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Class 9 Social Science — Chapter 3: Atmosphere and Climate

72 practice questions · 24 Easy · 24 Medium · 24 Hard

Practise Class 9 Social Science Chapter 3, "Atmosphere and Climate", with 72 NCERT-aligned multiple-choice questions. The set is split into 24 Easy, 24 Medium and 24 Hard questions, so you can warm up on the fundamentals and then push into the exam-level problems that separate top scorers in CBSE Board exams and the JEE & NEET foundation years.

"Atmosphere and Climate" is one of the chapters where dates, cause-and-effect reasoning and map/source interpretation really pays off. Each MCQ on this chapter is timed and uses exam-grade marking (+2 correct, −1 wrong, 0 skipped), training the same accuracy-under-pressure that real papers demand. Every question carries a short explanation, so a wrong answer becomes a quick lesson rather than a dead end — the fastest way to close gaps before a test.

Use this chapter as targeted revision: attempt the Easy set first to confirm your basics on Atmosphere and Climate, then move to Medium and Hard to test application and problem-solving. Your accuracy, streaks and XP save automatically, and the chapter feeds into your overall Class 9 Social Science mastery score. A few sample questions are shown below; sign in free to practise all 72.

Sample questions

Q1Easy

Which gas makes up the largest proportion of the Earth's atmosphere by volume?

A.Carbon dioxide
B.Oxygen
C.Nitrogen✓ correct
D.Argon
Why

Nitrogen makes up about 78% of the atmosphere by volume, the largest share of any gas.

Q2Medium

A weather balloon rises steadily and a sensor records temperature falling, then beginning to rise again. The point where temperature stops falling and starts rising marks the boundary between the:

A.Thermosphere and exosphere
B.Mesosphere and thermosphere
C.Troposphere and stratosphere✓ correct
D.Stratosphere and mesosphere
Why

In the troposphere temperature falls with height, but in the stratosphere it rises again due to ozone absorbing UV rays, so the turning point is the tropopause between them.

Q3Hard

Assertion (A): Temperature rises with height in the stratosphere but falls with height in the troposphere. Reason (R): The stratosphere is heated mainly by ozone absorbing ultraviolet radiation, while the troposphere is heated mostly from the Earth's surface below. Choose the correct option.

A.A is true but R is false
B.Both A and R are true, but R is not the correct explanation of A
C.Both A and R are true, and R is the correct explanation of A✓ correct
D.A is false but R is true
Why

Surface heating warms the lower troposphere so it cools upward, while ozone absorbing UV warms the stratosphere upward; R correctly explains the opposite temperature trends in A.

Atmosphere and Climate — FAQs

What does Class 9 Social Science Chapter 3 (Atmosphere and Climate) cover on XamBaaz?+

It covers 72 NCERT-aligned MCQs on "Atmosphere and Climate" — 24 Easy, 24 Medium and 24 Hard — each with a timed quiz and an instant explanation, suitable for CBSE Board exams and the JEE & NEET foundation years.

Are these "Atmosphere and Climate" questions free to practise?+

Yes — sign in with Google to practise "Atmosphere and Climate" free. Full unlimited access is ₹999/year (limited-time launch price), with no per-chapter charges.

How should I revise "Atmosphere and Climate" for the exam?+

Start with the Easy quiz to confirm your fundamentals, then attempt Medium and Hard for application-level practice. Review each explanation, retry the questions you miss, and track your accuracy on this chapter until it is consistently high.

Practise all 72 questions free

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