57 A 57 B 57 C 57 D 57 E 58 A 58 B 58 C 58 D 58 E 59 E 59 B 59 C 59 D 59 E 60 A 60 B 60 C 60 D 60 E 61 A 61 B 61 C 61 D 61 E

Lakhmir Singh & Manjit Kaur - Chemistry

Very Short Answer Type Questions-Pg-131

1 2 3 A 3 B 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 A 18 B 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35

Short Answer Type Questions-Pg-133

36 A 36 B 36 C 36 D 37 38 A 38 B 39 A 39 B 39 C 40 A 40 B 41 A 41 B 42 A 42 B 43 A 43 B 44 A 44 B 45 A 45 B 46 47 48 49 A 49 B 50 A 50 B 50 C 51 A 51 B 51 C 52 A 52 B 52 C 53 A 53 B 54 55 56 A 56 B 56 C 57 A 57 B 58 59 60 A 60 B 61

Long Answer Type Questions-Pg-134

62 A 62 B 62 C 62 D 62 E 63 A 63 B 63 C 63 D 63 E 64 A 64 B 64 C 64 D 64 E 65 A 65 D 65 E

Multiple Choice Questions (MCQs)-Pg-135

66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88

Questions Based on High Order Thinking Skills (HOTS)-Pg-136

89 90 91 92 93 A 93 B 93 C 94 95 96 97 98 99 A 99 B 100

Very Short Answer Type Questions-Pg-167

1 2 3 4 5 A 5 B 5 C 6 A 6 B 7 8 B 8 B 9 10 11 12 13 14 15 17 18 19 20

Short Answer Type Questions-Pg-168

21 A 21 B 22 A 21 B 22 C 23 A 23 B 24 A 24 B 25 A 25 B 26 A 26 B 27 A 27 B 28 A 28 B 29 30 31 A 31 B 32 33 34 35 36 37 38 39 40 41

Long Answer Type Questions-Pg-169

42 A 42 B 42 C 42 D 42 E 43 A 43 B 43 C 43 D 43 E 44 A 44 B 44 C 44 D 44 E 45 A 45 B 45 C 45 D 45 E

Multiple Choice Questions (MCQs)-Pg-169

46 47 48 49 50 51 52 53 54 55 56 57 58 58 60 61 62 63 64 65 66

Questions Based on High Order Thinking Skills (HOTS)-Pg-171

67 A 67 B 67 C 67 D 68 69 70 71 73 74 75 76 77 78 79 80 81

Very Short Answer Type Questions-Pg-191

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

Short Answer Type Questions-Pg-192

31 32 33 34 A 34 B 35 A 35 B 36 A 36 B 37 A 37 B 37 C 38 A 38 B 38 C 39 40 41 42 43 44 A 44 B 44 C 45 46 A 46 B 46 C 46 D 47 48 A 48 B 48 C 49 A 49 B 49 C 50 A 50 B 51 A 51 B 51 C 52 53 A 53 B 54 55 A 55 B 55 C 55 D 56 A 56 B 56 C

Long Answer Type Questions-Pg-193

57 A 57 B 57 C 57 D 57 E 58 A 58 B 58 C 58 D 58 E 59 E 59 B 59 C 59 D 59 E 60 A 60 B 60 C 60 D 60 E 61 A 61 B 61 C 61 D 61 E

Multiple Choice Questions (MCQs)-Pg-194

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Questions Based on High Order Thinking Skills (HOTS)-Pg-195

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Q. 58 C5.0( 1 Vote )

How is aluminium met

Class 10th Lakhmir Singh & Manjit Kaur - Chemistry 3. Metal and Non-Metal

Answer :

Aluminium is extracted from bauxite by electrolytic reduction (electrolysis) of molten aluminium oxide. In this process, when electric current is passed through aluminium oxide, it decomposes to form aluminium metal and liberates oxygen gas.

2Al₂O₃(l) � 4Al(s) + 3O₂(g)

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