Q1
CHEMISTRY
Unit 4: Chemical Thermodynamics
The bond dissociation energies of X2, Y2 and XY are in the ratio of 1 : 0.5 : 1. ΔH for the formation of XY is – 200 kJ mol–1. The bond dissociation energy of X2 will be
↻ Repeated question — also appeared in
2018 (12 sets)
- A. 400 kJ mol–1
- B. 200 kJ mol–1
- C. 800 kJ mol–1
- D. 100 kJ mol–1
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Q2
CHEMISTRY
Unit 8: Chemical Kinetics
When initial concentration of the reactant is doubled, the half-life period of a zero order reaction
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2018 (15 sets)
- A. remains unchanged
- B. is halved
- C. is tripled
- D. is doubled
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Q3
PHYSICS
Unit 9: Kinetic Theory of Gases
The correction factor ‘a’ to the ideal gas equation corresponds to
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2018 (10 sets)
- A. forces of attraction between the gas molecules
- B. density of the gas molecules
- C. electric field present between the gas molecules
- D. volume of the gas molecules
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Q4
CHEMISTRY
Unit 6: Equilibrium
Which one of the following conditions will favour maximum formation of the product in the reaction, A2(g) + B2(g) ⇌ 2X2(g) ΔrH = – X kJ ?
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2018 (12 sets)
- A. High temperature and low pressure
- B. Low temperature and high pressure
- C. High temperature and high pressure
- D. Low temperature and low pressure
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Q5
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
For the redox reaction MnO4- + C2O4 2- + H+ -> Mn2+ + CO2 + H2O, the correct coefficients of the reactants for the balanced equation are (MnO4-, C2O4 2-, H+)
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2018 (8 sets)
- A. 5, 16, 2
- B. 16, 5, 2
- C. 2, 16, 5
- D. 2, 5, 16
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Q7
CHEMISTRY
Unit 17: Organic Compounds Containing Oxygen
Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to their
↻ Repeated question — also appeared in
2018 (14 sets)
- A. formation of intermolecular H-bonding
- B. formation of intramolecular H-bonding
- C. more extensive association of carboxylic acid via van der Waals force of attraction
- D. formation of carboxylate ion
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Q7
CHEMISTRY
Unit 17: Organic Compounds Containing Oxygen
Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecular mass. It is due to their
↻ Repeated question — also appeared in
2018 (14 sets)
- A. formation of intermolecular H-bonding
- B. formation of intramolecular H-bonding
- C. more extensive association of carboxylic acid via van der Waals force of attraction
- D. formation of carboxylate ion
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Q9
CHEMISTRY
Unit 8: Chemical Kinetics
The correct difference between first- and second-order reactions is that
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2018 (15 sets)
- A. the rate of a first-order reaction does depend on reactant concentrations; the rate of a second-order reaction does not depend on reactant concentrations
- B. the rate of a first-order reaction does not depend on reactant concentrations; the rate of a second-order reaction does depend on reactant concentrations
- C. a first-order reaction can be catalyzed; a second-order reaction cannot be catalyzed
- D. the half-life of a first-order reaction does not depend on [A]0; the half-life of a second-order reaction does depend on [A]0
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Q11
CHEMISTRY
Unit 9: Classification of Elements and Periodicity in Properties
Among CaH2, BeH2, BaH2, the order of ionic character is
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2018 (2 sets)
- A. BaH2 < BeH2 < CaH2
- B. BeH2 < CaH2 < BaH2
- C. BeH2 < BaH2 < CaH2
- D. CaH2 < BeH2 < BaH2
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Q12
CHEMISTRY
Unit 1: Some Basic Concepts in Chemistry
In which case is the number of molecules of water maximum?
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2018 (15 sets)
- A. 10^-3 mol of water
- B. 18 mL of water
- C. 0.00224 L of water vapours at 1 atm and 273 K
- D. 0.18 g of water
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Q13
CHEMISTRY
Unit 19: Biomolecules
The difference between amylose and amylopectin is
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2018 (14 sets)
- A. Amylose is made up of glucose and galactose
- B. Amylopectin have 1->4 alpha-linkage and 1->6 alpha-linkage
- C. Amylopectin have 1->4 alpha-linkage and 1->6 beta-linkage
- D. Amylose have 1->4 alpha-linkage and 1->6 beta-linkage
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Q14
CHEMISTRY
Unit 18: Organic Compounds Containing Nitrogen
Nitration of aniline in strong acidic medium also gives m-nitroaniline because
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2018 (12 sets)
- A. In acidic (strong) medium aniline is present as anilinium ion.
- B. In spite of substituents nitro group always goes to only m-position.
- C. In absence of substituents nitro group always goes to m-position.
- D. In electrophilic substitution reactions amino group is meta directive.
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Q15
CHEMISTRY
Unit 10: p-Block Elements
Which of the following oxides is most acidic in nature?
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2018 (7 sets)
- A. CaO
- B. MgO
- C. BaO
- D. BeO
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Q17
CHEMISTRY
Unit 14: Some Basic Principles of Organic Chemistry
Regarding cross-linked or network polymers, which of the following statements is incorrect?
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2018 (7 sets)
- A. They contain strong covalent bonds in their polymer chains.
- B. They contain covalent bonds between various linear polymer chains.
- C. Examples are bakelite and melamine.
- D. They are formed from bi- and tri-functional monomers.
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Q18
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
Magnesium reacts with an element (X) to form an ionic compound. If the ground state electronic configuration of (X) is 1s2 2s2 2p3, the simplest formula for this compound is
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2018 (13 sets)
- A. Mg3X2
- B. Mg2X3
- C. Mg2X
- D. MgX2
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Q20
CHEMISTRY
Unit 2: Atomic Structure
Which one is a wrong statement?
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2018 (11 sets)
- A. The value of m for 2z^2d is zero.
- B. Total orbital angular momentum of electron in 's' orbital is equal to zero.
- C. The electronic configuration of N atom is
- D. An orbital is designated by three quantum numbers while an electron in an atom is designated by four quantum numbers.
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Q20
CHEMISTRY
Unit 2: Atomic Structure
Which one is a wrong statement?
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2018 (11 sets)
- A. The value of m for 2pz orbital is zero.
- B. Total orbital angular momentum of electron in 's' orbital is equal to zero.
- C. The electronic configuration of N atom is [He] 2s2 2px1 2py1 2pz1.
- D. An orbital is designated by three quantum numbers while an electron in an atom is designated by four quantum numbers.
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Q21
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
Consider the following species: CN+, CN-, NO and CN. Which one of these will have the highest bond order?
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2018 (14 sets)
- A. CN
- B. NO
- C. CN+
- D. CN-
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Q21
CHEMISTRY
Unit 3: Chemical Bonding and Molecular Structure
Consider the following species: CN+, CN-, NO and CN. Which one of these will have the highest bond order?
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2018 (14 sets)
- A. CN
- B. NO
- C. CN+
- D. CN-
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Q22
CHEMISTRY
Unit 6: Equilibrium
Following solutions were prepared by mixing different volumes of NaOH and HCl of different concentrations: a. 60 mL 10^-1 M HCl + 40 mL 10^-1 M NaOH, b. 55 mL 10^-1 M HCl + 45 mL 10^-1 M NaOH, c. 75 mL 5 x 10^-2 M HCl + 25 mL 5 x 10^-2 M HCl, d. 100 mL 10^-1 M HCl + 100 mL 10^-1 M NaOH. pH of which one of them will be equal to 1?
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2018 (10 sets)
- A. c
- B. b
- C. d
- D. a
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Q23
CHEMISTRY
Unit 6: Equilibrium
The solubility of BaSO4 in water is 2.42 x 10^-3 gL^-1 at 298 K. The value of its solubility product (Ksp) will be (Given molar mass of BaSO4 = 233 g mol^-1)
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2018 (13 sets)
- A. 1.08 x 10^-8 mol2 L^-2
- B. 1.08 x 10^-10 mol2 L^-2
- C. 1.08 x 10^-14 mol2 L^-2
- D. 1.08 x 10^-12 mol2 L^-2
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Q24
CHEMISTRY
Unit 5: Solutions
On which of the following properties does the coagulating power of an ion depend?
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2018 (5 sets)
- A. The sign of charge on the ion alone
- B. The magnitude of the charge on the ion alone
- C. Both magnitude and sign of the charge on the ion
- D. Size of the ion alone
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Q25
PHYSICS
Unit 9: Kinetic Theory of Gases
Given van der Waals constant for NH3, H2, O2 and CO2 are respectively 4.17, 0.244, 1.36 and 3.59, which one of the following gases is most easily liquefied?
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2018 (9 sets)
- A. CO2
- B. NH3
- C. O2
- D. H2
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Q26
CHEMISTRY
Unit 12: Coordination Compounds
The geometry and magnetic behaviour of the complex [Ni(CO)4] are
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2018 (15 sets)
- A. tetrahedral geometry and paramagnetic
- B. square planar geometry and diamagnetic
- C. square planar geometry and paramagnetic
- D. tetrahedral geometry and diamagnetic
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Q27
CHEMISTRY
Unit 12: Coordination Compounds
Iron carbonyl, Fe(CO)5 is
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2018 (14 sets)
- A. dinuclear
- B. tetranuclear
- C. trinuclear
- D. mononuclear
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Q28
CHEMISTRY
Unit 12: Coordination Compounds
Match the metal ions given in Column I with the spin magnetic moments of the ions given in Column II and assign the correct code.
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2018 (2 sets)
- A. iii v i ii
- B. iv v ii i
- C. iv i ii iii
- D. i ii iii iv
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Q29
CHEMISTRY
Unit 12: Coordination Compounds
The type of isomerism shown by the complex [CoCl2(en)2] is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. Linkage isomerism
- B. Geometrical isomerism
- C. Ionization isomerism
- D. Coordination isomerism
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Q30
CHEMISTRY
Unit 11: d- and f-Block Elements
Which one of the following ions exhibits d-d transition and paramagnetism as well?
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2018 (8 sets)
- A. MnO4^2-
- B. CrO4^2-
- C. MnO4^-
- D. Cr2O7^2-
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Q31
CHEMISTRY
Unit 17: Organic Compounds Containing Oxygen
The compound A on treatment with Na gives B, and with PCl5 gives C. B and C react together to give diethyl ether. A, B and C are in the order
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2018 (13 sets)
- A. C2H5OH, C2H5ONa, C2H5Cl
- B. C2H5OH, C2H6, C2H5Cl
- C. C2H5Cl, C2H6, C2H5OH
- D. C2H5OH, C2H5Cl, C2H5ONa
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Q33
CHEMISTRY
Unit 15: Hydrocarbons
Hydrocarbon (A) reacts with bromine by substitution to form an alkyl bromide which by Wurtz reaction is converted to gaseous hydrocarbon containing less than four carbon atoms. (A) is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. CH4
- B. CH triple bond CH
- C. CH3 - CH3
- D. CH2 = CH2
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Q34
BIOLOGY
Unit 10: Ecology and Environment
Which oxide of nitrogen is not a common pollutant introduced into the atmosphere both due to natural and human activity?
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2018 (6 sets)
- A. NO
- B. N2O5
- C. N2O
- D. NO2
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Q37
CHEMISTRY
Unit 14: Some Basic Principles of Organic Chemistry
Which of the following molecules represents the order of hybridisation sp2, sp2, sp, sp from left to right atoms?
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2018 (11 sets)
- A. CH3 – CH = CH – CH3
- B. HC ≡ C – C ≡ CH
- C. CH2 = CH – CH = CH2
- D. CH2 = CH – C ≡ CH
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Q39
CHEMISTRY
Unit 14: Some Basic Principles of Organic Chemistry
Which of the following is correct with respect to – I effect of the substituents ? (R = alkyl)
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2018 (13 sets)
- A. – NR2 > – OR > – F
- B. – NH2 < – OR < – F
- C. – NH2 > – OR > – F
- D. – NR2 < – OR < – F
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Q40
CHEMISTRY
Unit 10: p-Block Elements
Which of the following statements is not true for halogens?
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2018 (15 sets)
- A. Chlorine has the highest electron-gain enthalpy.
- B. All form monobasic oxyacids.
- C. All but fluorine show positive oxidation states.
- D. All are oxidizing agents.
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Q41
CHEMISTRY
Unit 11: d- and f-Block Elements
Considering Ellingham diagram, which of the following metals can be used to reduce alumina?
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2018 (9 sets)
- A. Cu
- B. Fe
- C. Mg
- D. Zn
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Q42
CHEMISTRY
Unit 10: p-Block Elements
The correct order of atomic radii in group 13 elements is
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2018 (5 sets)
- A. B < Ga < Al < In < Tl
- B. B < Al < In < Ga < Tl
- C. B < Ga < Al < Tl < In
- D. B < Al < Ga < In < Tl
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Q43
CHEMISTRY
Unit 10: p-Block Elements
In the structure of ClF3, the number of lone pairs of electrons on central atom ‘Cl’ is
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2018 (3 sets)
- A. three
- B. one
- C. four
- D. two
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Q44
CHEMISTRY
Unit 7: Redox Reactions and Electrochemistry
The correct order of N-compounds in its decreasing order of oxidation states is
↻ Repeated question — also appeared in
2018 (5 sets)
- A. NH4Cl, N2, NO, HNO3
- B. HNO3, NO, N2, NH4Cl
- C. HNO3, NH4Cl, NO, N2
- D. HNO3, NO, NH4Cl, N2
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Q45
CHEMISTRY
Unit 10: p-Block Elements
Which one of the following elements is unable to form –3 6 MF ion ?
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2018 (14 sets)
- A. In
- B. Ga
- C. B
- D. Al
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Q46
BIOLOGY
Unit 5: Human Physiology
Which of the following options correctly represents the lung conditions in asthma and emphysema, respectively?
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2018 (14 sets)
- A. Decreased respiratory surface; Inflammation of bronchioles
- B. Inflammation of bronchioles; Decreased respiratory surface
- C. Increased respiratory surface; Inflammation of bronchioles
- D. Increased number of bronchioles; Increased respiratory surface
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Q47
BIOLOGY
Unit 5: Human Physiology
Match the items given in Column I with those in Column II and select the correct option given below:
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2018 (3 sets)
- A. ii i iii
- B. iii i ii
- C. i ii iii
- D. i iii ii
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Q49
BIOLOGY
Unit 5: Human Physiology
The transparent lens in the human eye is held in its place by
↻ Repeated question — also appeared in
2018 (15 sets)
- A. smooth muscles attached to the ciliary body
- B. ligaments attached to the ciliary body
- C. smooth muscles attached to the iris
- D. ligaments attached to the iris
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Q50
BIOLOGY
Unit 5: Human Physiology
Which of the following is an amino acid derived hormone?
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2018 (15 sets)
- A. Estriol
- B. Epinephrine
- C. Estradiol
- D. Ecdysone
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Q51
BIOLOGY
Unit 5: Human Physiology
Which of the following structures or regions is incorrectly paired with its function?
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2018 (13 sets)
- A. Corpus callosum : band of fibers connecting left and right cerebral hemispheres.
- B. Medulla oblongata : controls respiration and cardiovascular reflexes.
- C. Hypothalamus : production of releasing hormones and regulation of temperature, hunger and thirst.
- D. Limbic system : consists of fibre tracts that interconnect different regions of brain; controls movement.
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Q52
BIOLOGY
Unit 5: Human Physiology
Which of the following hormones can play a significant role in osteoporosis?
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2018 (15 sets)
- A. Parathyroid hormone and Prolactin
- B. Aldosterone and Prolactin
- C. Estrogen and Parathyroid hormone
- D. Progesterone and Aldosterone
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Q53
BIOLOGY
Unit 7: Genetics and Evolution
AGGTATCGCAT is a sequence from the coding strand of a gene. What will be the corresponding sequence of the transcribed mRNA?
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2018 (15 sets)
- A. UCCAUAGCGUA
- B. AGGUAUCGCAU
- C. ACCUAUGCGAU
- D. UGGTUTCGCAT
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Q53
BIOLOGY
Unit 7: Genetics and Evolution
AGGTATCGCAT is a sequence from the coding strand of a gene. What will be the corresponding sequence of the transcribed mRNA?
↻ Repeated question — also appeared in
2018 (15 sets)
- A. UCCAUAGCGUA
- B. AGGUAUCGCAU
- C. ACCUAUGCGAU
- D. UGGTUTCGCAT
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Q54
BIOLOGY
Unit 6: Reproduction
Match the items given in Column I with those in Column II and select the correct option given below:
Column I: a. Proliferative Phase, b. Secretory Phase, c. Menstruation
Column II: i. Breakdown of endometrial lining, ii. Follicular Phase, iii. Luteal Phase
↻ Repeated question — also appeared in
2018 (9 sets)
- A. (1) iii i ii
- B. (2) iii ii i
- C. (3) ii iii i
- D. (4) i iii ii
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Q55
BIOLOGY
Unit 7: Genetics and Evolution
All of the following are part of an operon except
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2018 (13 sets)
- A. a promoter
- B. an operator
- C. an enhancer
- D. structural genes
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Q55
BIOLOGY
Unit 7: Genetics and Evolution
All of the following are part of an operon except
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2018 (13 sets)
- A. a promoter
- B. an operator
- C. an enhancer
- D. structural genes
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Q56
BIOLOGY
Unit 7: Genetics and Evolution
According to Hugo de Vries, the mechanism of evolution is
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2018 (16 sets)
- A. Minor mutations
- B. Multiple step mutations
- C. Phenotypic variations
- D. Saltation
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Q56
BIOLOGY
Unit 7: Genetics and Evolution
According to Hugo de Vries, the mechanism of evolution is
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2018 (16 sets)
- A. Minor mutations
- B. Multiple step mutations
- C. Phenotypic variations
- D. Saltation
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Q57
BIOLOGY
Unit 7: Genetics and Evolution
A woman has an X-linked condition on one of her X chromosomes. This chromosome can be inherited by
↻ Repeated question — also appeared in
2018 (16 sets)
- A. Both sons and daughters
- B. Only daughters
- C. Only grandchildren
- D. Only sons
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Q57
BIOLOGY
Unit 7: Genetics and Evolution
A woman has an X-linked condition on one of her X chromosomes. This chromosome can be inherited by
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2018 (16 sets)
- A. Both sons and daughters
- B. Only daughters
- C. Only grandchildren
- D. Only sons
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Q58
BIOLOGY
Unit 8: Biology and Human Welfare
In which disease does mosquito transmitted pathogen cause chronic inflammation of lymphatic vessels?
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2018 (9 sets)
- A. Amoebiasis
- B. Elephantiasis
- C. Ringworm disease
- D. Ascariasis
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Q59
BIOLOGY
Unit 7: Genetics and Evolution
Among the following sets of examples for divergent evolution, select the incorrect option:
↻ Repeated question — also appeared in
2018 (13 sets)
- A. Eye of octopus, bat and man
- B. Forelimbs of man, bat and cheetah
- C. Brain of bat, man and cheetah
- D. Heart of bat, man and cheetah
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Q60
BIOLOGY
Unit 8: Biology and Human Welfare
Conversion of milk to curd improves its nutritional value by increasing the amount of
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2018 (13 sets)
- A. Vitamin E
- B. Vitamin D
- C. Vitamin B12
- D. Vitamin A
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Q61
BIOLOGY
Unit 8: Biology and Human Welfare
Which of the following is not an autoimmune disease?
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- A. Vitiligo
- B. Psoriasis
- C. Alzheimer’s disease
- D. Rheumatoid arthritis
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Q62
BIOLOGY
Unit 7: Genetics and Evolution
The similarity of bone structure in the forelimbs of many vertebrates is an example of
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2018 (14 sets)
- A. Adaptive radiation
- B. Homology
- C. Convergent evolution
- D. Analogy
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Q63
BIOLOGY
Unit 7: Genetics and Evolution
Which of the following characteristics represent ‘Inheritance of blood groups’ in humans?
a. Dominance, b. Co-dominance, c. Multiple allele, d. Incomplete dominance, e. Polygenic inheritance
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2018 (13 sets)
- A. a, c and e
- B. b, c and e
- C. b, d and e
- D. a, b and c
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Q64
BIOLOGY
Unit 10: Ecology and Environment
Match the items given in Column I with those in Column II and select the correct option given below:
Column I: a. Eutrophication, b. Sanitary landfill, c. Snow blindness, d. Jhum cultivation
Column II: i. UV-B radiation, ii. Deforestation, iii. Nutrient enrichment, iv. Waste disposal
↻ Repeated question — also appeared in
2018 (11 sets)
- A. (1) i ii iv iii
- B. (2) ii i iii iv
- C. (3) iii iv i ii
- D. (4) i iii iv ii
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Q65
BIOLOGY
Unit 10: Ecology and Environment
All of the following are included in ‘Ex-situ conservation’ except
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2018 (15 sets)
- A. Seed banks
- B. Wildlife safari parks
- C. Botanical gardens
- D. Sacred groves
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Q66
BIOLOGY
Unit 10: Ecology and Environment
Which one of the following population interactions is widely used in medical science for the production of antibiotics?
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2018 (12 sets)
- A. Amensalism
- B. Commensalism
- C. Parasitism
- D. Mutualism
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Q67
BIOLOGY
Unit 10: Ecology and Environment
In a growing population of a country,
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2018 (15 sets)
- A. pre-reproductive individuals are less than the reproductive individuals.
- B. pre-reproductive individuals are more than the reproductive individuals.
- C. reproductive and pre-reproductive individuals are equal in number.
- D. reproductive individuals are less than the post-reproductive individuals.
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Q68
BIOLOGY
Unit 8: Biology and Human Welfare
Which part of poppy plant is used to obtain the drug ‘Smack’?
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2018 (13 sets)
- A. Leaves
- B. Flowers
- C. Roots
- D. Latex
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Q69
BIOLOGY
Unit 6: Reproduction
Hormones secreted by the placenta to maintain pregnancy are
↻ Repeated question — also appeared in
2018 (13 sets)
- A. hCG, progestogens, estrogens, glucocorticoids
- B. hCG, hPL, progestogens, prolactin
- C. hCG, hPL, progestogens, estrogens
- D. hCG, hPL, estrogens, relaxin, oxytocin
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Q70
BIOLOGY
Unit 6: Reproduction
The amnion of mammalian embryo is derived from
↻ Repeated question — also appeared in
2018 (15 sets)
- A. ectoderm and endoderm
- B. ectoderm and mesoderm
- C. mesoderm and trophoblast
- D. endoderm and mesoderm
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Q70
BIOLOGY
Unit 6: Reproduction
The amnion of mammalian embryo is derived from
↻ Repeated question — also appeared in
2018 (15 sets)
- A. ectoderm and endoderm
- B. ectoderm and mesoderm
- C. mesoderm and trophoblast
- D. endoderm and mesoderm
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Q71
BIOLOGY
Unit 6: Reproduction
The contraceptive ‘SAHELI’
↻ Repeated question — also appeared in
2018 (13 sets)
- A. is a post-coital contraceptive.
- B. blocks estrogen receptors in the uterus, preventing eggs from getting implanted.
- C. is an IUD.
- D. increases the concentration of estrogen and prevents ovulation in females.
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Q71
BIOLOGY
Unit 6: Reproduction
The contraceptive ‘SAHELI’
↻ Repeated question — also appeared in
2018 (13 sets)
- A. is a post-coital contraceptive.
- B. blocks estrogen receptors in the uterus, preventing eggs from getting implanted.
- C. is an IUD.
- D. increases the concentration of estrogen and prevents ovulation in females.
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Q72
BIOLOGY
Unit 6: Reproduction
The difference between spermiogenesis and spermiation is
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2018 (15 sets)
- A. In spermiogenesis spermatozoa are formed, while in spermiation spermatozoa are released from sertoli cells into the cavity of seminiferous tubules.
- B. In spermiogenesis spermatids are formed, while in spermiation spermatozoa are formed.
- C. In spermiogenesis spermatozoa from sertoli cells are released into the cavity of seminiferous tubules, while in spermiation spermatozoa are formed.
- D. In spermiogenesis spermatozoa are formed, while in spermiation spermatids are formed.
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Q72
BIOLOGY
Unit 6: Reproduction
The difference between spermiogenesis and spermiation is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. In spermiogenesis spermatozoa are formed, while in spermiation spermatozoa are released from sertoli cells into the cavity of seminiferous tubules.
- B. In spermiogenesis spermatids are formed, while in spermiation spermatozoa are formed.
- C. In spermiogenesis spermatozoa from sertoli cells are released into the cavity of seminiferous tubules, while in spermiation spermatozoa are formed.
- D. In spermiogenesis spermatozoa are formed, while in spermiation spermatids are formed.
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Q73
BIOLOGY
Unit 5: Human Physiology
Match the items given in Column I with those in Column II and select the correct option given below:
Column I: a. Glycosuria, b. Gout, c. Renal calculi, d. Glomerular nephritis
Column II: i. Accumulation of uric acid in joints, ii. Mass of crystallised salts within the kidney, iii. Inflammation in glomeruli, iv. Presence of glucose in urine
↻ Repeated question — also appeared in
2018 (9 sets)
- A. iv i ii iii
- B. iii ii iv i
- C. ii iii i iv
- D. i ii iii iv
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Q74
BIOLOGY
Unit 5: Human Physiology
Match the items given in Column I with those in Column II and select the correct option given below:
Column I (Function): a. Ultrafiltration, b. Concentration of urine, c. Transport of urine, d. Storage of urine
Column II (Part of Excretory System): i. Henle’s loop, ii. Ureter, iii. Urinary bladder, iv. Malpighian corpuscle, v. Proximal convoluted tubule
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2018 (8 sets)
- A. v iv i iii
- B. iv v ii iii
- C. v iv i ii
- D. iv i ii iii
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Q75
BIOLOGY
Unit 5: Human Physiology
Which of the following gastric cells indirectly help in erythropoiesis?
↻ Repeated question — also appeared in
2018 (15 sets)
- A. Parietal cells
- B. Chief cells
- C. Goblet cells
- D. Mucous cells
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Q76
BIOLOGY
Unit 5: Human Physiology
Match the items given in Column I with those in Column II and select the correct option given below:
Column I: a. Fibrinogen, b. Globulin, c. Albumin
Column II: i. Osmotic balance, ii. Blood clotting, iii. Defence mechanism
↻ Repeated question — also appeared in
2018 (10 sets)
- A. ii iii i
- B. iii ii i
- C. i iii ii
- D. i ii iii
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Q77
BIOLOGY
Unit 5: Human Physiology
Which of the following is an occupational respiratory disorder?
↻ Repeated question — also appeared in
2018 (14 sets)
- A. Emphysema
- B. Anthracis
- C. Botulism
- D. Silicosis
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Q78
BIOLOGY
Unit 5: Human Physiology
Calcium is important in skeletal muscle contraction because it
↻ Repeated question — also appeared in
2018 (15 sets)
- A. prevents the formation of bonds between the myosin cross bridges and the actin filament.
- B. binds to troponin to remove the masking of active sites on actin for myosin.
- C. detaches the myosin head from the actin filament.
- D. activates the myosin ATPase by binding to it.
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Q79
BIOLOGY
Unit 3: Cell Structure and Function
Which of the following events does not occur in rough endoplasmic reticulum?
↻ Repeated question — also appeared in
2018 (13 sets)
- A. Phospholipid synthesis
- B. Protein folding
- C. Cleavage of signal peptide
- D. Protein glycosylation
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Q80
BIOLOGY
Unit 3: Cell Structure and Function
Many ribosomes may associate with a single mRNA to form multiple copies of a polypeptide simultaneously. Such strings of ribosomes are termed as
↻ Repeated question — also appeared in
2018 (14 sets)
- A. Nucleosome
- B. Polysome
- C. Plastidome
- D. Polyhedral bodies
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Q81
BIOLOGY
Unit 3: Cell Structure and Function
Nissl bodies are mainly composed of
↻ Repeated question — also appeared in
2018 (10 sets)
- A. Free ribosomes and RER
- B. Proteins and lipids
- C. Nucleic acids and SER
- D. DNA and RNA
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Q82
BIOLOGY
Unit 4: Plant Physiology
Which of these statements is incorrect?
↻ Repeated question — also appeared in
2018 (11 sets)
- A. Oxidative phosphorylation takes place in outer mitochondrial membrane.
- B. Enzymes of TCA cycle are present in mitochondrial matrix.
- C. Glycolysis operates as long as it is supplied with NAD that can pick up hydrogen atoms.
- D. Glycolysis occurs in cytosol.
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Q83
BIOLOGY
Unit 3: Cell Structure and Function
Select the incorrect match:
↻ Repeated question — also appeared in
2018 (11 sets)
- A. Polytene – Oocytes of amphibians chromosomes
- B. Lampbrush – Diplotene bivalents chromosomes
- C. Submetacentric – L-shaped chromosomes
- D. Allosomes – Sex chromosomes
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Q84
BIOLOGY
Unit 5: Human Physiology
Which of the following terms describe human dentition?
↻ Repeated question — also appeared in
2018 (16 sets)
- A. Pleurodont, Diphyodont, Heterodont
- B. Thecodont, Diphyodont, Homodont
- C. Pleurodont, Monophyodont, Homodont
- D. Thecodont, Diphyodont, Heterodont
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Q84
BIOLOGY
Unit 5: Human Physiology
Which of the following terms describe human dentition?
↻ Repeated question — also appeared in
2018 (16 sets)
- A. Pleurodont, Diphyodont, Heterodont
- B. Thecodont, Diphyodont, Homodont
- C. Pleurodont, Monophyodont, Homodont
- D. Thecodont, Diphyodont, Heterodont
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Q85
BIOLOGY
Unit 1: Diversity in Living World
Which one of these animals is not a homeotherm?
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2018 (8 sets)
- A. Psittacula
- B. Macropus
- C. Camelus
- D. Chelone
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Q85
BIOLOGY
Unit 1: Diversity in Living World
Which one of these animals is not a homeotherm?
↻ Repeated question — also appeared in
2018 (8 sets)
- A. Psittacula
- B. Macropus
- C. Camelus
- D. Chelone
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Q86
BIOLOGY
Unit 1: Diversity in Living World
Which of the following features is used to identify a male cockroach from a female cockroach?
↻ Repeated question — also appeared in
2018 (3 sets)
- A. Presence of anal cerci
- B. Presence of a boat shaped sternum on the 9th abdominal segment
- C. Forewings with darker tegmina
- D. Presence of caudal styles
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Q86
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Which of the following features is used to identify a male cockroach from a female cockroach?
↻ Repeated question — also appeared in
2018 (11 sets)
- A. Presence of anal cerci
- B. Presence of a boat shaped sternum on the 9th abdominal segment
- C. Forewings with darker tegmina
- D. Presence of caudal styles
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Q87
BIOLOGY
Unit 1: Diversity in Living World
Which of the following organisms are known as chief producers in the oceans?
↻ Repeated question — also appeared in
2018 (11 sets)
- A. Euglenoids
- B. Dinoflagellates
- C. Cyanobacteria
- D. Diatoms
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Q87
BIOLOGY
Unit 1: Diversity in Living World
Which of the following organisms are known as chief producers in the oceans?
↻ Repeated question — also appeared in
2018 (11 sets)
- A. Euglenoids
- B. Dinoflagellates
- C. Cyanobacteria
- D. Diatoms
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Q88
BIOLOGY
Unit 1: Diversity in Living World
Ciliates differ from all other protozoans in
↻ Repeated question — also appeared in
2018 (15 sets)
- A. having two types of nuclei
- B. using flagella for locomotion
- C. using pseudopodia for capturing prey
- D. having a contractile vacuole for removing excess water
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Q88
BIOLOGY
Unit 1: Diversity in Living World
Ciliates differ from all other protozoans in
↻ Repeated question — also appeared in
2018 (15 sets)
- A. having two types of nuclei
- B. using flagella for locomotion
- C. using pseudopodia for capturing prey
- D. having a contractile vacuole for removing excess water
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Q89
BIOLOGY
Unit 1: Diversity in Living World
Which of the following animals does not undergo metamorphosis?
↻ Repeated question — also appeared in
2018 (8 sets)
- A. Starfish
- B. Earthworm
- C. Moth
- D. Tunicate
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Q90
BIOLOGY
Unit 1: Diversity in Living World
Identify the vertebrate group of animals characterized by crop and gizzard in its digestive system.
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2018 (9 sets)
- A. Osteichthyes
- B. Amphibia
- C. Aves
- D. Reptilia
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Q91
CHEMISTRY
Unit 19: Biomolecules
The two functional groups characteristic of sugars are
↻ Repeated question — also appeared in
2018 (7 sets)
- A. carbonyl and hydroxyl
- B. hydroxyl and methyl
- C. carbonyl and phosphate
- D. carbonyl and methyl
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Q92
BIOLOGY
Unit 3: Cell Structure and Function
Which among the following is not a prokaryote?
- A. Oscillatoria
- B. Saccharomyces
- C. Nostoc
- D. Mycobacterium
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Q93
BIOLOGY
Unit 4: Plant Physiology
Which of the following is not a product of light reaction of photosynthesis?
↻ Repeated question — also appeared in
2018 (15 sets)
- A. Oxygen
- B. ATP
- C. NADPH
- D. NADH
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Q94
BIOLOGY
Unit 4: Plant Physiology
Stomatal movement is not affected by
↻ Repeated question — also appeared in
2018 (15 sets)
- A. CO2 concentration
- B. Temperature
- C. O2 concentration
- D. Light
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Q95
BIOLOGY
Unit 3: Cell Structure and Function
The Golgi complex participates in
↻ Repeated question — also appeared in
2018 (15 sets)
- A. Activation of amino acid
- B. Fatty acid breakdown
- C. Respiration in bacteria
- D. Formation of secretory vesicles
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Q96
BIOLOGY
Unit 3: Cell Structure and Function
Which of the following is true for nucleolus?
↻ Repeated question — also appeared in
2018 (15 sets)
- A. It is a site for active ribosomal RNA synthesis.
- B. Larger nucleoli are present in dividing cells.
- C. It takes part in spindle formation.
- D. It is a membrane-bound structure.
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Q97
BIOLOGY
Unit 3: Cell Structure and Function
The stage during which separation of the paired homologous chromosomes begins is
↻ Repeated question — also appeared in
2018 (8 sets)
- A. Zygotene
- B. Pachytene
- C. Diakinesis
- D. Diplotene
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Q98
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Stomata in grass leaf are
↻ Repeated question — also appeared in
2018 (10 sets)
- A. Barrel shaped
- B. Dumb-bell shaped
- C. Rectangular
- D. Kidney shaped
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Q99
BIOLOGY
Unit 6: Reproduction
Pollen grains can be stored for several years in liquid nitrogen having a temperature of
↻ Repeated question — also appeared in
2018 (15 sets)
- A. – 160°C
- B. – 120°C
- C. – 196°C
- D. – 80°C
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Q100
BIOLOGY
Unit 4: Plant Physiology
Oxygen is not produced during photosynthesis by
↻ Repeated question — also appeared in
2018 (15 sets)
- A. Chara
- B. Green sulphur bacteria
- C. Cycas
- D. Nostoc
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Q101
BIOLOGY
Unit 6: Reproduction
Double fertilization is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. Syngamy and triple fusion
- B. Fusion of two male gametes of a pollen tube with two different eggs
- C. Fusion of two male gametes with one egg
- D. Fusion of one male gamete with two polar nuclei
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Q102
BIOLOGY
Unit 6: Reproduction
Which one of the following plants shows a very close relationship with a species of moth, where none of the two can complete its life cycle without the other?
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2018 (10 sets)
- A. Viola
- B. Hydrilla
- C. Banana
- D. Yucca
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Q103
BIOLOGY
Unit 4: Plant Physiology
Which of the following elements is responsible for maintaining turgor in cells?
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2018 (15 sets)
- A. Calcium
- B. Magnesium
- C. Potassium
- D. Sodium
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Q104
BIOLOGY
Unit 4: Plant Physiology
In which of the following forms is iron absorbed by plants?
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2018 (15 sets)
- A. Both ferric and ferrous
- B. Ferric
- C. Free element
- D. Ferrous
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Q105
BIOLOGY
Unit 4: Plant Physiology
What is the role of NAD+ in cellular respiration?
↻ Repeated question — also appeared in
2018 (13 sets)
- A. It is the final electron acceptor for anaerobic respiration.
- B. It functions as an enzyme.
- C. It is a nucleotide source for ATP synthesis.
- D. It functions as an electron carrier.
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Q106
BIOLOGY
Unit 7: Genetics and Evolution
Select the correct match :
↻ Repeated question — also appeared in
2018 (16 sets)
- A. Francois Jacob and Jacques Monod – Lac operon
- B. Alec Jeffreys – Streptococcus pneumoniae
- C. Matthew Meselson and F. Stahl – Pisum sativum
- D. Alfred Hershey and Martha Chase – TMV
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Q106
BIOLOGY
Unit 7: Genetics and Evolution
Select the correct match:
↻ Repeated question — also appeared in
2018 (16 sets)
- A. Francois Jacob and Jacques Monod - Lac operon
- B. Alec Jeffreys - Streptococcus pneumoniae
- C. Matthew Meselson and F. Stahl - Pisum sativum
- D. Alfred Hershey and Martha Chase - TMV
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Q107
BIOLOGY
Unit 7: Genetics and Evolution
The experimental proof for semiconservative replication of DNA was first shown in a
↻ Repeated question — also appeared in
2018 (14 sets)
- A. Virus
- B. Fungus
- C. Plant
- D. Bacterium
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Q107
BIOLOGY
Unit 7: Genetics and Evolution
The experimental proof for semiconservative replication of DNA was first shown in a
↻ Repeated question — also appeared in
2018 (14 sets)
- A. Virus
- B. Fungus
- C. Plant
- D. Bacterium
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Q108
BIOLOGY
Unit 7: Genetics and Evolution
Select the correct statement :
↻ Repeated question — also appeared in
2018 (16 sets)
- A. Transduction was discovered by S. Altman.
- B. Franklin Stahl coined the term “linkage”.
- C. Spliceosomes take part in translation.
- D. Punnett square was developed by a British scientist.
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Q108
BIOLOGY
Unit 7: Genetics and Evolution
Select the correct statement:
↻ Repeated question — also appeared in
2018 (16 sets)
- A. Transduction was discovered by S. Altman.
- B. Franklin Stahl coined the term 'linkage'.
- C. Spliceosomes take part in translation.
- D. Punnett square was developed by a British scientist.
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Q109
BIOLOGY
Unit 7: Genetics and Evolution
Which of the following pairs is wrongly matched?
↻ Repeated question — also appeared in
2018 (16 sets)
- A. T.H. Morgan : Linkage
- B. Starch synthesis in pea : Multiple alleles
- C. XO type sex determination : Grasshopper
- D. ABO blood grouping : Co-dominance
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Q109
BIOLOGY
Unit 7: Genetics and Evolution
Which of the following pairs is wrongly matched?
↻ Repeated question — also appeared in
2018 (16 sets)
- A. T.H. Morgan : Linkage
- B. Starch synthesis in pea : Multiple alleles
- C. XO type sex determination : Grasshopper
- D. ABO blood grouping : Co-dominance
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Q110
BIOLOGY
Unit 6: Reproduction
Offsets are produced by
↻ Repeated question — also appeared in
2018 (16 sets)
- A. Parthenogenesis
- B. Meiotic divisions
- C. Parthenocarpy
- D. Mitotic divisions
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Q110
BIOLOGY
Unit 6: Reproduction
Offsets are produced by
↻ Repeated question — also appeared in
2018 (16 sets)
- A. Parthenogenesis
- B. Meiotic divisions
- C. Parthenocarpy
- D. Mitotic divisions
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Q111
BIOLOGY
Unit 6: Reproduction
Which of the following flowers only once in its life-time?
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2018 (15 sets)
- A. Papaya
- B. Bamboo species
- C. Mango
- D. Jackfruit
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Q112
BIOLOGY
Unit 6: Reproduction
Which of the following has proved helpful in preserving pollen as fossils?
↻ Repeated question — also appeared in
2018 (10 sets)
- A. Sporopollenin
- B. Pollenkitt
- C. Oil content
- D. Cellulosic intine
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Q113
BIOLOGY
Unit 9: Biotechnology and Its Applications
Use of bioresources by multinational companies and organisations without authorisation from the concerned country and its people is called
↻ Repeated question — also appeared in
2018 (14 sets)
- A. Bioexploitation
- B. Bio-infringement
- C. Biodegradation
- D. Biopiracy
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Q114
BIOLOGY
Unit 9: Biotechnology and Its Applications
Which of the following is commonly used as a vector for introducing a DNA fragment in human lymphocytes?
↻ Repeated question — also appeared in
2018 (15 sets)
- A. pBR 322
- B. Retrovirus
- C. λ phage
- D. Ti plasmid
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Q115
BIOLOGY
Unit 9: Biotechnology and Its Applications
The correct order of steps in Polymerase Chain Reaction (PCR) is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. Denaturation, Annealing, Extension
- B. Extension, Denaturation, Annealing
- C. Denaturation, Extension, Annealing
- D. Annealing, Extension, Denaturation
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Q116
BIOLOGY
Unit 9: Biotechnology and Its Applications
A ‘new’ variety of rice was patented by a foreign company, though such varieties have been present in India for a long time. This is related to
↻ Repeated question — also appeared in
2018 (15 sets)
- A. Basmati
- B. Co-667
- C. Lerma Rojo
- D. Sharbati Sonora
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Q117
BIOLOGY
Unit 7: Genetics and Evolution
Select the correct match:
↻ Repeated question — also appeared in
2018 (16 sets)
- A. G. Mendel – Transformation
- B. Ribozyme – Nucleic acid
- C. T.H. Morgan – Transduction
- D. F2 × Recessive parent – Dihybrid cross
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Q118
BIOLOGY
Unit 9: Biotechnology and Its Applications
In India, the organisation responsible for assessing the safety of introducing genetically modified organisms for public use is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. Genetic Engineering Appraisal Committee (GEAC)
- B. Indian Council of Medical Research (ICMR)
- C. Research Committee on Genetic Manipulation (RCGM)
- D. Council for Scientific and Industrial Research (CSIR)
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Q119
BIOLOGY
Unit 10: Ecology and Environment
Which of the following is a secondary pollutant?
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2018 (15 sets)
- A. O3
- B. CO
- C. SO2
- D. CO2
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Q120
BIOLOGY
Unit 10: Ecology and Environment
Natality refers to
↻ Repeated question — also appeared in
2018 (15 sets)
- A. Number of individuals entering a habitat
- B. Death rate
- C. Number of individuals leaving the habitat
- D. Birth rate
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Q121
BIOLOGY
Unit 10: Ecology and Environment
Niche is
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2018 (15 sets)
- A. the functional role played by the organism where it lives
- B. all the biological factors in the organism’s environment
- C. the range of temperature that the organism needs to live
- D. the physical space where an organism lives
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Q122
BIOLOGY
Unit 10: Ecology and Environment
World Ozone Day is celebrated on
↻ Repeated question — also appeared in
2018 (15 sets)
- A. 22nd April
- B. 5th June
- C. 16th September
- D. 21st April
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Q123
BIOLOGY
Unit 10: Ecology and Environment
In stratosphere, which of the following elements acts as a catalyst in degradation of ozone and release of molecular oxygen?
↻ Repeated question — also appeared in
2018 (15 sets)
- A. Oxygen
- B. Carbon
- C. Fe
- D. Cl
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Q124
BIOLOGY
Unit 10: Ecology and Environment
What type of ecological pyramid would be obtained with the following data? Secondary consumer: 120 g, Primary consumer: 60 g, Primary producer: 10 g
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2018 (15 sets)
- A. Upright pyramid of biomass
- B. Inverted pyramid of biomass
- C. Upright pyramid of numbers
- D. Pyramid of energy
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Q125
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Pneumatophores occur in
↻ Repeated question — also appeared in
2018 (10 sets)
- A. Submerged hydrophytes
- B. Halophytes
- C. Carnivorous plants
- D. Free-floating hydrophytes
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Q125
BIOLOGY
Unit 2: Structural Organisation in Animals and Plants
Pneumatophores occur in
↻ Repeated question — also appeared in
2018 (10 sets)
- A. Submerged hydrophytes
- B. Halophytes
- C. Carnivorous plants
- D. Free-floating hydrophytes
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Q136
PHYSICS
Unit 10: Oscillations and Waves
The fundamental frequency in an open organ pipe is equal to the third harmonic of a closed organ pipe. If the length of the closed organ pipe is 20 cm, the length of the open organ pipe is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. 16 cm
- B. 13.2 cm
- C. 12.5 cm
- D. 8 cm
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Q137
PHYSICS
Unit 9: Kinetic Theory of Gases
At what temperature will the rms speed of oxygen molecules become just sufficient for escaping from the Earth’s atmosphere? (Given: m = 2.76 x 10^-26 kg, k_B = 1.38 x 10^-23 J/K, v_esc = 11.2 km/s)
- A. 1.254 x 10^4 K
- B. 2.508 x 10^4 K
- C. 5.016 x 10^4 K
- D. 8.360 x 10^4 K
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Q138
PHYSICS
Unit 8: Thermodynamics
The efficiency of an ideal heat engine working between the freezing point and boiling point of water, is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. 12.5%
- B. 26.8%
- C. 6.25%
- D. 20%
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Q141
PHYSICS
Unit 14: Electromagnetic Induction and Alternating Currents
An inductor 20 mH, a capacitor 100 uF and a resistor 50 Ohm are connected in series across a source of emf, V = 10 sin 314 t. The power loss in the circuit is
↻ Repeated question — also appeared in
2018 (14 sets)
- A. 1.13 W
- B. 0.79 W
- C. 2.74 W
- D. 0.43 W
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Q142
PHYSICS
Unit 13: Magnetic Effects of Current and Magnetism
A thin diamagnetic rod is placed vertically between the poles of an electromagnet. When the current in the electromagnet is switched on, then the diamagnetic rod is pushed up. The work required to do this comes from
- A. the induced electric field due to the changing magnetic field
- B. the current source
- C. the lattice structure of the material of the rod
- D. the magnetic field
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Q142
PHYSICS
Unit 13: Magnetic Effects of Current and Magnetism
A thin diamagnetic rod is placed vertically between the poles of an electromagnet. When the current in the electromagnet is switched on, then the diamagnetic rod is pushed up, out of the horizontal magnetic field. Hence the rod gains gravitational potential energy. The work required to do this comes from
↻ Repeated question — also appeared in
2018 (14 sets)
- A. the induced electric field due to the changing magnetic field
- B. the current source
- C. the lattice structure of the material of the rod
- D. the magnetic field
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Q143
PHYSICS
Unit 13: Magnetic Effects of Current and Magnetism
Current sensitivity of a moving coil galvanometer is 5 div/mA and its voltage sensitivity (angular deflection per unit voltage applied) is 20 div/V. The resistance of the galvanometer is
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2018 (5 sets)
- A. 500 Ohm
- B. 40 Ohm
- C. 250 Ohm
- D. 25 Ohm
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Q143
PHYSICS
Unit 12: Current Electricity
Current sensitivity of a moving coil galvanometer is 5 div/mA and its voltage sensitivity (angular deflection per unit voltage applied) is 20 div/V. The resistance of the galvanometer is
↻ Repeated question — also appeared in
2018 (10 sets)
- A. 500 Ω
- B. 40 Ω
- C. 250 Ω
- D. 25 Ω
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Q144
PHYSICS
Unit 3: Laws of Motion
A moving block having mass m, collides with another stationary block having mass 4m. The lighter block comes to rest after collision. When the initial velocity of the lighter block is v, then the value of coefficient of restitution (e) will be
↻ Repeated question — also appeared in
2018 (10 sets)
- A. 0.4
- B. 0.5
- C. 0.8
- D. 0.25
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Q146
PHYSICS
Unit 3: Laws of Motion
Which one of the following statements is incorrect?
↻ Repeated question — also appeared in
2018 (14 sets)
- A. Coefficient of sliding friction has dimensions of length.
- B. Rolling friction is smaller than sliding friction.
- C. Frictional force opposes the relative motion.
- D. Limiting value of static friction is directly proportional to normal reaction.
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Q147
PHYSICS
Unit 5: Rotational Motion
Three objects, A: (a solid sphere), B: (a thin circular disk) and C: (a circular ring), each have the same mass M and radius R. They all spin with the same angular speed ω about their own symmetry axes. The amounts of work (W) required to bring them to rest, would satisfy the relation
↻ Repeated question — also appeared in
2018 (15 sets)
- A. WA > WC > WB
- B. WC > WB > WA
- C. WB > WA > WC
- D. WA > WB > WC
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Q148
PHYSICS
Unit 16: Optics
Unpolarised light is incident from air on a plane surface of a material of refractive index μ. At a particular angle of incidence i, it is found that the reflected and refracted rays are perpendicular to each other. Which of the following options is correct for this situation?
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2018 (15 sets)
- A. i = tan^-1(1/μ)
- B. Reflected light is polarised with its electric vector parallel to the plane of incidence
- C. i = sin^-1(1/μ)
- D. Reflected light is polarised with its electric vector perpendicular to the plane of incidence
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Q149
PHYSICS
Unit 16: Optics
In Young’s double slit experiment the separation d between the slits is 2 mm, the wavelength λ of the light used is 5896 Å and distance D between the screen and slits is 100 cm. It is found that the angular width of the fringes is 0.20°. To increase the fringe angular width to 0.21° (with same λ and D) the separation between the slits needs to be changed to
↻ Repeated question — also appeared in
2018 (14 sets)
- A. 1.7 mm
- B. 1.8 mm
- C. 2.1 mm
- D. 1.9 mm
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Q150
PHYSICS
Unit 16: Optics
An astronomical refracting telescope will have large angular magnification and high angular resolution, when it has an objective lens of
↻ Repeated question — also appeared in
2018 (15 sets)
- A. small focal length and small diameter
- B. small focal length and large diameter
- C. large focal length and large diameter
- D. large focal length and small diameter
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Q152
PHYSICS
Unit 19: Electronic Devices
In a p-n junction diode, change in temperature due to heating
↻ Repeated question — also appeared in
2018 (16 sets)
- A. affects the overall V – I characteristics of p-n junction
- B. affects only reverse resistance
- C. does not affect resistance of p-n junction
- D. affects only forward resistance
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Q152
PHYSICS
Unit 19: Electronic Devices
In a p-n junction diode, change in temperature due to heating
↻ Repeated question — also appeared in
2018 (16 sets)
- A. affects the overall V – I characteristics of p-n junction
- B. affects only reverse resistance
- C. does not affect resistance of p-n junction
- D. affects only forward resistance
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Q154
PHYSICS
Unit 12: Current Electricity
A carbon resistor of (47 ± 4.7) kΩ is to be marked with rings of different colours for its identification. The colour code sequence will be
↻ Repeated question — also appeared in
2018 (14 sets)
- A. Green – Orange – Violet – Gold
- B. Violet – Yellow – Orange – Silver
- C. Yellow – Green – Violet – Gold
- D. Yellow – Violet – Orange – Silver
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Q154
PHYSICS
Unit 12: Current Electricity
A carbon resistor of (47 ± 4.7) kΩ is to be marked with rings of different colours for its identification. The colour code sequence will be
↻ Repeated question — also appeared in
2018 (14 sets)
- A. Green – Orange – Violet – Gold
- B. Violet – Yellow – Orange – Silver
- C. Yellow – Green – Violet – Gold
- D. Yellow – Violet – Orange – Gold
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Q155
PHYSICS
Unit 12: Current Electricity
A set of ‘n’ equal resistors, of value ‘R’ each, are connected in series to a battery of emf ‘E’ and internal resistance ‘R’. The current drawn is I. Now, the ‘n’ resistors are connected in parallel to the same battery. Then the current drawn from battery becomes 10 I. The value of ‘n’ is
↻ Repeated question — also appeared in
2018 (16 sets)
- A. 9
- B. 10
- C. 20
- D. 11
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Q155
PHYSICS
Unit 12: Current Electricity
A set of ‘n’ equal resistors, of value ‘R’ each, are connected in series to a battery of emf ‘E’ and internal resistance ‘R’. The current drawn is I. Now, the ‘n’ resistors are connected in parallel to the same battery. Then the current drawn from battery becomes 10 I. The value of ‘n’ is
↻ Repeated question — also appeared in
2018 (16 sets)
- A. 9
- B. 10
- C. 20
- D. 11
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Q157
PHYSICS
Unit 7: Properties of Solids and Liquids
Two wires are made of the same material and have the same volume. The first wire has cross-sectional area A and the second wire has cross-sectional area 3A. If the length of the first wire is increased by Δl on applying a force F, how much force is needed to stretch the second wire by the same amount?
↻ Repeated question — also appeared in
2018 (14 sets)
- A. F
- B. 9 F
- C. 4 F
- D. 6 F
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Q158
PHYSICS
Unit 8: Thermodynamics
A sample of 0.1 g of water at 100°C and normal pressure (1.013 × 10^5 Nm^-2) requires 54 cal of heat energy to convert to steam at 100°C. If the volume of the steam produced is 167.1 cc, the change in internal energy of the sample, is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. 84.5 J
- B. 104.3 J
- C. 42.2 J
- D. 208.7 J
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Q159
PHYSICS
Unit 7: Properties of Solids and Liquids
A small sphere of radius ‘r’ falls from rest in a viscous liquid. As a result, heat is produced due to viscous force. The rate of production of heat when the sphere attains its terminal velocity, is proportional to
↻ Repeated question — also appeared in
2018 (15 sets)
- A. r^4
- B. r^3
- C. r^5
- D. r^2
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Q160
PHYSICS
Unit 8: Thermodynamics
The power radiated by a black body is P and it radiates maximum energy at wavelength λ0. If the temperature of the black body is now changed so that it radiates maximum energy at wavelength 3/4 λ0, the power radiated by it becomes nP. The value of n is
↻ Repeated question — also appeared in
2018 (12 sets)
- A. 256/81
- B. 4/3
- C. 81/256
- D. 3/4
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Q162
PHYSICS
Unit 10: Oscillations and Waves
A pendulum is hung from the roof of a sufficiently high building and is moving freely to and fro like a simple harmonic oscillator. The acceleration of the bob of the pendulum is 20 m/s^2 at a distance of 5 m from the mean position. The time period of oscillation is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. 1 s
- B. 2π s
- C. 2 s
- D. π s
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Q163
PHYSICS
Unit 10: Oscillations and Waves
A tuning fork is used to produce resonance in a glass tube. The length of the air column in this tube can be adjusted by a variable piston. At room temperature of 27°C two successive resonances are produced at 20 cm and 73 cm of column length. If the frequency of the tuning fork is 320 Hz, the velocity of sound in air at 27°C is
↻ Repeated question — also appeared in
2018 (14 sets)
- A. 300 m/s
- B. 330 m/s
- C. 350 m/s
- D. 339 m/s
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Q164
PHYSICS
Unit 11: Electrostatics
The electrostatic force between the metal plates of an isolated parallel plate capacitor C having a charge Q and area A, is
↻ Repeated question — also appeared in
2018 (16 sets)
- A. inversely proportional to the distance between the plates.
- B. independent of the distance between the plates.
- C. proportional to the square root of the distance between the plates.
- D. linearly proportional to the distance between the plates.
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Q164
PHYSICS
Unit 11: Electrostatics
The electrostatic force between the metal plates of an isolated parallel plate capacitor C having a charge Q and area A, is
↻ Repeated question — also appeared in
2018 (16 sets)
- A. inversely proportional to the distance between the plates.
- B. independent of the distance between the plates.
- C. proportional to the square root of the distance between the plates.
- D. linearly proportional to the distance between the plates.
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Q165
PHYSICS
Unit 17: Dual Nature of Matter and Radiation
When the light of frequency 2v0 (where v0 is threshold frequency), is incident on a metal plate, the maximum velocity of electrons emitted is v1. When the frequency of the incident radiation is increased to 5v0, the maximum velocity of electrons emitted from the same plate is v2. The ratio of v1 to v2 is
↻ Repeated question — also appeared in
2018 (16 sets)
- A. 2 : 1
- B. 1 : 2
- C. 4 : 1
- D. 1 : 4
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Q165
PHYSICS
Unit 17: Dual Nature of Matter and Radiation
When the light of frequency 2v₀ (where v₀ is threshold frequency) is incident on a metal plate, the maximum velocity of electrons emitted is v₁. When the frequency of the incident radiation is increased to 5v₀, the maximum velocity of electrons emitted from the same plate is v₂. The ratio of v₁ to v₂ is
↻ Repeated question — also appeared in
2018 (16 sets)
- A. 2 : 1
- B. 1 : 2
- C. 4 : 1
- D. 1 : 4
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Q166
PHYSICS
Unit 18: Atoms and Nuclei
For a radioactive material, half -life is 10 minutes. If initially there are 600 number of nuclei, the time taken (in minutes) for the disintegration of 450 nuclei is
↻ Repeated question — also appeared in
2018 (16 sets)
- A. 15
- B. 20
- C. 30
- D. 10
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Q166
PHYSICS
Unit 18: Atoms and Nuclei
For a radioactive material, half-life is 10 minutes. If initially there are 600 number of nuclei, the time taken (in minutes) for the disintegration of 450 nuclei is
↻ Repeated question — also appeared in
2018 (16 sets)
- A. 15
- B. 20
- C. 30
- D. 10
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Q167
PHYSICS
Unit 18: Atoms and Nuclei
The ratio of kinetic energy to the total energy of an electron in a Bohr orbit of the hydrogen atom is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. 1 : -2
- B. 1 : 1
- C. 2 : -1
- D. 1 : -1
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Q168
PHYSICS
Unit 17: Dual Nature of Matter and Radiation
An electron of mass m with an initial velocity →V = V₀î (V₀ > 0) enters an electric field →E = -E₀î (E₀ = constant > 0) at t = 0. If λ₀ is its de-Broglie wavelength initially, then its de-Broglie wavelength at time t is
↻ Repeated question — also appeared in
2018 (11 sets)
- A. λ₀
- B. (λ₀) / (1 + (eE₀t / mV₀))
- C. λ₀t
- D. λ₀(1 + (eE₀t / mV₀))
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Q169
PHYSICS
Unit 5: Rotational Motion
A solid sphere is in rolling motion. In rolling motion a body possesses translational kinetic energy (Kt) as well as rotational kinetic energy (Kr) simultaneously. The ratio Kt : (Kt + Kr) for the sphere is
↻ Repeated question — also appeared in
2018 (15 sets)
- A. 2 : 5
- B. 7 : 10
- C. 10 : 7
- D. 5 : 7
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Q170
PHYSICS
Unit 6: Gravitation
If the mass of the Sun were ten times smaller and the universal gravitational constant were ten times larger in magnitude, which of the following is not correct?
↻ Repeated question — also appeared in
2018 (13 sets)
- A. ‘g’ on the Earth will not change.
- B. Raindrops will fall faster.
- C. Time period of a simple pendulum on the Earth would decrease.
- D. Walking on the ground would become more difficult.
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Q171
PHYSICS
Unit 5: Rotational Motion
A solid sphere is rotating freely about its symmetry axis in free space. The radius of the sphere is increased keeping its mass same. Which of the following physical quantities would remain constant for the sphere?
↻ Repeated question — also appeared in
2018 (15 sets)
- A. Angular momentum
- B. Angular velocity
- C. Rotational kinetic energy
- D. Moment of inertia
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Q174
PHYSICS
Unit 14: Electromagnetic Induction and Alternating Currents
The magnetic potential energy stored in a certain inductor is 25 mJ, when the current in the inductor is 60 mA. This inductor is of inductance
↻ Repeated question — also appeared in
2018 (11 sets)
- A. 13.89 H
- B. 0.138 H
- C. 1.389 H
- D. 138.88 H
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Q176
PHYSICS
Unit 15: Electromagnetic Waves
An em wave is propagating in a medium with a velocity →V = Vî. The instantaneous oscillating electric field of this em wave is along +y axis. Then the direction of oscillating magnetic field of the em wave will be along
↻ Repeated question — also appeared in
2018 (16 sets)
- A. – x direction
- B. – z direction
- C. – y direction
- D. + z direction
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Q176
PHYSICS
Unit 15: Electromagnetic Waves
An EM wave is propagating in a medium with a velocity V = Vî. The instantaneous oscillating electric field of this EM wave is along the +y axis. Then the direction of the oscillating magnetic field of the EM wave will be along:
↻ Repeated question — also appeared in
2018 (16 sets)
- A. - x direction
- B. - z direction
- C. - y direction
- D. + z direction
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Q177
PHYSICS
Unit 3: Laws of Motion
A block of mass m is placed on a smooth inclined wedge ABC of inclination θ as shown in the figure. The wedge is given an acceleration ‘a’ towards the right. The relation between a and θ for the block to remain stationary on the wedge is:
↻ Repeated question — also appeared in
2018 (11 sets)
- A. a = g tan θ
- B. a = g / cos θ
- C. a = g cos θ
- D. a = g / sin θ
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Q178
PHYSICS
Unit 1: Physics and Measurement
A student measured the diameter of a small steel ball using a screw gauge of least count 0.001 cm. The main scale reading is 5 mm and the zero of the circular scale division coincides with 25 divisions above the reference level. If the screw gauge has a zero error of – 0.004 cm, the correct diameter of the ball is:
↻ Repeated question — also appeared in
2018 (9 sets)
- A. 0.529 cm
- B. 0.521 cm
- C. 0.053 cm
- D. 0.525 cm
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Q179
PHYSICS
Unit 5: Rotational Motion
The moment of the force F = 4î + 5ĵ - 6k̂ at (2, 0, - 3), about the point (2, - 2, - 2), is given by:
↻ Repeated question — also appeared in
2018 (13 sets)
- A. - 7î - 4ĵ - 8k̂
- B. - 8î - 4ĵ - 7k̂
- C. - 7î - 8ĵ - 4k̂
- D. - 4î - ĵ - 8k̂
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Q180
PHYSICS
Unit 2: Kinematics
A toy car with charge q moves on a frictionless horizontal plane surface under the influence of a uniform electric field E. Due to the force qE, its velocity increases from 0 to 6 m/s in one second duration. At that instant the direction of the field is reversed. The car continues to move for two more seconds under the influence of this field. The average velocity and the average speed of the toy car between 0 to 3 seconds are respectively:
↻ Repeated question — also appeared in
2018 (13 sets)
- A. 1.5 m/s, 3 m/s
- B. 2 m/s, 4 m/s
- C. 1 m/s, 3.5 m/s
- D. 1 m/s, 3 m/s
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