Class 6 Science MCQs - Chapter 1
Air and Atmosphere Quiz Questions & Answers PDF Download - 11
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The Quiz: An odorless, invisible gas that makes about 20%-22% of the earth's atmosphere is known as; "Air and Atmosphere" App (iOS, Android) with answers: Nitrogen; Oxygen; Argon; Carbon; to learn e-learning courses. Study Atmosphere Basic facts MCQ Questions, download Amazon eBook (Free Sample) for online education programs.
Air and Atmosphere Exam Questions and Answers PDF Download: Test 11
An odorless, invisible gas that makes about 20%-22% of the earth's atmosphere is known as
- oxygen
- nitrogen
- argon
- carbon
A thin layer that is held in place by gravity and provides us with oxygen is known as
- temperature
- season
- atmosphere
- weather
The percentage composition of nitrogen in air is
- 58%
- 68%
- 78%
- 88%
The second step of fractional distillation is heating the mixture so that components evaporate at their
- boiling point
- freezing point
- neutral point
- none of them
In respiration, living organisms take in oxygen and give out
- water vapor
- argon
- carbon dioxide
- nitrogen
Class 6 Science Mock Tests
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