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NCERT Class 7 Geography Chapter 4

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Questions and Answers

What is the layer of gases surrounding the Earth called?

Troposphere

Atmosphere (correct)

Ionosphere

Stratosphere

What is the composition of air?

80% oxygen, 10% nitrogen, 10% argon

60% oxygen, 30% nitrogen, 10% other gases

78% nitrogen, 21% oxygen, 1% other gases (correct)

70% nitrogen, 20% oxygen, 10% carbon dioxide

Which gas is most abundant in the Earth's atmosphere?

Nitrogen (correct)

Carbon Dioxide

Oxygen

Argon

Study Notes

Atmosphere

The layer of gases surrounding the Earth is called the atmosphere.

Composition of Air

The composition of air is a mixture of different gases.
The air is primarily composed of:
- Nitrogen (78%)
- Oxygen (21%)
- Argon (0.93%)
- Carbon dioxide (0.04%)
- Other gases (0.03%)

Most Abundant Gas

Nitrogen is the most abundant gas in the Earth's atmosphere.

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Description

Test your knowledge of the composition of air and the Earth's atmosphere in this NCERT Class 7 Geography Chapter 4 quiz. Explore questions on the layer of gases surrounding the Earth and the most abundant gas in the atmosphere. Sharpen your understanding of air composition and atmospheric layers with this quiz.