Composition and Structure of the Atmosphere — Important Questions
ICSE · Class 9 · Geography
84 important questions from Composition and Structure of the Atmosphere for ICSE Class 9 Geography, with answers.
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Important Questions from Composition and Structure of the Atmosphere
Which of the following are features of air?
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Colourless,Tasteless,Odourless
Air is colourless, tasteless and odourless.
Which two gases together make up about 99% of clean dry air?
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Nitrogen and oxygen
Nitrogen and oxygen make up about 99% of clean dry air.
What percentage of clean dry air is nitrogen?
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78%
Nitrogen forms 78% of clean dry air.
What percentage of clean dry air is oxygen?
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21%
Oxygen forms 21% of clean dry air.
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