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8/17/2019 Key Hse Che Em by a.jawahar
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SETHUPATHY GOVT HR SEC SCHOOL, THIRUCHULI, VIRUDHUNAGAR DT 626129MARCH 2016 ANSWER KEY
PART IQ.N O.N ANSWER (A TYPE) Q.N O.N ANSWER (B TYPE)1 d AgBr 1 D +62 d en 2 c T- shape3 c amino acid 3 b Catophorosis4 c Nitronium ion 4 a TiO2 5 b 3 5 c 16
6 c 16 6 a 4.2 X 10 sec-1 7 b Monazite 7 a Peroxide8 a Zn + 8 b Monazite9 b MnSO4 9 d AgBr10 a Silver colloid 10 b MnSO4 11 d +6 11 a Entrophy increases12 a Peroixdes 12 b 2:113 d Glucose 13 d Glucose14 b 2:1 14 d en15 b Decreases 15 c Amino acid16 a Ethyl methyl ether 16 d Kilo joule mole-1 17 a Entrophy increases 17 b 6
18 b 6 18 a Ethyl methyl ether19 c 1.44 t1/2 19 b 2- pentanone20 c p- dimethyl amino azo benzene 20 a Zn + 21 d R-CH3 21 c p- dimethyl amino azo benzene22 d Kilo joule mole-1 22 b q = 023 b 2- pentanone 23 d Calcium oxalate24 c T- shape 24 b K1 = 1/K2 25 b K1 = 1/K2 25 b 326 a TiO2 26 d R-CH3 27 b q = 0 27 a Silver colloid28 a 4.2 X 105 sec-1 28 b Decreases29 b Catophorosis 29 c Nitronium ion30 d Calcium oxalate 30 c 1.44 t1/2
PART– II31 Bond order:
bond order = ½(Nb – Na)32
33 Inert pair effect:
34 Ortho Phosphoric acid :Yellow colour precipitate
35 Nichrome: Cr = 15% , Ni = 60%, Fe = 25% Resistant wire for electrical heating 36
Action of heat on K2Cr2O7 ::::
37 Q –kjpg;G:kjpg;G:kjpg;G:kjpg;G:
Q = (mp-mr) 931 MeV mp = mass of the product, mr = mass of the reactantwhen energy is absorbed mp > mr Q = +ve when energy is released mr > mp Q = -ve
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38SC FCC BCC
39
40 Reaction Quotient: Ratio of product of initial concentrations of products to the product of initialconcentration of reactants under non – quilibrium conditions.
41
42 Threshold Energy:
43 Gas – Gas colloid :
44 Kohlraush’s Law: At infinite dilution wherein the ionisation of all electrolytes is complete , eachion migrates independently and contributes a definite value to the total equivalentconductance of the electrolyte.
45 1>31>31>31>3----Butadiene :
Cis trans 46 Glycerol ---- Acrolein.
47 High viscous nature of Glycol:Presence of Two Hydroxyl group the intermolecular H-bonding is made much
stronger and resulting in a polymeric structure48 Friedal – Crafts reaction:
49
50 A- Nitrobenzene B-Aniline 51 Anti Oxidants:
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Part - III Section A52
1.
2.
3.3.3.3.
4444.
5555.
6666.
7777.
53 Extraction of Zinc
54Difference between Lanthanides & Actinides::::
55 Haemoglobin:
Section – B
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56
57
1.... Effect of Concentration:
2.... Effect of Pressure:
58 i) Consecutive Reaction::::
59 Calculate the potential of the cell:
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Section - C60 i) Diethyl ether with Grignard reagents: ii)))) Diethyl ether with mineral acids:
iii) with excess of HI ::::
C2H
5-O-C
2H
5 + 2HI ----------2 C
2H
5I + H
2O
61 i) Benzoin Condensation ii)
62
63
Section - IV64 i)Ionisation Energy:
ii) Uses of Fluorine:
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67 a) Acid Buffers:
b) Cell Terminology
68 a) Geometrical Isomerism:
b) Action of heat on oxalic acid: Action of heat on succinic acid:
69 a) Reduction of Nitro benzene onalkaline medium:
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b) Classification of Carbohydrates:
70 a) C6H5OH (A)+ NaOH------
(B) (C) (D)
A-PhenolB-Sodium phenoxide C-Sodium salicylate D-Salicylic acid
b)
(A) (B)
(C)
A- Copper B-Copper sulphate C-Copper Sulphide
(or)c)
(A) (B)
( C)
A-Acetone B-Propane C-Mesitylene