Key Hse Che Em by a.jawahar

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

Key Hse Che Em by a.jawahar

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