Class 10 Chemistry MCQs – Practice Test for Exam Prep

Composition of Atmosphere Multiple Choice Questions with Answers – PDF Download

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Learn "Composition of Atmosphere MCQ" App Download with MCQ: Percentage of hydrogen in the air is; with answers: 0.99, 0.8, 0.5, and 0.25. Solve Environmental Chemistry I Atmosphere Quiz Questions, download Apple Book (Free Chapter) to increase chemistry educational access.

Composition of Atmosphere MCQs PDF Download – Prep Test

MCQ 1: Percentage of hydrogen in the air is:

0.99
0.8
0.5
0.25

MCQ 2: What is the term used for the envelope of gases and water vapor surrounding the planet earth?

air
atmosphere
environment
biome

MCQ 3: Percentage of helium in the air is:

0.000624
0.000524
0.000724
0.000824

MCQ 4: Approximately, what percentage of water vapor is contained by the air in the tropical rain forest?

0.01
0.02
0.03
0.04

MCQ 5: Percentage of methane in the air is:

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