Class 10 Chemistry MCQs (Grade 10) From Textbook

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Class 10 Chemistry Certification MCQs – Practice Test 11 (Chapter 6)

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MCQ: 51

Which of the following makes up most of the air?

  1. nitrogen
  2. oxygen
  3. carbon dioxide
  4. helium
MCQ: 52

Which of the following is true about nitric oxide?

  1. it is colorless
  2. it has an irritating odor
  3. it is not toxic
  4. it is not harmful
MCQ: 53

Presence of which of the following can be felt near the photocopier, television set, microwave oven, etc.?

  1. chlorofluorocarbons (chlorofluorocarbons (CFCs))
  2. methane
  3. ozone
  4. lead compounds
MCQ: 54

The extension of troposphere above the Earth's surface is

  1. 12 km
  2. 50 km
  3. 80 km
  4. 70 km
MCQ: 55

The energy of sunlight is converted into heat by

  1. oxygen only
  2. nitrogen only
  3. hydrogen
  4. oxygen and nitrogen

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