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Composition of Atmosphere MCQ (Multiple Choice Questions) PDF Download
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The MCQ: The gas which has percentage equal to 78% in air is the; "Composition of Atmosphere" App Download (Free) with answers: Oxygen; Hydrogen; Carbon dioxide; Nitrogen; to study high school online courses. Solve Atmosphere Composition Quiz Questions, download Apple eBook (Free Sample) for distance learning.
Composition of Atmosphere MCQs: Questions and Answers PDF Download
The percentage of nitrogen in air is equal to
- -0.12
- 0.21
- 0.01
- 0.05
The gas which has percentage equal to 78% in air is the
- oxygen
- hydrogen
- carbon dioxide
- nitrogen
The mixture of gases around us is regarded as
- ecosystem
- atmosphere
- environment
- climate
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