human Welfare
Snow-blindness in Antarctic region is due to:
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- A. Damage to retina caused by infra-red rays
- B. Freezing of fluids in the eye by low temperature
- C. Inflammation of cornea due to high dose of UV-B radiation
- D. High reflection of light from snow
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Q49
BIOLOGY
Unit 5: Human Physiology
Match the following columns and select the correct option.
Column I Column II
(a) Eosinophils (i) Immune response
(b) Basophils (ii) Phagocytosis
(c) Neutrophils (iii) Release histaminase, destructive enzymes
(d) Lymphocytes (iv) Release granules containing histamine
↻ Repeated question — also appeared in
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- A. (a)(b)(c)(d) = (ii)(i)(iii)(iv)
- B. (a)(b)(c)(d) = (iii)(iv)(ii)(i)
- C. (a)(b)(c)(d) = (iv)(i)(ii)(iii)
- D. (a)(b)(c)(d) = (i)(ii)(iv)(iii)
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Q50
BIOLOGY
Unit 1: Diversity in Living World
Strobili or cones are found in:
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- A. Equisetum
- B. Salvinia
- C. Pteris
- D. Marchantia
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Q51
BIOLOGY
Unit 6: Reproduction
Meiotic division of the secondary oocyte is completed:
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- A. At the time of fusion of a sperm with an ovum
- B. Prior to ovulation
- C. At the time of copulation
- D. After zygote formation
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Q52
BIOLOGY
Unit 5: Human Physiology
The QRS complex in a standard ECG represents:
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- A. Repolarisation of ventricles
- B. Repolarisation of auricles
- C. Depolarisation of auricles
- D. Depolarisation of ventricles
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Q53
BIOLOGY
Unit 3: Cell Structure and Function
If the distance between two consecutive base pairs is 0.34 nm and the total number of base pairs of a DNA double helix in a typical mammalian cell is 6.6 × 10^9 bp, then the length of the DNA is approximately:
↻ Repeated question — also appeared in
2020 (2 sets)
- A. 2.7 meters
- B. 2.0 meters
- C. 2.5 meters
- D. 2.2 meters
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Q54
BIOLOGY
Unit 6: Reproduction
The plant parts which consist of two generations, one within the other, are:
(a) Pollen grains inside the anther
(b) Germinated pollen grain with two male gametes
(c) Seed inside the fruit
(d) Embryo sac inside the ovule
↻ Repeated question — also appeared in
2020 (5 sets)
- A. (a) and (d)
- B. (a) only
- C. (a), (b) and (c)
- D. (c) and (d)
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Q55
BIOLOGY
Unit 7: Genetics and Evolution
How many true breeding pea plant varieties did Mendel select as pairs, which were similar except in one character with contrasting traits?
↻ Repeated question — also appeared in
2020 (7 sets)
- A. 8
- B. 4
- C. 2
- D. 14
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Q56
CHEMISTRY
Unit 19: Biomolecules
Match the following columns and select the correct option.
Column I Column II
(a) Clostridium butylicum (i) Cyclosporin-A
(b) Trichoderma polysporum (ii) Butyric Acid
(c) Monascus purpureus (iii) Citric Acid
(d) Aspergillus niger (iv) Blood cholesterol lowering agent
- A. (a)(b)(c)(d) = (iv)(iii)(ii)(i)
- B. (a)(b)(c)(d) = (iii)(iv)(ii)(i)
- C. (a)(b)(c)(d) = (ii)(i)(iv)(iii)
- D. (a)(b)(c)(d) = (i)(ii)(iv)(iii)
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Q57
BIOLOGY
Unit 6: Reproduction
Which of the following hormone levels will cause release of ovum (ovulation) from the Graafian follicle?
↻ Repeated question — also appeared in
2020 (4 sets)
- A. Low concentration of FSH
- B. High concentration of Estrogen
- C. High concentration of Progesterone
- D. Low concentration of LH
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Q58
BIOLOGY
Unit 7: Genetics and Evolution
Which of the following refer to correct example(s) of organisms which have evolved due to changes in environment brought about by anthropogenic action?
(a) Darwin’s finches of Galapagos islands
(b) Herbicide resistant weeds
(c) Drug resistant eukaryotes
(d) Man-created breeds of domesticated animals like dogs
↻ Repeated question — also appeared in
2020 (6 sets)
- A. only (d)
- B. only (a)
- C. (a) and (c)
- D. (b), (c) and (d)
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Q59
BIOLOGY
Unit 1: Diversity in Living World
Which of the following statements are true for the phylum Chordata?
(a) In Urochordata notochord extends from head to tail and it is present throughout their life.
(b) In Vertebrata notochord is present during the embryonic period only.
(c) Central nervous system is dorsal and hollow.
(d) Chordata is divided into 3 subphyla: Hemichordata, Tunicata and Cephalochordata.
↻ Repeated question — also appeared in
2020 (8 sets)
- A. (b) and (c)
- B. (d) and (c)
- C. (c) and (a)
- D. (a) and (b)
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Q59
BIOLOGY
Unit 1: Diversity in Living World
Which of the following statements are true for the phylum Chordata?
(a) In Urochordata, notochord extends from head to tail and it is present throughout their life.
(b) In Vertebrata, notochord is present during the embryonic period only.
(c) Central nervous system is dorsal and hollow.
(d) Chordata is divided into 3 subphyla: Hemichordata, Tunicata and Cephalochordata.
↻ Repeated question — also appeared in
2020 (8 sets)
- A. (b) and (c)
- B. (d) and (c)
- C. (c) and (a)
- D. (a) and (b)
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Q60
CHEMISTRY
Unit 19: Biomolecules
Match the following:
(a) Inhibitor of catalytic activity
(b) Possess peptide bonds
(c) Cell wall material in fungi
(d) Secondary metabolite
Choose the correct option from the following:
Column I Column II
(i) Ricin
(ii) Malonate
(iii) Chitin
(iv) Collagen
- A. (a)(b)(c)(d) = (ii)(iii)(i)(iv)
- B. (a)(b)(c)(d) = (ii)(iv)(iii)(i)
- C. (a)(b)(c)(d) = (iii)(i)(iv)(ii)
- D. (a)(b)(c)(d) = (iii)(iv)(i)(ii)
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Q60
BIOLOGY
Unit 1: Diversity in Living World
Match the following:
(a) Inhibitor of catalytic activity
(b) Possess peptide bonds
(c) Cell wall material in fungi
(d) Secondary metabolite
Choose the correct option from the following.
↻ Repeated question — also appeared in
2020 (2 sets)
- A. (ii)(iii)(i)(iv)
- B. (ii)(iv)(iii)(i)
- C. (iii)(i)(iv)(ii)
- D. (iii)(iv)(i)(ii)
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Q61
BIOLOGY
Unit 6: Reproduction
The body of the ovule is fused within the funicle at:
↻ Repeated question — also appeared in
2020 (7 sets)
- A. Chalaza
- B. Hilum
- C. Micropyle
- D. Nucellus
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Q61
BIOLOGY
Unit 6: Reproduction
The body of the ovule is fused within the funicle at:
↻ Repeated question — also appeared in
2020 (7 sets)
- A. Chalaza
- B. Hilum
- C. Micropyle
- D. Nucellus
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Q62
BIOLOGY
Unit 4: Plant Physiology
The process responsible for facilitating loss of water in liquid form from the tip of grass blades at night and in early morning is:
↻ Repeated question — also appeared in
2020 (9 sets)
- A. Plasmolysis
- B. Transpiration
- C. Root pressure
- D. Imbibition
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Q62
BIOLOGY
Unit 4: Plant Physiology
The process responsible for facilitating loss of water in liquid form from the tip of grass blades at night and in early morning is:
↻ Repeated question — also appeared in
2020 (9 sets)
- A. Plasmolysis
- B. Transpiration
- C. Root pressure
- D. Imbibition
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Q63
BIOLOGY
Unit 3: Cell Structure and Function
Which of the following statements about inclusion bodies is incorrect?
↻ Repeated question — also appeared in
2020 (8 sets)
- A. These represent reserve material in cytoplasm.
- B. They are not bound by any membrane.
- C. These are involved in ingestion of food particles.
- D. They lie free in the cytoplasm.
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Q64
BIOLOGY
Unit 6: Reproduction
Match the following columns and select the correct option.
Column I Column II
(a) Placenta (i) Androgens
(b) Zona pellucida (ii) Human Chorionic Gonadotropin (hCG)
(c) Bulbo-urethral glands (iii) Layer of the ovum
(d) Leydig cells (iv) Lubrication of the penis
↻ Repeated question — also appeared in
2020 (5 sets)
- A. (ii)(iii)(iv)(i)
- B. (iv)(iii)(i)(ii)
- C. (i)(iv)(ii)(iii)
- D. (iii)(ii)(iv)(i)
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Q65
BIOLOGY
Unit 3: Cell Structure and Function
The process of growth is maximum during:
- A. Dormancy
- B. Log phase
- C. Lag phase
- D. Senescence
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Q66
BIOLOGY
Unit 9: Biotechnology and Its Applications
Match the organism with its use in biotechnology.
(a) Bacillus thuringiensis
(b) Thermus aquaticus
(c) Agrobacterium tumefaciens
(d) Salmonella typhimurium
Select the correct option from the following.
- A. (iii)(iv)(i)(ii)
- B. (ii)(iv)(iii)(i)
- C. (iv)(iii)(i)(ii)
- D. (iii)(ii)(iv)(i)
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Q67
BIOLOGY
Unit 1: Diversity in Living World
Floridean starch has structure similar to:
↻ Repeated question — also appeared in
2020 (8 sets)
- A. Laminarin and cellulose
- B. Starch and cellulose
- C. Amylopectin and glycogen
- D. Mannitol and algin
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Q68
BIOLOGY
Unit 1: Diversity in Living World
Match the following columns and select the correct option.
Column I Column II
(a) 6 - 15 pairs of gill slits (i) Trygon
(b) Heterocercal caudal fin (ii) Cyclostomes
(c) Air bladder (iii) Chondrichthyes
(d) Poison sting (iv) Osteichthyes
↻ Repeated question — also appeared in
2020 (3 sets)
- A. (i)(iv)(iii)(ii)
- B. (ii)(iii)(iv)(i)
- C. (iii)(iv)(i)(ii)
- D. (iv)(ii)(iii)(i)
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Q69
BIOLOGY
Unit 5: Human Physiology
Presence of which of the following conditions in urine are indicative of Diabetes Mellitus?
↻ Repeated question — also appeared in
2020 (8 sets)
- A. Renal calculi and Hyperglycaemia
- B. Uremia and Ketonuria
- C. Uremia and Renal calculi
- D. Ketonuria and Glycosuria
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Q70
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Identify the incorrect statement.
↻ Repeated question — also appeared in
2020 (6 sets)
- A. Due to deposition of tannins, resins, oils etc., heart wood is dark in colour.
- B. Heart wood does not conduct water but gives mechanical support.
- C. Sapwood is involved in conduction of water and minerals from root to leaf.
- D. Sapwood is the innermost secondary xylem and is lighter in colour.
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Q71
BIOLOGY
Unit 3: Cell Structure and Function
Which one of the following is the most abundant protein in animals?
↻ Repeated question — also appeared in
2020 (4 sets)
- A. Insulin
- B. Haemoglobin
- C. Collagen
- D. Lectin
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Q72
BIOLOGY
Unit 4: Plant Physiology
Which of the following is not an inhibitory substance governing seed dormancy?
↻ Repeated question — also appeared in
2020 (7 sets)
- A. Para-ascorbic acid
- B. Gibberellic acid
- C. Abscisic acid
- D. Phenolic acid
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Q73
BIOLOGY
Unit 5: Human Physiology
The enzyme enterokinase helps in conversion of:
↻ Repeated question — also appeared in
2020 (8 sets)
- A. pepsinogen into pepsin
- B. protein into polypeptides
- C. trypsinogen into trypsin
- D. caseinogen into casein
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Q74
BIOLOGY
Unit 1: Diversity in Living World
Match the following columns and select the correct option.
Column I Column II
(a) Gregarious, polyphagous pest (i) Asterias
(b) Adult with radial symmetry and larva with bilateral symmetry (ii) Scorpion
(c) Book lungs (iii) Ctenoplana
(d) Bioluminescence (iv) Locusta
↻ Repeated question — also appeared in
2020 (1 set)
- A. (ii)(i)(iii)(iv)
- B. (i)(iii)(ii)(iv)
- C. (iv)(i)(ii)(iii)
- D. (iii)(ii)(i)(iv)
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Q75
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Cuboidal epithelium with brush border of microvilli is found in:
↻ Repeated question — also appeared in
2020 (7 sets)
- A. eustachian tube
- B. lining of intestine
- C. ducts of salivary glands
- D. proximal convoluted tubule of nephron
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Q75
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Cuboidal epithelium with brush border of microvilli is found in:
↻ Repeated question — also appeared in
2020 (7 sets)
- A. Eustachian tube
- B. Lining of intestine
- C. Ducts of salivary glands
- D. Proximal convoluted tubule of nephron
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Q76
BIOLOGY
Unit 7: Genetics and Evolution
Embryological support for evolution was disapproved by:
↻ Repeated question — also appeared in
2020 (9 sets)
- A. Oparin
- B. Karl Ernst von Baer
- C. Alfred Wallace
- D. Charles Darwin
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Q76
BIOLOGY
Unit 7: Genetics and Evolution
Embryological support for evolution was disapproved by:
↻ Repeated question — also appeared in
2020 (9 sets)
- A. Oparin
- B. Karl Ernst von Baer
- C. Alfred Wallace
- D. Charles Darwin
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Q77
BIOLOGY
Unit 7: Genetics and Evolution
Experimental verification of the chromosomal theory of inheritance was done by:
↻ Repeated question — also appeared in
2020 (9 sets)
- A. Morgan
- B. Mendel
- C. Sutton
- D. Boveri
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Q77
BIOLOGY
Unit 7: Genetics and Evolution
Experimental verification of the chromosomal theory of inheritance was done by:
↻ Repeated question — also appeared in
2020 (9 sets)
- A. Morgan
- B. Mendel
- C. Sutton
- D. Boveri
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Q78
BIOLOGY
Unit 7: Genetics and Evolution
Identify the wrong statement with reference to the gene 'I' that controls ABO blood groups.
↻ Repeated question — also appeared in
2020 (8 sets)
- A. Allele 'i' does not produce any sugar.
- B. The gene (I) has three alleles.
- C. A person will have only two of the three alleles.
- D. When I_A and I_B are present together, they express same type of sugar.
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Q78
BIOLOGY
Unit 7: Genetics and Evolution
Identify the wrong statement with reference to the gene ‘I’ that controls ABO blood groups.
↻ Repeated question — also appeared in
2020 (8 sets)
- A. Allele ‘i’ does not produce any sugar.
- B. The gene (I) has three alleles.
- C. A person will have only two of the three alleles.
- D. When I A and I B are present together, they express same type of sugar.
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Q79
BIOLOGY
Unit 3: Cell Structure and Function
Identify the basic amino acid from the following.
- A. Valine
- B. Tyrosine
- C. Glutamic Acid
- D. Lysine
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Q79
BIOLOGY
Unit 5: Human Physiology
Identify the basic amino acid from the following.
↻ Repeated question — also appeared in
2020 (2 sets)
- A. Valine
- B. Tyrosine
- C. Glutamic acid
- D. Lysine
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Q80
BIOLOGY
Unit 7: Genetics and Evolution
Dissolution of the synaptonemal complex occurs during:
↻ Repeated question — also appeared in
2020 (2 sets)
- A. Leptotene
- B. Pachytene
- C. Zygotene
- D. Diplotene
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Q80
BIOLOGY
Unit 6: Reproduction
Dissolution of the synaptonemal complex occurs during:
↻ Repeated question — also appeared in
2020 (3 sets)
- A. Leptotene
- B. Pachytene
- C. Zygotene
- D. Diplotene
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Q81
BIOLOGY
Unit 5: Human Physiology
Some dividing cells exit the cell cycle and enter the vegetative inactive stage. This is called quiescent stage (G0). This process occurs at the end of:
- A. G2 phase
- B. M phase
- C. G1 phase
- D. S phase
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Q82
BIOLOGY
Unit 5: Human Physiology
Match the following columns and select the correct option.
Column I Column II
(a) Pituitary gland (i) Grave's disease
(b) Thyroid gland (ii) Diabetes mellitus
(c) Adrenal gland (iii) Diabetes insipidus
(d) Pancreas (iv) Addison's disease
↻ Repeated question — also appeared in
2020 (3 sets)
- A. (ii)(i)(iv)(iii)
- B. (iv)(iii)(i)(ii)
- C. (iii)(ii)(i)(iv)
- D. (iii)(i)(iv)(ii)
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Q83
BIOLOGY
Unit 5: Human Physiology
Select the correct events that occur during inspiration.
(a) Contraction of diaphragm
(b) Contraction of external inter-costal muscles
(c) Pulmonary volume decreases
(d) Intra-pulmonary pressure increases
↻ Repeated question — also appeared in
2020 (6 sets)
- A. Only (d)
- B. (a) and (b)
- C. (c) and (d)
- D. (a), (b) and (d)
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Q84
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
The ovary is half inferior in:
↻ Repeated question — also appeared in
2020 (7 sets)
- A. Plum
- B. Brinjal
- C. Mustard
- D. Sunflower
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Q85
BIOLOGY
Unit 4: Plant Physiology
The oxygenation activity of RuBisCO enzyme in photorespiration leads to the formation of:
↻ Repeated question — also appeared in
2020 (7 sets)
- A. 1 molecule of 4-C compound and 1 molecule of 2-C compound
- B. 2 molecules of 3-C compound
- C. 1 molecule of 3-C compound
- D. 1 molecule of 6-C compound
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Q86
BIOLOGY
Unit 6: Reproduction
Which of the following statements is not correct?
↻ Repeated question — also appeared in
2020 (1 set)
- A. Genetically engineered insulin is produced in E. coli.
- B. In man insulin is synthesised as a proinsulin.
- C. The proinsulin has an extra peptide called C-peptide.
- D. The functional insulin has A and B chains linked together by hydrogen bonds.
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Q87
BIOLOGY
Unit 1: Diversity in Living World
Which of the following pairs is of unicellular algae?
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2020 (8 sets)
- A. Chlorella and Spirulina
- B. Laminaria and Sargassum
- C. Gelidium and Gracilaria
- D. Anabaena and Volvox
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Q88
CHEMISTRY
Unit 20: Principles Related to Practical Chemistry
Choose the correct pair from the following:
- A. Exonucleases - Make cuts at specific positions within DNA
- B. Ligases - Join the two DNA molecules
- C. Polymerases - Break the DNA into fragments
- D. Nucleases - Separate the two strands of DNA
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Q89
BIOLOGY
Unit 5: Human Physiology
Identify the wrong statement with reference to immunity.
↻ Repeated question — also appeared in
2020 (3 sets)
- A. Foetus receives some antibodies from mother; it is an example of passive immunity.
- B. When exposed to antigen (living or dead), antibodies are produced in the host's body. It is called active immunity.
- C. When ready-made antibodies are directly given, it is called passive immunity.
- D. Active immunity is quick and gives full response.
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Q90
BIOLOGY
Unit 5: Human Physiology
Which of the following would help in prevention of diuresis?
↻ Repeated question — also appeared in
2020 (8 sets)
- A. Decrease in secretion of renin by JG cells
- B. More water reabsorption due to undersecretion of ADH
- C. Reabsorption of Na+ and water from renal tubules due to aldosterone
- D. Atrial natriuretic factor causes vasoconstriction
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Q91
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
The transverse section of a plant shows the following anatomical features:
(a) Large number of scattered vascular bundles surrounded by bundle sheath.
(b) Large conspicuous parenchymatous ground tissue.
(c) Vascular bundles conjoint and closed.
(d) Phloem parenchyma absent.
Identify the category of plant and its part:
↻ Repeated question — also appeared in
2020 (8 sets)
- A. Dicotyledonous root
- B. Monocotyledonous stem
- C. Monocotyledonous root
- D. Dicotyledonous stem
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Q92
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Ray florets have:
↻ Repeated question — also appeared in
2020 (6 sets)
- A. Half inferior ovary
- B. Inferior ovary
- C. Superior ovary
- D. Hypogynous ovary
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Q92
BIOLOGY
Unit 6: Reproduction
Ray florets have:
- A. Half inferior ovary
- B. Inferior ovary
- C. Superior ovary
- D. Hypogynous ovary
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Q93
BIOLOGY
Unit 5: Human Physiology
Select the correct statement.
↻ Repeated question — also appeared in
2020 (9 sets)
- A. Insulin is associated with hyperglycemia.
- B. Glucocorticoids stimulate gluconeogenesis.
- C. Glucagon is associated with hypoglycemia.
- D. Insulin acts on pancreatic cells and adipocytes.
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Q93
BIOLOGY
Unit 5: Human Physiology
Select the correct statement.
↻ Repeated question — also appeared in
2020 (9 sets)
- A. Insulin is associated with hyperglycemia.
- B. Glucocorticoids stimulate gluconeogenesis.
- C. Glucagon is associated with hypoglycemia.
- D. Insulin acts on pancreatic cells and adipocytes.
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Q94
BIOLOGY
Unit 7: Genetics and Evolution
Which of the following statements is correct?
↻ Repeated question — also appeared in
2020 (5 sets)
- A. Adenine does not pair with thymine.
- B. Adenine pairs with thymine through two H-bonds.
- C. Adenine pairs with thymine through one H-bond.
- D. Adenine pairs with thymine through three H-bonds.
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Q94
BIOLOGY
Unit 7: Genetics and Evolution
Which of the following statements is correct?
↻ Repeated question — also appeared in
2020 (5 sets)
- A. Adenine does not pair with thymine.
- B. Adenine pairs with thymine through two H-bonds.
- C. Adenine pairs with thymine through one H-bond.
- D. Adenine pairs with thymine through three H-bonds.
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Q95
BIOLOGY
Unit 8: Biology and Human Welfare
Which of the following is put into anaerobic sludge digester for further sewage treatment?
↻ Repeated question — also appeared in
2020 (6 sets)
- A. Activated sludge
- B. Primary sludge
- C. Floating debris
- D. Effluents of primary treatment
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Q95
BIOLOGY
Unit 8: Biology and Human Welfare
Which of the following is put into anaerobic sludge digester for further sewage treatment?
↻ Repeated question — also appeared in
2020 (6 sets)
- A. Activated sludge
- B. Primary sludge
- C. Floating debris
- D. Effluents of primary treatment
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Q96
BIOLOGY
Unit 4: Plant Physiology
Name the plant growth regulator which, upon spraying on sugarcane crop, increases the length of stem, thus increasing the yield of sugarcane crop.
↻ Repeated question — also appeared in
2020 (8 sets)
- A. Abscisic acid
- B. Cytokinin
- C. Gibberellin
- D. Ethylene
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Q97
BIOLOGY
Unit 6: Reproduction
The roots that originate from the base of the stem are:
↻ Repeated question — also appeared in
2020 (1 set)
- A. Lateral roots
- B. Fibrous roots
- C. Primary roots
- D. Prop roots
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Q98
CHEMISTRY
Unit 13: Purification and Characterisation of Organic Compounds
The specific palindromic sequence which is recognized by EcoRI is:
↻ Repeated question — also appeared in
2020 (2 sets)
- A. 5' - GGATCC - 3' 3' - CCTAGG - 5'
- B. 5' - GAATTC - 3' 3' - CTTAAG - 5'
- C. 5' - GGAACC - 3' 3' - CCTTGG - 5'
- D. 5' - CTTAAG - 3' 3' - GAATTC - 5'
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Q99
BIOLOGY
Unit 5: Human Physiology
Match the following columns and select the correct option.
Column I Column II
(a) Floating ribs (i) Located between second and seventh ribs
(b) Acromion (ii) Head of the humerus
(c) Scapula (iii) Clavicle
(d) Glenoid cavity (iv) Do not connect with the sternum
↻ Repeated question — also appeared in
2020 (1 set)
- A. (iv)(iii)(i)(ii)
- B. (ii)(iv)(i)(iii)
- C. (i)(iii)(ii)(iv)
- D. (iii)(ii)(iv)(i)
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Q100
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
If the head of cockroach is removed, it may live for a few days because:
↻ Repeated question — also appeared in
2020 (7 sets)
- A. the head holds a 1/3rd of a nervous system while the rest is situated along the dorsal part of its body.
- B. the supra-oesophageal ganglia of the cockroach are situated in ventral part of abdomen.
- C. the cockroach does not have nervous system.
- D. the head holds a small proportion of a nervous system while the rest is situated along the ventral part of its body.
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Q101
BIOLOGY
Unit 8: Biology and Human Welfare
Match the following diseases with the causative organism and select the correct option.
Column I Column II
(a) Typhoid (i) Wuchereria
(b) Pneumonia (ii) Plasmodium
(c) Filariasis (iii) Salmonella
(d) Malaria (iv) Haemophilus
↻ Repeated question — also appeared in
2020 (1 set)
- A. (iv)(i)(ii)(iii)
- B. (i)(iii)(ii)(iv)
- C. (iii)(iv)(i)(ii)
- D. (ii)(i)(iii)(iv)
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Q102
BIOLOGY
Unit 3: Cell Structure and Function
Which is the important site of formation of glycoproteins and glycolipids in eukaryotic cells?
↻ Repeated question — also appeared in
2020 (8 sets)
- A. Polysomes
- B. Endoplasmic reticulum
- C. Peroxisomes
- D. Golgi bodies
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Q122
PHYSICS
Unit 20: Experimental Skills
In gel electrophoresis, separated DNA fragments can be visualized with the help of:
- A. Ethidium bromide in infrared radiation
- B. Acetocarmine in bright blue light
- C. Ethidium bromide in UV radiation
- D. Acetocarmine in UV radiation
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Q133
CHEMISTRY
Unit 19: Biomolecules
Identify the substances having glycosidic bond and peptide bond, respectively, in their structure:
↻ Repeated question — also appeared in
2020 (6 sets)
- A. Inulin, insulin
- B. Chitin, cholesterol
- C. Glycerol, trypsin
- D. Cellulose, lecithin
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Q136
PHYSICS
Unit 17: Dual Nature of Matter and Radiation
An electron is accelerated from rest through a potential difference of V volt. If the de Broglie wavelength of the electron is 1.227 × 10^-2 nm, the potential difference is:
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 10^4 V
- B. 10 V
- C. 10^2 V
- D. 10^3 V
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Q137
PHYSICS
Unit 16: Optics
In Young’s double slit experiment, if the separation between coherent sources is halved and the distance of the screen from the coherent sources is doubled, then the fringe width becomes:
↻ Repeated question — also appeared in
2020 (8 sets)
- A. one-fourth
- B. double
- C. half
- D. four times
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Q138
PHYSICS
Unit 3: Laws of Motion
Two bodies of mass 4 kg and 6 kg are tied to the ends of a massless string. The string passes over a pulley which is frictionless (see figure). The acceleration of the system in terms of acceleration due to gravity (g) is:
↻ Repeated question — also appeared in
2020 (7 sets)
- A. g/10
- B. g
- C. g/2
- D. g/5
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Q139
PHYSICS
Unit 15: Electromagnetic Waves
The ratio of contributions made by the electric field and magnetic field components to the intensity of an electromagnetic wave is: (c = speed of electromagnetic waves)
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 1 : c^2
- B. c : 1
- C. 1 : 1
- D. 1 : c
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Q140
PHYSICS
Unit 9: Kinetic Theory of Gases
The mean free path for a gas, with molecular diameter d and number density n can be expressed as:
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 1/(2√2 π n d^2)
- B. 1/(2 n d π)
- C. 1/(2 n d π^2)
- D. 1/(2√2 n d^2)
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Q141
PHYSICS
Unit 14: Electromagnetic Induction and Alternating Currents
A series LCR circuit is connected to an AC voltage source. When L is removed from the circuit, the phase difference between current and voltage is π/3. If instead C is removed from the circuit, the phase difference is again π/3 between current and voltage. The power factor of the circuit is:
↻ Repeated question — also appeared in
2020 (8 sets)
- A. -1.0
- B. zero
- C. 0.5
- D. 1.0
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Q141
PHYSICS
Unit 10: Oscillations and Waves
A series LCR circuit is connected to an ac voltage source. When L is removed from the circuit, the phase difference between current and voltage is π/3. If instead C is removed from the circuit, the phase difference is again π/3 between current and voltage. The power factor of the circuit is:
- A. -1.0
- B. zero
- C. 0.5
- D. 1.0
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Q142
PHYSICS
Unit 16: Optics
A ray is incident at an angle of incidence i on one surface of a small angle prism (with angle of prism A) and emerges normally from the opposite surface. If the refractive index of the material of the prism is μ, then the angle of incidence is nearly equal to:
↻ Repeated question — also appeared in
2020 (9 sets)
- A. A/(2μ)
- B. A/(2μ)
- C. 2A/μ
- D. μA
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Q142
PHYSICS
Unit 16: Optics
A ray is incident at an angle of incidence i on one surface of a small angle prism (with angle of prism A) and emerges normally from the opposite surface. If the refractive index of the material of the prism is μ, then the angle of incidence is nearly equal to:
↻ Repeated question — also appeared in
2020 (9 sets)
- A. A/(2μ)
- B. A/(2μ)
- C. 2A/μ
- D. μA
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Q143
PHYSICS
Unit 1: Physics and Measurement
Taking into account the significant figures, what is the value of 9.99 m - 0.0099 m ?
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 9.9 m
- B. 9.9801 m
- C. 9.98 m
- D. 9.980 m
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Q143
PHYSICS
Unit 1: Physics and Measurement
Taking into account the significant figures, what is the value of 9.99 m − 0.0099 m ?
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 9.9 m
- B. 9.9801 m
- C. 9.98 m
- D. 9.980 m
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Q146
PHYSICS
Unit 11: Electrostatics
In a certain region of space with volume 0.2 m³, the electric potential is found to be 5 V throughout. The magnitude of electric field in this region is:
↻ Repeated question — also appeared in
2020 (7 sets)
- A. 5 N/C
- B. zero
- C. 0.5 N/C
- D. 1 N/C
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Q147
PHYSICS
Unit 7: Properties of Solids and Liquids
Which of the following graph represents the variation of resistivity (ρ) with temperature (T) for copper?
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Q148
PHYSICS
Unit 8: Thermodynamics
Two cylinders A and B of equal capacity are connected to each other via a stop cock. A contains an ideal gas at standard temperature and pressure. B is completely evacuated. The entire system is thermally insulated. The stop cock is suddenly opened. The process is:
↻ Repeated question — also appeared in
2020 (8 sets)
- A. isobaric
- B. isothermal
- C. adiabatic
- D. isochoric
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Q149
PHYSICS
Unit 12: Current Electricity
A resistance wire connected in the left gap of a metre bridge balances a 10 Ω resistance in the right gap at a point which divides the bridge wire in the ratio 3 : 2. If the length of the resistance wire is 1.5 m, then the length of 1 Ω of the resistance wire is:
↻ Repeated question — also appeared in
2020 (6 sets)
- A. 1.5 × 10⁻² m
- B. 1.0 × 10⁻² m
- C. 1.0 × 10⁻¹ m
- D. 1.5 × 10⁻¹ m
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Q150
PHYSICS
Unit 1: Physics and Measurement
The quantities of heat required to raise the temperature of two solid copper spheres of radii r₁ and r₂ (r₁ = 1.5 r₂) through 1 K are in the ratio:
- A. 5/3
- B. 27/8
- C. 9/4
- D. 3/2
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Q152
PHYSICS
Unit 7: Properties of Solids and Liquids
The solids which have the negative temperature coefficient of resistance are:
- A. insulators and semiconductors
- B. metals
- C. insulators only
- D. semiconductors only
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Q153
PHYSICS
Unit 19: Electronic Devices
For transistor action, which of the following statements is correct?
↻ Repeated question — also appeared in
2020 (7 sets)
- A. The base region must be very thin and lightly doped.
- B. Base, emitter and collector regions should have same doping concentrations.
- C. Base, emitter and collector regions should have same size.
- D. Both emitter junction as well as the collector junction are forward biased.
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Q154
PHYSICS
Unit 11: Electrostatics
A spherical conductor of radius 10 cm has a charge of 3.2 × 10⁻⁷ C distributed uniformly. What is the magnitude of electric field at a point 15 cm from the centre of the sphere? Take 1/(4πϵ₀) = 9 × 10⁹ N m²/C².
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 1.28 × 10⁷ N/C
- B. 1.28 × 10⁴ N/C
- C. 1.28 × 10⁵ N/C
- D. 1.28 × 10⁶ N/C
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Q155
PHYSICS
Unit 17: Dual Nature of Matter and Radiation
Light of frequency 1.5 times the threshold frequency is incident on a photosensitive material. What will be the photoelectric current if the frequency is halved and intensity is doubled?
↻ Repeated question — also appeared in
2020 (7 sets)
- A. zero
- B. doubled
- C. four times
- D. one-fourth
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Q156
PHYSICS
Unit 2: Kinematics
Two particles of mass 5 kg and 10 kg respectively are attached to the two ends of a rigid rod of length 1 m with negligible mass. The centre of mass of the system from the 5 kg particle is nearly at a distance of:
- A. 80 cm
- B. 33 cm
- C. 50 cm
- D. 67 cm
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Q157
PHYSICS
Unit 7: Properties of Solids and Liquids
A wire of length L, area of cross section A is hanging from a fixed support. The length of the wire changes to L₁ when mass M is suspended from its free end. The expression for Young’s modulus is:
↻ Repeated question — also appeared in
2020 (8 sets)
- A. MgL / [A(L₁ − L)]
- B. MgL / (AL₁)
- C. Mg(L₁ − L) / AL
- D. MgL / (AL)
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Q157
PHYSICS
Unit 7: Properties of Solids and Liquids
A wire of length L and area of cross section A is hanging from a fixed support. The length of the wire changes to L1 when mass M is suspended from its free end. The expression for Young’s modulus is:
↻ Repeated question — also appeared in
2020 (8 sets)
- A. MgL / [A(L1 - L)]
- B. MgL / (AL1)
- C. Mg(L1 - L) / (AL)
- D. MgL / (AL)
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Q158
PHYSICS
Unit 12: Current Electricity
A charged particle having drift velocity of 7.5 × 10⁻⁴ m s⁻¹ in an electric field of 3 × 10⁻¹⁰ V m⁻¹, has a mobility in m² V⁻¹ s⁻¹ of:
↻ Repeated question — also appeared in
2020 (4 sets)
- A. 2.25 × 10⁻¹⁵
- B. 2.25 × 10¹⁵
- C. 2.5 × 10⁶
- D. 2.5 × 10⁻⁶
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Q158
PHYSICS
Unit 12: Current Electricity
A charged particle having drift velocity of 7.5 × 10^-4 m s^-1 in an electric field of 3 × 10^-10 V m^-1 has a mobility in m^2 V^-1 s^-1 of:
↻ Repeated question — also appeared in
2020 (4 sets)
- A. 2.25 × 10^15
- B. 2.25 × 10^-15
- C. 2.5 × 10^-6
- D. 2.5 × 10^6
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Q159
PHYSICS
Unit 16: Optics
Assume that light of wavelength 600 nm is coming from a star. The limit of resolution of telescope whose objective has a diameter of 2 m is:
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 6.00 × 10⁻⁷ rad
- B. 3.66 × 10⁻⁷ rad
- C. 1.83 × 10⁻⁷ rad
- D. 7.32 × 10⁻⁷ rad
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Q159
PHYSICS
Unit 16: Optics
Assume that light of wavelength 600 nm is coming from a star. The limit of resolution of a telescope whose objective has a diameter of 2 m is:
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 6.00 × 10^-7 rad
- B. 3.66 × 10^-7 rad
- C. 1.83 × 10^-7 rad
- D. 7.32 × 10^-7 rad
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Q160
PHYSICS
Unit 5: Rotational Motion
Find the torque about the origin when a force of 3 N ĵ acts on a particle whose position vector is 2 m k̂.
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 6 N m k̂
- B. 6 N m î
- C. 6 N m ĵ
- D. −6 N m î
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Q160
PHYSICS
Unit 5: Rotational Motion
Find the torque about the origin when a force of 3 N ĵ acts on a particle whose position vector is 2 m k̂.
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 6 N m k̂
- B. 6 N m î
- C. 6 N m ĵ
- D. -6 N m î
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Q161
PHYSICS
Unit 15: Electromagnetic Waves
Light with an average flux of 20 W/cm^2 falls on a non-reflecting surface at normal incidence having surface area 20 cm^2. The energy received by the surface during time span of 1 minute is:
↻ Repeated question — also appeared in
2020 (4 sets)
- A. 48 × 10^3 J
- B. 10 × 10^3 J
- C. 12 × 10^3 J
- D. 24 × 10^3 J
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Q162
PHYSICS
Unit 20: Experimental Skills
A screw gauge has least count of 0.01 mm and there are 50 divisions in its circular scale. The pitch of the screw gauge is:
↻ Repeated question — also appeared in
2020 (6 sets)
- A. 1.0 mm
- B. 0.01 mm
- C. 0.25 mm
- D. 0.5 mm
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Q163
PHYSICS
Unit 11: Electrostatics
The capacitance of a parallel plate capacitor with air as medium is 6 µF. With the introduction of a dielectric medium, the capacitance becomes 30 µF. The permittivity of the medium is: (ε0 = 8.85 × 10^-12 C^2 N^-1 m^-2)
↻ Repeated question — also appeared in
2020 (7 sets)
- A. 5.00 C^2 N^-1 m^-2
- B. 0.44 × 10^-13 C^2 N^-1 m^-2
- C. 1.77 × 10^-12 C^2 N^-1 m^-2
- D. 0.44 × 10^-10 C^2 N^-1 m^-2
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Q164
CHEMISTRY
Unit 1: Some Basic Concepts in Chemistry
The energy equivalent of 0.5 g of a substance is:
↻ Repeated question — also appeared in
2020 (2 sets)
- A. 0.5 × 10^13 J
- B. 4.5 × 10^16 J
- C. 4.5 × 10^13 J
- D. 1.5 × 10^13 J
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Q165
PHYSICS
Unit 6: Gravitation
A body weighs 72 N on the surface of the earth. What is the gravitational force on it, at a height equal to half the radius of the earth?
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 24 N
- B. 48 N
- C. 32 N
- D. 30 N
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Q166
PHYSICS
Unit 2: Kinematics
A ball is thrown vertically downward with a velocity of 20 m/s from the top of a tower. It hits the ground after some time with a velocity of 80 m/s. The height of the tower is: (g = 10 m/s^2)
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 300 m
- B. 360 m
- C. 340 m
- D. 320 m
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Q167
PHYSICS
Unit 7: Properties of Solids and Liquids
A capillary tube of radius r is immersed in water and water rises in it to a height h. The mass of the water in the capillary is 5 g. Another capillary tube of radius 2r is immersed in water. The mass of water that will rise in this tube is:
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 20.0 g
- B. 2.5 g
- C. 5.0 g
- D. 10.0 g
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Q168
PHYSICS
Unit 10: Oscillations and Waves
In a guitar, two strings A and B made of same material are slightly out of tune and produce beats of frequency 6 Hz. When tension in B is slightly decreased, the beat frequency increases to 7 Hz. If the frequency of A is 530 Hz, the original frequency of B will be:
↻ Repeated question — also appeared in
2020 (7 sets)
- A. 537 Hz
- B. 523 Hz
- C. 524 Hz
- D. 536 Hz
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Q169
PHYSICS
Unit 11: Electrostatics
The increase in the width of the depletion region in a p-n junction diode is due to:
- A. increase in forward current
- B. forward bias only
- C. reverse bias only
- D. both forward bias and reverse bias
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Q170
PHYSICS
Unit 1: Physics and Measurement
Dimensions of stress are:
↻ Repeated question — also appeared in
2020 (6 sets)
- A. [M L^-1 T^-2]
- B. [M L T^-2]
- C. [M L^2 T^-2]
- D. [M L^0 T^-2]
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Q171
PHYSICS
Unit 11: Electrostatics
A short electric dipole has a dipole moment of 16 × 10^-9 C m. The electric potential due to the dipole at a point at a distance of 0.6 m from the centre of the dipole, situated on a line making an angle of 60° with the dipole axis is: (1/4πε0 = 9 × 10^9 N m^2/C^2)
↻ Repeated question — also appeared in
2020 (8 sets)
- A. zero
- B. 50 V
- C. 200 V
- D. 400 V
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Q172
PHYSICS
Unit 10: Oscillations and Waves
The phase difference between displacement and acceleration of a particle in a simple harmonic motion is:
↻ Repeated question — also appeared in
2020 (8 sets)
- A. zero
- B. π rad
- C. 3π/2 rad
- D. π/2 rad
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Q173
PHYSICS
Unit 10: Oscillations and Waves
A 40 µF capacitor is connected to a 200 V, 50 Hz ac supply. The rms value of the current in the circuit is, nearly:
- A. 25.1 A
- B. 1.7 A
- C. 2.05 A
- D. 2.5 A
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Q174
PHYSICS
Unit 13: Magnetic Effects of Current and Magnetism
An iron rod of susceptibility 599 is subjected to a magnetising field of 1200 A m^-1. The permeability of the material of the rod is: (µ0 = 4π × 10^-7 T m A^-1)
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 2.4π × 10^-7 T m A^-1
- B. 2.4π × 10^-4 T m A^-1
- C. 8.0 × 10^-5 T m A^-1
- D. 2.4π × 10^-5 T m A^-1
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Q174
PHYSICS
Unit 13: Magnetic Effects of Current and Magnetism
An iron rod of susceptibility 599 is subjected to a magnetising field of 1200 A m^-1. The permeability of the material of the rod is:
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 2.4π × 10^-7 T m A^-1
- B. 2.4π × 10^-4 T m A^-1
- C. 8.0 × 10^-5 T m A^-1
- D. 2.4π × 10^-5 T m A^-1
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Q175
PHYSICS
Unit 16: Optics
The Brewster's angle i_b for an interface should be:
↻ Repeated question — also appeared in
2020 (9 sets)
- A. i_b = 90°
- B. 0° < i_b < 30°
- C. 30° < i_b < 45°
- D. 45° < i_b < 90°
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Q175
PHYSICS
Unit 16: Optics
The Brewster's angle ib for an interface should be:
↻ Repeated question — also appeared in
2020 (9 sets)
- A. ib = 90°
- B. 0° < ib < 30°
- C. 30° < ib < 45°
- D. 45° < ib < 90°
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Q176
PHYSICS
Unit 13: Magnetic Effects of Current and Magnetism
A long solenoid of 50 cm length having 100 turns carries a current of 2.5 A. The magnetic field at the centre of the solenoid is: (µ0 = 4π × 10^-7 T m A^-1)
↻ Repeated question — also appeared in
2020 (9 sets)
- A. 3.14 × 10^-5 T
- B. 6.28 × 10^-4 T
- C. 3.14 × 10^-4 T
- D. 6.28 × 10^-5 T
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Q176
PHYSICS
Unit 13: Magnetic Effects of Current and Magnetism
A long solenoid of 50 cm length having 100 turns carries a current of 2.5 A. The magnetic field at the centre of the solenoid is: (μ0 = 4π × 10^-7 T m A^-1)
↻ Repeated question — also appeared in
2020 (9 sets)
- A. 3.14 × 10^-5 T
- B. 6.28 × 10^-4 T
- C. 3.14 × 10^-4 T
- D. 6.28 × 10^-5 T
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Q177
PHYSICS
Unit 19: Electronic Devices
For the logic circuit shown, the truth table is:
↻ Repeated question — also appeared in
2020 (5 sets)
- A. A B Y 0 0 1 0 1 0 1 0 0 1 1 0
- B. A B Y 0 0 0 0 1 0 1 0 0 1 1 1
- C. A B Y 0 0 0 0 1 1 1 0 1 1 1 1
- D. A B Y 0 0 1 0 1 1 1 0 1 1 1 0
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Q178
PHYSICS
Unit 9: Kinetic Theory of Gases
The average thermal energy for a mono-atomic gas is: (k_B is Boltzmann constant and T, absolute temperature)
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 7/2 k_B T
- B. 1/2 k_B T
- C. 3/2 k_B T
- D. 5/2 k_B T
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Q178
PHYSICS
Unit 9: Kinetic Theory of Gases
The average thermal energy for a mono-atomic gas is: (kB is Boltzmann constant and T, absolute temperature)
↻ Repeated question — also appeared in
2020 (8 sets)
- A. 7/2 kB T
- B. 1/2 kB T
- C. 3/2 kB T
- D. 5/2 kB T
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Q179
PHYSICS
Unit 18: Atoms and Nuclei
The energy required to break one bond in DNA is 10^-20 J. This value in eV is nearly:
↻ Repeated question — also appeared in
2020 (6 sets)
- A. 0.006
- B. 6
- C. 0.6
- D. 0.06
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Q180
PHYSICS
Unit 9: Kinetic Theory of Gases
A cylinder contains hydrogen gas at pressure of 249 kPa and temperature 27°C. Its density is: (R = 8.3 J mol^-1 K^-1)
↻ Repeated question — also appeared in
2020 (7 sets)
- A. 0.02 kg/m^3
- B. 0.5 kg/m^3
- C. 0.2 kg/m^3
- D. 0.1 kg/m^3
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