Composition of Atmosphere MCQs Quiz Worksheet PDF Book Download

Composition of atmosphere MCQs, composition of atmosphere quiz answers for online elementary school courses. Atmosphere composition multiple choice questions (MCQs), composition of atmosphere quiz questions and answers for online school degrees. Energy in atmosphere, human caused pollution sources, layers of atmosphere, composition of atmosphere test prep for teacher certification.

Learn earth science MCQs: percentage of nitrogen in air is equal to, with choices -0.12, 0.21, 0.01, and 0.05 for online school degrees. Free Earth science student portal for online learning composition of atmosphere quiz questions, MCQs to find questions answers based online learning tests.

MCQ on Composition of Atmosphere PDF Book Download

MCQ: Percentage of nitrogen in air is equal to

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


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

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


MCQ: Mixture of gases around us is regarded as

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