Air and Atmosphere Multiple Choice Questions 11

Practice air and atmosphere MCQs, grade 6 online science test 11, atmosphere basic facts multiple choice questions and answers. Atmosphere: basic facts revision test has science worksheets, helping answer key with choices as nitrogen, oxygen, argon and carbon of multiple choice questions (MCQ) with atmosphere basic facts quiz as an odorless, invisible gas that makes about 20%-22% of earth's atmosphere is known as for competitive exam prep, viva interview questions. Free science study guide to practice atmosphere basic facts quiz to attempt multiple choice questions based test.

MCQs on Air and Atmosphere Quiz PDF Download Worksheets 11

MCQ. An odorless, invisible gas that makes about 20%-22% of the earth's atmosphere is known as

  1. oxygen
  2. nitrogen
  3. argon
  4. carbon


MCQ. A thin layer that is held in place by gravity and provides us with oxygen is known as

  1. temperature
  2. season
  3. atmosphere
  4. weather


MCQ. The percentage composition of nitrogen in air is

  1. 58%
  2. 68%
  3. 78%
  4. 88%


MCQ. The second step of fractional distillation is heating the mixture so that components evaporate at their

  1. boiling point
  2. freezing point
  3. neutral point
  4. none of them


MCQ. In respiration, living organisms take in oxygen and give out

  1. water vapor
  2. argon
  3. carbon dioxide
  4. nitrogen