SSC CGL Geography – Atmosphere – Structure, Pressure Belts & Winds – Level 2 · Exam Level · Tier I Sprint

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SSC CGL Geography – Atmosphere – Structure, Pressure Belts & Winds – Level 2 · Exam Level · Tier I Sprint – 15 questions, subject: Geography – India & World. Every question has the correct answer with a one-line explanation; tap "Show Answer". Free practice for TNPSC, UPSC, SSC, Bank and RRB exams – Shanmugam IAS Academy, Coimbatore.

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1.  
Statement-basedConsider:
I. The troposphere is thicker over the equator than over the poles.
II. Temperature rises with height in the mesosphere.
Which is/are correct?

Correct Answer: B [Only I]

Explanation:

About 18 km at the equator vs 8 km at the poles; the mesosphere gets colder upward.

2.  
Match the followingMatch:
P. Troposphere Q. Stratosphere R. Mesosphere S. Ionosphere
1. radio waves reflected 2. meteors burn up 3. ozone layer 4. weather

Correct Answer: D [P-4, Q-3, R-2, S-1]

Explanation:

Weather – ozone – meteors – radio, from the ground up.

3.  
Diagram-basedThe figure shows a schematic globe with three marked belts. Which marked belt is the subtropical high-pressure belt?

Correct Answer: A [P]

Explanation:

P is near 30° N (subtropical high); Q is near 60° N (subpolar low); R is the equatorial low.

4.  
Two-quantity comparison
Quantity I: temperature (°C) 3 km above a place where the ground is at 25 °C (normal lapse rate)
Quantity II: 5 °C

Correct Answer: A [Quantity I > Quantity II]

Explanation:

25 − 6.5 × 3 = 25 − 19.5 = 5.5 °C > 5 °C.

5.  
Arrange in orderArrange the layers from the Earth's surface upward: mesosphere, troposphere, thermosphere, stratosphere

Correct Answer: C [troposphere, stratosphere, mesosphere, thermosphere]

Explanation:

Tall Students Make Tasty Eats.

6.  
Odd one outSirocco, Chinook, Bora, Loo

Correct Answer: D [Bora]

Explanation:

Bora (Adriatic coast) is cold; the others are hot or warm winds.

7.  
Assertion–Reason
A: The highest insolation at the surface is received over the subtropical deserts rather than at the equator.
R: Cloud cover is least over the subtropical deserts.

Correct Answer: B [Both A and R are true and R explains A]

Explanation:

Clear skies let more sunlight reach the ground; equatorial clouds reflect part of it.

8.  
How many statements are trueHow many of these statements are true?
I. Trade winds blow from the north-east in the Northern Hemisphere.
II. Westerlies blow from the south-west in the Northern Hemisphere.
III. The Roaring Forties are found in the Northern Hemisphere.
IV. Polar easterlies blow out of the polar highs.

Correct Answer: C [3]

Explanation:

III is false – the Roaring Forties are in the Southern Hemisphere.

9.  
Which pair (local wind – region) is correctly matched?

Correct Answer: A [Kalbaisakhi – West Bengal]

Explanation:

Loo – north Indian plains; Mistral – France; Chinook – Rockies.

10.  
Diagram-basedThe figure shows the movement of air between the sea and the land (arrows). Which statement is correct?

Correct Answer: A [It is a sea breeze, which blows by day]

Explanation:

Surface air flows from the sea to the land and rises over the land – the land is hotter, so it is daytime.

11.  
The sea-level pressure is 1,010 mb. Using the rule of about 1 mb for every 10 m, what is the approximate pressure at 300 m?

Correct Answer: B [980 mb]

Explanation:

300 ÷ 10 = 30 mb less → 980 mb.

12.  
Reverse question“I am the low-pressure zone where the trade winds of both hemispheres meet and air rises.” What am I?

Correct Answer: D [Inter-Tropical Convergence Zone (ITCZ)]

Explanation:

The ITCZ lies in the equatorial low (doldrums).

13.  
Spot My Mistake“In the Southern Hemisphere, if you stand with your back to the wind, low pressure is on your left.” What is correct?

Correct Answer: C [Low pressure is on your right]

Explanation:

Buys Ballot's law is reversed in the south: back to the wind → low on the right.

14.  
Which of these is a greenhouse gas?

Correct Answer: D [Carbon dioxide]

Explanation:

CO₂ absorbs long-wave radiation given out by the Earth.

15.  
The westerlies of the Southern Hemisphere are stronger than those of the Northern Hemisphere mainly because:

Correct Answer: C [there is very little land to slow them by friction]

Explanation:

Open ocean from about 40° S to 60° S.

➤ Full notes, shortcuts and every answer explained – SSC CGL 2026 Geography – India & World book (₹149): www.shanmugamiasacademy.in/study-materials/ssc-cgl-geography-india-world

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