Composition of Atmosphere MCQs Quiz and Answers Tests pdf Download

Practice composition of atmosphere MCQs in earth-science quiz for test prep. Atmosphere composition quiz questions has multiple choice questions (MCQ) with composition of atmosphere test, answers as the percentage of nitrogen in air is equal to, answer key with choices as -0.12, 0.21, 0.01 and 0.05 for exam preparation worksheets. Earth-science revision notes to learn composition of atmosphere quiz with MCQs to find questions answers based online tests.

MCQs on Composition of Atmosphere Quiz pdf Download

MCQ. Percentage of nitrogen in air is equal to

  1. -0.12
  2. 0.21
  3. 0.01
  4. 0.05

B

MCQ. Gas which has percentage equal to 78% in air is the

  1. oxygen
  2. hydrogen
  3. carbon dioxide
  4. nitrogen

D

MCQ. Mixture of gases around us is regarded as

  1. ecosystem
  2. atmosphere
  3. environment
  4. climate

B