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Dr A Gubendran, Assistant Professor Page 1
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 1
TRB Polytechnic Lecturer Chemistry 2017
(This is only a partial key. Fully solved question will be released soon)
The cut off marks will be 110 -150:
OC 135-155 BC 135-130 MBC 125-120 SC 120-115
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Dr A Gubendran, Assistant Professor Page 2
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 2
1. Cyclooctatetraene is not aromatic. The most important reason for this is that: (a) it has 4n electron (b) it is a planar molecule (c) its structure is not that of regular octagon (d) its structure cannot be described by more than two cannonical forms
2. For the sulphonation of pyrrole and indole, the following reagent is used (a) con H2SO4 (b) SO3 dissolved in pyridine at 120 oC (c) Fuming sulphuric acid at 220 oC (d) Chlorosulphonic acid
3. The basic unit of porphyrin system which occurs in chlorophyll and hemoglobin is: (a) Pyrrole (b) Furan (c) Thiophene (d) Oxazole
4. Succinic acid on heating with P2O5 gives a compound A which on treatment with ammonia followed by reduction with Zn and CH3COOH or HCl gives the product (a) Furan (b) Pyridine (c) Pyrrole (d) Thiophene
5. When
(a) 5-substituted alkyl quinoline (b) 7-substituted alkyl quinoline (c) mixture of 5- and 7-substituted alkyl quinoline (d) None of these
6. Find out the incorrect statement:
(a) Distribution of the solute in partition chromatography D =
(b) Larger the value of D, speeder will be the progress of the solute
(c) Rf =
(d) Rf is inversely related to D and can‟t be greater than 1
7. In atomic absorption spectroscopy, flame used for the detection of Cu, Cd and Zn: (a) H2-air (b) H2-O2 (c) C2H2-air (d) C2H2-N2O
8. XeF4 has square planar structure because (a) Three Raman and three IR bands are coincidental (b) Each three Raman and IR bands are not coincidental (c) Six Raman vibrational bands (d) It has no centre of symmetry
9. In NaCl ionic crystal, bond length is 2.36 Ao and the experimental dipole moment of this molecule is 8.5 D. The percentage of ionic character in NaCl bond in the given molecule is (a) 25% (b) 75% (c) 27% (d) 73% µionic = 4.8 × 10–10 × 2.36 × 10–8 esu cm = 11.33 Debye µobserved = 8.5 D
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Dr A Gubendran, Assistant Professor Page 3
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 3
∴ % ionic character = µobserved x100 / µionic = 8.5/11.33 × 100 = 75%
10. Which is wrongly matched? Ion / Compound Lewis acid present in it (a) F3B O(C2H5)2 BF3 (b) S2O3
2- SO32-
(c) BeF42- BeF2
(d) [Fe(CN)6]4- Fe2+
11. Betaine, an ylide and a phosphine oxide have tetra coordinated phosphorous. These species could not be causing the spectra, which leads to the conclusion that: (a) Optically active phosphonium salt reacts to produce a phosphine oxide with retention of configuration (b) Oxaphosphetane intermediate is present in the solution (c) The dipolar complex so formed decomposes to olefin and triphenyl phosphine oxide (d) Desired alkyl groups can be introduced in the alkyl halide
12. Higher enantioselectivity in the reduction of furan could be achieved by: (a) attaching silyl group to the nucleus
(b) using lithium together with a solvent and a weaker proton source (c) by adding an electron withdrawing substituent (d) by the formation of undesired side products
13. In the following reaction, side reaction can be avoided
(a) by the attachment of aluminium isopropoxide in excess of isopropyl alcohol
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Dr A Gubendran, Assistant Professor Page 4
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 4
(b) employing sodium carbonate, quinoline, pyridine and triethylamine bases (c) by selecting secondary amines (d) conducting the reaction in neutral solution
14. Which of the following statements are correct?
A. Reactivity of enamine depends on the amine moiety and on the degree of substations at the and positions β
B. Alkyl substituents at C- of an enamine enhances enamine reactivity C. Alkyl substituents at C-β of an enamine enhances enamine reactivity D. Cyclic and acyclic ketone enamines are more readily C-alkylated than aldehyde enamines (a) A and B (b) B and D (c) A, B and C (d) A, B, C and D
15. In Dieckmann condensation reaction in which larger rings are to be closed are generally assisted by high dilution, since: (a) migration of the group occurs with retention of its configuration (b) abnormal products will not be formed (c) one end of the molecule has a better chance of finding the other end than that of finding another molecule (d) None
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Dr A Gubendran, Assistant Professor Page 5
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 5
16. Pick out the correct statement from the following: (a) Sulphamic acid behaves as a dibasic acid in aqueous solution (b) HNO3behaves as a acid in H2SO4 (c) Urea behaves as a strong base in conc.H2SO4 (d) H2SO4 acts as acid in liquid NH3
17. Example for secular equilibrium: (a) Sr90 (τ =28.1 y); Y90 (τ =64.1 h) (b) Th234 (τ =24.1 d); Pa234 (τ = 1.18 min) (c) Ba140 (τ = 12.8 d); La140 (τ =40 h) (d) Rn232 (τ = 3.82 d); Po218 (τ = 3.05 min)
Essentials of Nuclear Chemistry By Hari Jeevan Arnikar 136
18. The anode and cathode used in a liquid GM counter respectively are (a) Platinum wire stretched inside the tube filled with argon; outer silvered wall (b) Tungsten wire stretched inside the tube filled with argon + halogen; inner silvered wall (c) Rhodium wire stretched inside the tube filled with Kr + halogen; inner platinized wall (d) Chromium wire stretched inside the tube filled with Kr + halogen; outer platinized wall
19. Frick solution is obtained by dissolving (a) 0.4 g of FeSO4(NH4)2SO4.6H2O + 0.06 g NaCl in 22 ml 95-98% H2SO4 made up to 1 litre with distilled water + air (b) 0.4 g of FAS + 1% NaCl in 44 ml 98% H2SO4 made up to 1 litre with deionized water + air being present (c) 0.8 g of FeSO4(NH4)2SO4.12H2O + 0.12 g NaCl in 66 ml 98% H2SO4 made up to 500mL with distilled water + air (d) 1.2 g of FAS + 1% KCl in 44 ml 98% H2SO4 made up to 750 mL with deionized water + air
20. Which one is wrongly matched? (a) total amount of red blood cells (i) chromium - 51 (b) uptake of phosphorous by plants (ii) P-32 (c) volume of water in the body (iii) 1H
2 or 1H3
(d) mixture of amino acids (iv) Nitrogen -15
21. Pick out the correct increasing order of Ka values of acids: (a) HCN < HF < H2S < HCOOH (b) H2S < HCN < H3PO4 < HF (c) H2CO3 < H3BO3 < H2S < HCN (d) H3BO3 < H2CO3 < CH3COOH < HCOOH
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Dr A Gubendran, Assistant Professor Page 6
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 6
22. Read the statements: (A) A pearls distortion ensures that no one dimensional solid is a metallic conductor below a critical temperature (B) A solid insulator is a semiconductor with a large band gap (a) Statement (A) and (B) are wrong (b) Statement (A) and (B) are correct (c) Statement (A) is correct, (B) is wrong (d) Statement (B) is correct, (A) is wrong
23. Which is correctly matched? Ionic crystal Lattice energy (kJmol-1) (a) AgCl 895
(b) CsI 601
(c) LiI 140
(d) NaCl 1033 The question setter must be a sadist or heartless person. This kind of question will demoralize students‟ sprit to prepare competitive exam. There are so many ways to ask question in lattice energy. How can one memorize lattice energy values? But the trend i.e., increasing or decreasing order can be predicted if lattice energy values of ionic crystals are given.
24. Pick out the wrong statement from the following: (a) K2CO3 is soluble in liquid SO2 (b) SO2 acts both as a Lewis acid and as a Lewis base (c) A Liquid NH3 solution of phenolphthalein is colorless (d) Liquid SO2 exhibits association whereas liquid NH3 does not
S.Chands Success Guide (Q&A) Inorganic Chemistry By Gaurav Madan page 728
25. Pick out the compound which behaves as a weak acid in liq.NH3 (a) HClO4 (b) NH2CONH2 (c) CH3COOH (d) Mg(NH2)2
26. trans-2-bromostilbene is obtained by the elimination of HBr from:
(a) (+) 1,2-bromo-1,2-diphenyl ethane (b) (-) 1,2-bromo-1,2-diphenyl ethane (c) meso-1,2-bromo-1,2-diphenyl ethane (d) both (a) and (b)
27. The correct nomenclature of the following compound is
(a) (2E, 4Z)-2,4-Hexadienoic acid (b) (2Z, 4E)-2,4-Hexadienoic acid (c) (2E, 4E)-2,4-Hexadienoic acid (d) (1E, 3Z)-2,4-Hexadienoic acid
28. The compound which gives racemic mixture on bromination is: (a) trans-2-butene (b) trans-2-pentene (c) cis-2-butene (d) 1-butene
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29. Alkene can be converted into trans-1,2-diol using (a) KMnO4 (b) HIO4 (c) I2, CH3COOAg, AcOH (d) H2SO4
30. Chiral compound among the following is: (a) meso tartaric acid (b) cis-2,3-dimethyloxirane (c) 2-heptanol (d) Acetaldehyde
31. The product of the following reaction is: PhCOCH3 + PhCO3H → product (a) PhCOOCH3 (b) PhCOOPh (c) CH3OH (d) CH3COOPh
32. Addition of singlet methylene to cis-2-butene gives: (a) cis-1,2-dimethylcyclopropane (b) trans-1,2-dimethylcyclopropane (c) mixture of (a) and (b) (d) trans-2-butene
33. The correct order of nucleophilicity is (a) F- > Cl- > Br- > I- (b) I- > Br- > Cl- > F- (c) Cl- > F- > Br- > I- (d) I- > Br- > F- > Cl-
Nature of solvent not mentioned
34. Acetolysis of 7-norborneyl tosylate is 1011 times faster than 7-norbornyl tosylate and it is due to the: (a) presence of bicyclic ring (b) SN2 attack (c) presence of anchimeric assistance (d) front side attack
35. The sigmatropic shift involved in the following reaction is
(a) [1,4] (b) [1,2] (c) [5,5] (d) [1,5] 36. Match the following:
Compound b,pt / stability Uses
(I) HNO3 (a) 55 C (i) Fertilizer, Fireworks, TNT
(II) HNO2 (b) 86 C (ii) azo dyes (III) NOCl (c) unstable (iii) Tildan reagent
(d) 40 C
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Codes
(a) (I) (b) (i), (II) (c) (ii) (III) (a) (iii)
(b) (I) (d) (i), (II) (b) (iii) (III) (a) (ii)
(c) (I) (b) (ii), (II) (d) (iii) (III) (c) (i)
(d) (I) (d) (ii), (II) (a) (iii) (III) (b) (i)
37. Which one is not true?
(a) Borazine is known as „Inorganic Benzene‟
(b) Borazine undergoes addition reactions whereas benzene does not undergo
(c) cloud in borazine is lumpy, N retains basicity and B retains acidity
(d) With Br2, borazine undergoes electrophilic addition
38. Which is not possible?
(a)[C2B9H12] + NaH
→ [C2B9H11]
2 + H2 + Na+
(b) 2[C2B9H11]2 + FeCl2
→ [(C2B9H11)2Fe]2 + 2Cl
(c) [C2B9H11]2 + [C5H5]
+ FeCl2 → [C2B9H11FeC5H5]
+ 2Cl
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(d) [C2B9H11]2 + BrMn(CO)5
→ [C2B9H11Mn(CO)5]
+ Br
39. Match the following:
Molecule Physical state (b.pt/m.ptC)
(A) ClF3 (i) bright yellow solid (below 68C is a dimer)
(B) BrF3 (ii) colourless gas condenses to pale green liquid (12C)
(C) ICl3 (iii) red liquid (90C)
(iv) straw colored liquid(125.8C) Codes:
(A) (B) (C) (a) (ii) (iv) (i) (b) (ii) (iii) (i) (c) (iv) (i) (ii) (d) (ii) (iii) (iv)
40. Jahn-Teller distortions are not expected in:
(a) High spin d4 system (b) Low spin d4 system (c) d9 system (d) d3 system
41. The addition of LiClO4 in the acetolysis of certain tosylates produced: (a) Initial steep rate acceleration which the decreased to normal linear acceleration
(b) Initial steep rate decrease which the decreased (c) Steady uniform linear acceleration (d) does not influence rate
42. The mechanism involved in the Sommelet-Hauser rearrangement is an example of (a) [5,5] sigmatropic rearrangement (b) [2,3] sigmatropic rearrangement
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(c) [3,3] sigmatropic rearrangement (d) [1,3] sigmatropic rearrangement
43. Ordinary aldehydes and ketones can add to olefins, under the influence of UV light to give oxetanes. This reaction is called: (a) Barton reaction (b) Dakin reaction (c) Paterno-Buchi reaction (d) Wittig reaction
44. cis-3,4-dimethylcyclobutene on heating gives (a) trans, trans-2,4-hexadiene (b) cis, cis-2,4-hexadiene (c) cis, trans-2,4-hexadiene (d) both (a) and (b)
45. The addition of benzenediazonium chloride to vinylcyanide in the presence of cupric salt and acetone is: (a) Schiemann reaction (b) Bart reaction (c) Gattermann reaction (d) Meerwein reaction
46. [Mo(CN)8]3- when enriched with 13C gives rise to _______ ESR lines.
(a) 17 (b) 9 (c) 153 (d) None of these
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Reference: Analytical Chemistry, Second Edition by Dash, Dhruba Charan
47. The NMR that gives information about the back bone to molecules rather than about the periphery in:
(a) 13C-NMR (b) 19F- NMR (c) 1H- NMR (d) 31P- NMR
Reference: Principles of Instrumental Analysis By Douglas A. Skoog, F. James Holler, Stanley R. Crouch
48. When an electric current is passed through a cell containing the electrode +ve ions move towards the
cathode and –ve ions move towards anode. If the cathode is pulled out of the solution:
(a) +ve and –ve ions both will move towards the anode
(b) +ve ions will start moving towards the anode and –ve ions will stop moving
(c) –ve ions will continue moving towards the anode and +ve ions will stop moving
(d) +ve and –ve ions both will start moving randomly
Answer
Objective Question Bank in Chemistry By B.K. Sharma
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Dr A Gubendran Asst.Prof S.N College Page 12
49. How many moles of water are available to solvate ions in 1 litre (1dm3) of pure water?
(a) 55.5 moles (b) 50.0 moles (c) 5.55 moles (d) 50.5 moles
50. When two dissimilar metals are to be contact for corrosion control the anode material should have ----
------ area and cathode material should have ------------ area.
(a) both are smaller (b) larger and smaller (c) tiny and larger (d) both are larger
51. Energy of H2 molecule is calculated by
(a) E =
(b) E =
τ
τ (c) E = -
-
-
(d) None
52. The rate constant for the reaction:
2N2O5 → 4NO2 + O2 is, 3 x 10-5 sec-1. If the rate is 2.4 x 10-5 mol-1s-1 then the concentration of N2O5 in
mol l-1 is:
(a) 1.4 (b) 0.8 (c) 1.2 (d) 0.4
Rate = k [N2O5]2
2.4 x 10-5 = 3 x 10-5 [N2O5]2
[N2O5]2 = 2.4 x 10-5 / 3 x 10-5 = 0.8
53. An endothermic reaction, A → B has an activation energy of 15 kcal/mole energy of reaction is 5
kcal/mole. The activation energy for the reaction B → A is:
(a) 15 kcal/mole (b) 20 kcal/mole (c) 40 kcal/mole (d) 10 kcal/mole
54. Which of the following is an example of acid-base catalysis?
(a) 2 H2 + O2 2H2O (b) 2 SO2 + O2 2SO3
(c) CH3COOC2H5 + H2O → CH3COOH + C2H5OH (d) 2NH4NO2 → N2O + H2O
55. The rate determining step in the heterogeneous catalysis reaction is:
(a) Diffusion of reactants to surface (b) Adsorption of reactants at the surface
(c) Chemical reactants at the surface (d) Desorption of products at the surface
56. Rotational spectra are studied in: (a) Visible region (b) UV region (c) Microwave region (d) None of these
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Dr A Gubendran, Assistant Professor Page 13
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 13
57. The moment of Inertia of two isotopic molecules 12CO and *CO are related to the reduces masses
according to the formula
(a)
=
(b)
= √
(c)
=
(d)
=√
58. The parallel band for N2O molecule contains no Q branch, this information indicates that the molecule: (a) has centre of symmetry (b) is linear (c) has dipole moment (d) none of these answers
59. CH3 radical gives rise to an ESR spectrum corresponds to: (a) 1:3:3:1 (b) 1:2:1 (c) 1:1 (d) None
60. The OH proton in CH3OH in the presence of acid gives an NMR spectrum which is: (a) quartet (b) singlet (c) doublet (d) None
In acid medium OH proton is observed as singlet. In pure state (anhydrous state) it is observed as quartet
61. Pick out the incorrect sentence from the following regarding the characteristics of “Adsorption”:
(a) It is a surface phenomenon (b) It is a fast process
(c) It is an exothermic process
(d) here the substance is uniformly distributed throughout the substance
62. In which of the following statements, the entropy decreases?
(a) rusting of iron (b) vapourisation of camphor
(c) crystallization of sucrose from solution (d) melting of ice
Crash Course Jee(Main) / Aieee - Chemistry by V&S Editorial Board
Rusting itself involves a decrease in entropy, not an increase.
[Letter to the editor of American Journal of Physics.] [Submitted 12 May 2010. Revised 14 May 2010.
Accepted 17 May 2010.]
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Dr A Gubendran, Assistant Professor Page 14
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 14
63. Among the following equations, which is the correct equation to calculate fugacity at moderately
low temperature?
(a) f = P2V/RT (b) f = PV/RT (c) f2 = PV/RT (d) P = f2V/RT
64. The total partition function of a molecule is the
(a) Sum of rotational and vibrational partition functions
(b) Product of the translational, rotational and vibrational partition functions
(c) Product of translational and rotational partition functions
(d) Sum of the translational and vibrational partition functions
65. ∆ in the NMR spectrum for peak is at 60 Hz in an instrument operating at 100 MHz. If the instrument is operating at 120 MHz the ∆ is: (a) 90 Hz (b) 30Hz (c) 72Hz (d) 50 Hz
66. Which is correctly matched?
Configuration Ground state
(a) d9 2D5/2
(b) d10 2S1
(c) d2 4F3/2
(d) d1 3F2
67.
The reagents A, B and C are:
(a) NH3, Br, and Py (b) Br, NH3 and Py (c) NH3, Py and Br (d) Py, Br, and NH3
Advanced Inorganic Chemistry Gurdeep Raj: Vollume II
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Dr A Gubendran, Assistant Professor Page 15
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 15
68. Pick out the two actinides that have very long-lived isotopes and occur in significant quantities in nature is:
(a) Neptunium and Nobelium (b) Thorium and Uranium
(c) Plutonium and Californium (d) Actinium and Protactinium
69. (A) Yb3+ forms the seven co-ordinate complex [Yb(acac)3(OH2)]
(B) La3+ forms the eight coordinate complex [La(acac)3(OH2)2]
(C) Structure of [Yb(acac)3(OH2)] is capped trigonal prism
(D) Structure of [La(acac)3(OH2)2] is square antiprism
The correct statements are
(a) A and B only (b) C and D only (c) All are wrong (d) All are correct
70. The increasing -acceptor strength is:
(a) CS < NO+ < CN < NN (b) CN < NN < CNR < CO
(c) CO < CNR < NN < CN (d) NO+ < CS < CO < CNR
71. A compound with molecular formula C5H8 shows IR bands at 3300 cm-1 and 2110 cm-1. The compound is: (a) CH≡C-CH2-CH2-CH3 (b) CH3-C≡C-CH2-CH3 (c) CH2=CH-CH2-CH=CH2 (d) CH3-CH=CH-CH=CH2
IR spectroscopy indicates the presence of the C≡C and ≡C – H bonds in terminal alkynes through bands at 2100 – 2260 cm-1 and 3260 – 3330 cm-1, respectively.
72. A saturated open chain compound C3H8O shows IR band at 2950 cm-1 but none near 3300 cm-1 and 1720 cm-1. The compound is: (a) Aldehyde (b) Ketone (c) Alcohol (d) Ether
Engineering Chemistry by Dr. B.S. Chauhan page 48
73. Which of the following compound will give single peak in NMR due to equivalent protons?
(a) CH3OCH3 (b) CH3CH2OCH3 (c) CH3CH(Cl)CH3 (d) CH2=CH-Cl
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Dr A Gubendran, Assistant Professor Page 16
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 16
74. Predict the product:
(a) (b) (c) (d)
75. 2-Octanone on heating with hydrazine in the presence of a base to give n-octane is an example of : (a) Ullmann reaction (b) Wolf-Kishner reduction (c) Knorr synthesis (d) Knoevenagel reaction
76. In Lead storage battery anode and cathode are
(a) Lead, Copper with Cupric Oxide (b) Lead, Lead sulfate
(c) Spongy Lead, Grid of lead packed with Lead dioxide (d) Spongy Lead, Lead Nitrate
Chemistry by Mcmurry page 709
77. Pick out the correct sentence of photochemical reaction from the following:
(a) The reactions involve the absorption of light and independent of temperature
(b) The reactions can take place in the dark
(c) The free energy change is always +ve
(d) The rate of the reaction is not affected by the intensity of light
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Dr A Gubendran, Assistant Professor Page 17
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 17
Fundamentals of Photochemistry By K. K. Rohatgi-Mukherjee
78. The excited state in the molecule may return to the ground state by exciting a photon is known as
(a) Electronic transformation (b) Phosphorescence
(c) Fluorescence (d) Photosynthesis
79. Among the following reactions, pick out the reaction which with has = 0.25
(a) 2HI → H2 + I2 (b) 3O2
→ 2O3
(c) H2 + Cl2 → 2HCl (d) 2C4H10
→ C28H20
No Answer: (a) = 2 (b) = 3 (c) = 104-106 (d) = 0.5
80. In the following mechanism
A + → A* -----1
A* + A → A2 -----2
A* → A + -----3
the steps 1,2 and 3 are,
(a) dimerization, fluorescence and excitation (b) fluorescence, excitation and dimerization
(c) excitation, dimerization and fluorescence (d) phosphorescence, excitation and dimerization
81. F i = Ei i, which is pseudo Schrodinger equation, in which orbital is an eigen function of F. This
operator is introduced to include
(a) orthogonality of α and β spins (b) Electron exchange
(c) average potential energy (d) None
82. In the lowest energy level of n = 1, the particle is most likely to be in the middle of the box, while in
the next higher state of n = 2, the particle is
(a) is never to be found there (b) in the middle of the box
(c) near the wall (d) None
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Dr A Gubendran, Assistant Professor Page 18
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 18
Engineering Physics Theory and Experiments by S.K. Srivastava page 251
Concepts of Modern Physics By Arthur Beiser page 200
83. If the average distance of 1s electron from the nucleus is
a0, then write the wave function for 1s
orbital of hydrogen atom
(a) 100 =
(b) 100 =
eimϕ
(c) 100 =
√ e-r/a
0 (d) 100 =
√ ( ϕ ϕ
)
84.Statement: Teflon is used as insulation for electrical iteams and in the manufacture of gaskets and valves. Reason: Teflon has low chemical reactivity, excellent toughness, electrical and heat resistance. (a) Statement is correct but reason is wrong (b) Statement is wrong, but reason is correct (c) Both statement and reason are correct (d) Both statement and reason are wrong 85. Every dynamical variable, corresponding to a physically observable quantity can be expressed as a linear operator.If the operators were not linear:
(a) The wave functions obtained from a solution of the schrodinger equation could not be superimposed.
(b) It is quite reasonable to find the expectation value
(c) Both(A) and (B)
(d) None
86.Find out the incorrect statement:
(a) Equation for Gaussian distribution normal curve
(b) The result of an experiment is rejected if Q(experimental) where Q is rejection quotient
(c) Rejection quotient Q = (Xn-Xn-1)/(Xn-X1)
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Dr A Gubendran, Assistant Professor Page 19
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 19
(d) A practical compromise is to set limits at a confidence level of 90 or 95%
87. Maximum uncertainity in the expression: (16.6 ± 0.1)g - 2(16.7 ± 0.2)g + 3(7.3 ± 0.1)g
(a) 71.9 ± 0.8 g (b) 72 ± 0.1 g (c) 5.0 ± 0.4 g (d) 5.1 ± 0.8 g
88. Co-coordinating ability in decreasing order
(a) esters > alcohols > ketones > ethers (b) alcohols > ketones > ethers > esters
(c) ketones > esters > alcohols > ethers (d) ethers > alcohol > ketones > esters
89. Increasing order of functional groups in chromatography
(a) halides < sulfides < nitro compounds < amides< acids
(b) acids < amides < nitro compounds < sulfides < halides
(c) acids < nitro compounds < sulfides < amides < halides
(d) halides < amides < sulfides < acids < nitro compounds
90. At a constant rate of flow of mobile phase F, retention volume (VR) is related to retention time (tR) by the relation:
(a) VR =F/ tR (b) VR =F + tR (c) VR =F tR (d) VR =FtR
91.
(a) Indole (b) Quinoline (c) Isoquinoline (d) None of these
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Dr A Gubendran, Assistant Professor Page 20
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 20
92.
X Y Z
(a)
(b)
(c)
(d)
93. Which of the following sets of reagents can be used for step1 and step2 ?
Step1 Step2
(A) Br2 heating with Ag2O
(B) Br2/H2O heating with Ag2O
(C) NBS heating with copper powder
(D) Br2 heating in quinoline in the presence of Cu powder
Select the correct answear using the codes given below :
(A) (a),(b) and (c) (B) (b) and (d) (C) (c) alone (D) (d) alone
93. Which of the following sets of reagents can be used for step 1 and step 2
Step 1 Step 2
(A) Br2 heating with Ag2O
(B) Br2/H2O heating with Ag2O
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Dr A Gubendran, Assistant Professor Page 21
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 21
(C) NBS heating with copper powder
(D) Br2 heating in quinoline in the presence of Cu powder
Select the correct answer using the codes given below:
(a) A, B and D (b) B and D (c) C alone (d) D alone
94. sin2x is not an eigenfunction of the operator
but of d2/dx2. If so what is it eigenvalue ?
(a) 2 (b) 3 (c) -4 (d) 1
95. For the trial function, where υ1 and υ2 are orthonormal, find the expression for the weighted average of the energy in terms of the eigenvalues :
(A) (B) (C) (D)
96. The percentage of haemoglobin in dry weight of RBC is
(a) about 35% (b) about 95% (c) about 77% (d) about 55%
97. The value of CFSE in terms of 0 of d7 system in tetrahedral complex is:
(a) 1.2 o (b) 0.6 o (c) 0.36 o (d) 0.54 o
98. The stable conformation of 1,2,2,6,6- pentamethyl-4-hydroxy-4-phenylpiperidine is :
(A) Chair (B) Boat (C) Twist-boat (D) Half-chair
99. The molecule containing enantiotopic atoms is :
(a) Propane (b) Ethanol (c) malonic acid (d) Vinyl chloride
100. Conversion of one chair form to another requires an activation energy of about :
(a) 1.5 Kcal/mol (b) 5 Kcal/mol (c)10 Kcal/mol (d) 0.9 Kcal/mol
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Dr A Gubendran, Assistant Professor Page 22
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 22
Jerry march
101. Match the following : Super conductors Tc/K (A) Nb3Ge (i) 122 (B) Nb3Sn (ii) 95 (C) LiTi2O4 (iii) 13 (D) YBa2Cu3O7 (iv) 18.0 (v) 23.2 Codes : (A) (B) (C) (D) (a) (ii) (i) (v) (iv) (b) (iii) (ii) (i) (v) (c) (v) (iv) (iii) (ii) (d) (i) (iii) (iv) (v)
102. Pick out the wrong statement from the following : (a) Sb atom is in sp3d2 hybridised state in SbF6
3- ion (b) Te atom is in sp3d2 hybridised state in TeCl-
5 ion (c) Al atom is in sp3d2 hybridised state in AlF3
- ion (d) I ion is in sp3d2 hybritised state in IF4
+ ion
103. Match the following : Reaction Example (a) Oppenheimer-philips (1) 63
Cu(P,P,3n,9α)24Na
(b) Radioactive capture (2)133Cs(α,4n)
133La (C) Spallation (3)81Br(d,p)82Br (4)31P(n,r)P32
Codes : (a) (b) (c) (A) (3) (4) (1) (B) (3) (4) (2) (C) (4) (3) (1) (D) (2) (3) (1)
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Dr A Gubendran, Assistant Professor Page 23
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 23
104. On irradiation of a thin gold foil by slow neutrons (nv =1018 nm-2s-1) for 24 hour.0.0852% of it is transmuted into Au-198 of period 2.7 days. The cross for the reason is :
(a) 9.861b (b) 986.1b (c) 9861b (d) 98.61b
105. Match the following : Species pH
(A) MoO42- (i) higher acidic pH
(B) [Mo7O24]6- (ii) pH 1.8
(B) [β MO8O26]4-
(iii) higher pH (basic) (D) [Mo36O119(H2O)16]
8- (iv) neutral pH (v) pH 4 to 5 Codes: (A) (B) (C) (D) (a) (iii) (iv) (v) (i) (b) (iv) (iii) (ii) (v) (c) (iv) (iii) (i) (v) (d) (iii) (v) (i) (ii)
106. The reactions which are catalysed by any substance which has a tendency to lose a proton is called ──. In iodination of acetone the rate determinimg step is the ──
(A) Auto catalysis and decomposition of acetone
(B) Bio catalysis and formation of iodoethane
(C) Genaral acid catalysis and conversion of keto form into its enol form
(D) General acid-base catalysis and addition of iodine to enol form of acetone
Cyclopnt-2-one Cyclopentanol 2-Cyclohexenol Cyclohexanol
1. (a) (b) (c) (d)
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Dr A Gubendran, Assistant Professor Page 24
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 24
107. ∆H and ∆S for reaction are 30.558 kJ mol-1 and 0.066 kJ mol-1 at 1 atm pressure. The temperature at
which ∆G is equal to zero and the nature of the reaction, below this temperature are
(a) 483 K spontaneous (b) 443 K spontaneous
(c) 443 K non- spontaneous (d) 463 K non- spontaneous
G = H-TS
= 30.558 - (463 x 0.066)
G = 0
Below 463 K G is positive (nonspontaneous) and above this temperature G is negative.
108. Brunauer, Emmett and Teller derived the physical adsorption resulting in the formation of
multilayer, which is given by
(a)
=
+
(b)
=
+
(c)
=
+
(d)
=
+
109. Assertion (A): The identity element present in all molecules is doing nothing.
Reason (R): Rotation through an angle of
about an axis followed by reflection about a plane
perpendicular to that axis is called improper axis.
Codes:
(a) Both (A) and (R) are true and (R) is the correct explanation of (A)
(b) Both (A) and (R) are true and (R) is not a correct explanation of (A)
(c) (A) is true but (R) is false (d) (A) is false but (R) is true
110. Find the reducible representation of C3V point group
C3V E 2C3 3σV
A1 1 1 1
A2 1 1 -1
E 2 -1 0
RR of C3V = 4 1 0
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Dr A Gubendran, Assistant Professor Page 25
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 25
(a) R = A1 + A2 + E (b) R = A1 + 2E (c) R = A1 + 2A2 (d) R = 2A1 + E
aA1 = 1/6 [ 1.1.4 + 2.1.1 + 0 ] = 6/6 = 1
aA2 = 1/6 [ 1.1.4 + 2.1.1 + 0 ] = 6/6 = 1
aE = 1/6 [ 1.2.4 + 2.(-1).1 + 0 ] = 6/6 = 1
111. Assertion (A): Furan -2-carbaldehyde undergoes cannizaro reaction whereas pyrrole-2-carbaldehyde does not Reason (R): Highly electronegative oxygen atom does not contribute its unshared pair of electrons for resonance Codes: (a) Both (A) and (R) are true and (R) is the correct explanation of (A) (b) Both (A) and (R) are true but (R) is not a correct explanation of (A) (c) A is true but (R) is false (d) A is false but (R) is true
112. Match List I with List II and select the correct answer using the codes given below the list List -I List II A. Tetrahydrofuran (i) 0.70 D B. Furan (ii) 1.81 D C. Pyrrole (iii) 1.73 D
Codes: A B C (a) (iii) (i) (ii) (b) (i) (ii) (iii) (c) (iii) (ii) (i) (d) (i) (iii) (ii)
113. Calculate the wavelength of an electron through a potential gradient of 100 volt
(a) 0.805 x 10-5 m (b) 9.87 x 10-2 m (c) 1.227 x 10-10 m (d) 8.314 x 10-8 m
114. Calculate the average distance of the electron from the nucleus of H atom in the 2s state
(a)
(b) (a) 6 a0 (d)
r2 e-r
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Dr A Gubendran, Assistant Professor Page 26
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 26
Quantum Chemistry by R.K. Prasad page 202
115. For a particle in the state n =1, of a one – dimensional box of length L, find the probability that the
particle is in the region 0 ≤ x ≤
(a)
-
(b)
(c)
√ (d) 2mE
116. Find out the correct statement(s):
(A) Decaborane(14) is considered as B12H12 icosahedra frame work from which B1 and B6 have been removed
(B) Hexaborane(10) is not a pentagonal prism
(C) Icosahedron of [B12H12]2- is merely the upper limit of a series of deltahedra [BnHn]
2-
(D) If all the vertices of deltahedron are occupied the structure is called nido
Codes:
(a) B and D (b) A and C (c) B and C (d) D only
117. Pick out the correct decreasing order of stability of complex ion is
(a) [Cu(NH3)4]2+ > [Co(NH3)6]
3+ > [Hg(CN)4]2- > [Fe(SCN)6]
2+
(b) [Fe(SCN)6]2+ > [Hg(CN)4]
2- > [Hg(CN)4]2- > [Co(NH3)6]
3+
(c) [Hg(CN)4]2- > [Co(NH3)6]
3+ > [Fe(SCN)6]2+ > [Cu(NH3)4]
2+
(d) [Hg(CN)4]2- > [Co(NH3)6]
3+ > [Cu(NH3)4]2+ > [Fe(SCN)6]
2+
118. Which is correctly matched?
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Dr A Gubendran, Assistant Professor Page 27
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 27
Cluster valence electron count Structure of metal frame work (a) 86 Octahedron (b) 74 Trigonal prism (c) 90 Trigonal bipyramid (d) 72 Square pyramid
119. Pick out the optically inactive compound from the following
(a) [Co(en)3]Cl3 (b) [Cr(ox)3]3- (c) cis-[RhCl2(en)]+ (d) trans-[RhCl2(en)2]
+
optically inactive because of plane of symmetry
120. Erythro-3-bromo-2-butanol reacts with HBr to give:
(a) (+) isomer (b) (-) isomer (c) Racemic mixture (d) Meso product
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Dr A Gubendran, Assistant Professor Page 28
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 28
121. Predict the product
(a) (b) (c) (d)
Robinson Annulation
122. Predict the product
(a) (b)
(c) (d)
Wolf-Kishner reduction
123. Find out A and B in the following reactions:
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Dr A Gubendran, Assistant Professor Page 29
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 29
(a) A = LDA B =
(b) A = DCC B =
(c) A = Li/Liq NH3, EtOH B =
(d) A = MeNH2/NH3 B =
124. Complete the equation
(a) A = B = (b) A = B =
(c) A = B = (d) A = B =
125. Consider the following statements: (A) Azulene is aromatic (B) [10] Annulene is not aromatic
(C) [10] Annulene is having 4 n electrons Of these statements (a) A, B and C are correct (b) A and B are correct (c) A and C are correct (d) B and C are correct
126. The addition of pyridine to the mixture of (S)-1-phenylethanol and thionyl chloride results in the formation of 1-phenylchloride with (a) Retention of configuration (b) Racemization (c) No specific stereochemistry (d) Inverted configuration
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Dr A Gubendran, Assistant Professor Page 30
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 30
Organic reaction mechanism Peter Sykes
127. Predict the product:
(a) (b) (c) (d)
128. The main products of photolysis of hexa-2-one are (a) Propane and acetone (b) Propene and acetone (c) Ethane and acetone (d) Butene and acetone
IL Finar volume I
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Dr A Gubendran, Assistant Professor Page 31
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 31
129. The correct order of reactivity for SN1 reaction between ROTs and ethanol at 25 oC is:
(A) R = Et (B) R = Ph3C (C) R =iso-pro (D) R = CH2=CH-CH2 (E) R = PhCH2
(a) A > B > C > D > E (b) B > E > D > C > A
(c) E > C > A > D > B (d) C > A > D > E > B
130. Which of the following statements are correct for the given reaction? A. It involves the migration of bromine B. It is an example of Wagner-Meerwein rearrangement C. Hydride ion migration takes place during the reaction D. It involves 1,2-shift Codes: (a) A, B and D (b) A and D (c) B, C and D (d) B and C
131. Efficiency for column separations (N) related to retention volume and peak width measured in terms of standard deviation () by
(a) N = (
)2 (b) N = 16 (
)2
(c) N = 5.54 (
)1/2 (d) N = Length of the column x plate height
132. Match the following with respect to atomic absorption / emission methods: Element Flame Spectral line/nm (I) Ag (A) H2-O2 (i) 194 (II) Al (B) C2H2 - air (ii) 766 (III) K (C) C2H2 - N2O (iii) 328 (IV) Na (D) C2H2 – O2 (iv) 589
Codes: (a) (I) – (B) – (ii), (II) – (C) – (i), (III) – (A) – (iv), (IV) – (D) – (iii) (b) (I) - (C) – (iii), (II) - (A) - (iv), (III) – (D) – (i), (IV) – (B) – (ii) (c) (I) - (B) – (iii), (II) - (C) - (i), (III) – (D) – (ii), (IV) – (A) – (iv) (d) (I) - (C) – (iii), (II) - (A) - (iv), (III) – (B) – (i), (IV) – (D) – (ii)
133. Match the following with respect to nephelometry Element Reagent Inference (I) Ag A. NaH2PO2 (i) Br-, I- (II) Cl- B. NaCl (ii) Pb (III) SO4
2- C. AgNO3 (iii) NiI D. BaCl2 Codes: (a) I B (iii); II (C) (i) ; (III) D (ii) (b) I B (ii); II (D) (i) ; (III) C (iii) (c) I D (ii); II (C) (i) ; (III) B (iii) (d) I D (i); II (A) (ii) ; (III) C (iii)
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Dr A Gubendran, Assistant Professor Page 32
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 32
Instrumental Approach to Chemical Analysis By A.K.Srivastava page 370
134. Pick out the correct statement from the following: (a) H2
+ is paramagnetic and is stable (b) He2
+ is diamagnetic and is stable (c) F2 molecule has bond order equal to one and paramagnetic (d) F2 is more stable than OF
135. Match the following Buffer Constituent pH range (A) Borax + sodium hydroxide (i) 6.8 -9.2 (B) Glycine + Glycine hydrochloride (ii) 3.7 -5.6 (C) Boric acid + Borax (iii) 1.0 -3.7 (D) Disodium citrate + Trisodium citrate (iv) 5.0 - 6.3 (v) 9.2 - 11.0
A B C D (a) (v) (iii) (i) (iv) (b) (ii) (i) (v) (iii) (c) (i) (iv) (iii) (v) (d) (iv) (ii) (v) (i)
136. ESR spectrum of 1,4 Benzo semiquinone radical anion gives :
(a) 12 lines (b) Triplet of doublet (c) 6 lines (d) 5 lines
137. The mean activity coefficient of 0.01 molal NaCl is (A = 0.509)
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Dr A Gubendran, Assistant Professor Page 33
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 33
(a) 0.889 (b) 0.910 (c) 8.89 (d) 0.509
log ± = - A z+ z- √ I = 1/2 (mizi
2) ; A = 0.509
log ± = - 0.509 x 1 x 1x √
log ± = - 0.0509
± = anti log of - 0.0509 This question cannot be answered because you have to use either calculator or log table to take antilog value.
138. Among the following, which pairs are correctly matched? (A) a device that stores chemical energy for later release as electricity : Battery (B) a cadmium anode and a cathode composed of a paste of NiO(OH) : Leclanche cell (C) gives excellent performance in heart pacemakers, hearing aids, digital watches : Mercury battery (D) a storage cell is one which can operate both voltaic and electrical cell : Solar battery
Codes: (a) A, B and D (b) A, B and C (c) A, and C (d) B and D
139. The association constant KA for the equilibrium between free ions and ion pairs is given by
KA =
the terms Ca, f± and f1P are
(a) Fraction, analytical concentration, activity coefficient for ion pairs and mean activity coefficient (b) Fraction, analytical concentration, mean activity coefficient and activity coefficient for ion pairs (c) Fraction mean activity coefficient, frequency of ion pairs and activity coefficient (d) Fraction, active mass, ionic strength and frequency of ion pairs
140. The correct nomenclature of the following compound is:
A. B. C. D.(a) A-Z, B-Z, C-E, D-Z (b) A-Z, B-Z, C-E, D-E (c) A-Z, B-E, C-Z, D-Z (d) A-Z, B-Z, C-Z, D-E
141. Article 21-A and the RTE Act came into effect: (a) on 1st April 2010 (b) on 1st April 2009 (c) on 1st April 2017 (d) on 1st April 2005
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Dr A Gubendran, Assistant Professor Page 34
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 34
UPKAR‟S UGC NET/JRF/SET Education (Paper-III) Page 35
142. In a class of 45 students, a boy is ranked 20th. When two boys joined, his rank was dropped by one. What is his new rank from the end?
(a) 25th (b) 26th (c) 27th (d) 28th
25 Practice Sets SSC CGL Tier I Workbook 2nd Revised Edition by Disha Experts
143. In which of the following temple, the front Mandapam is in the form of a huge chariot drawn by horse? (a) Patteswaran temple (b) Darasuram temple (c) Thanjavur Brihadeeswarar temple (d) Thiruvarur Thyagaraja temple
144. First state to fix minimum education qualification for cooperative body poll: (a) Rajasthan (b) West Bengal (c) Tamilnadu (d) Karnataka
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Dr A Gubendran, Assistant Professor Page 35
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 35
Current Affairs August 2017 eBook By JagranJosh 296
145. Who wore the novel- „Kavalkottam‟? (a) Vannadasan (b) S. Venkatesan (c) Joe D Cruz (d) Puviarasan
146. What temperature are Fahrenheit and Celsius equal? (a) -40° (b) 574.59 (c) 40 (d) -574.59
0C = (F-32) x 5/9
147. Quit India Movement was launched in response to: (a) Cabinet Mission (b) Cripps proposals (c) Simon Commission Report (d) Wavell plan
IAS Prelims 2017 A Complete Guide: IAS Prelims 2017 A Complete Guide by Jagran Josh 110
148. Who won the gold both in the 5,000 and 110,000 meters event in 2017 Asian Athletics Championship? (a) Lakshmanan (b) Gopi Thonkanal (c) Jinson Johnson (d) Neeraj Chopra
149. The parliament can make any law for whole or any part of India for implementing international treaties: (a) With the consent of all the states (b) With the consent of the majority of states (c) With the consent of the states concerned (d) Without the consent of any state
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Dr A Gubendran, Assistant Professor Page 36
S.N College, Madurai 9442879957
Dr A Gubendran Asst.Prof S.N College Page 36
UGC NET/JRF/SET History (Paper II & III) Facts At a Glance By Dr. Mani Bhushan Mishra p 463
150. Consider the following rivers: A. Narmada B. Brahmaputra C. Godavari D. Tapti Which of the above is/are flowing into the Bay of Bengal? (a) A, B and C only (b) B and C only (c) A and B only (d) A and C only
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