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Question No. 42Interactive Test Mode
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Q42. What could be the main reason/reasons for the formation of the African and Eurasian desert belt? 1. It is located in the sub-tropical high-pressure cells. 2. It is under the influence of warm ocean currents. Which of the statements given above is/are correct in this context?

What could be the main reason/reasons for the formation of the African and Eurasian desert belt?

  1. It is located in the sub-tropical high-pressure cells.
  2. It is under the influence of warm ocean currents.

Which of the statements given above is/are correct in this context?

Select the correct option below (or cross out options to eliminate)

Official Answer Key & Detailed Solution

Ready to check the official UPSC Answer Key?

Click any option above to test yourself under exam conditions, or reveal the explanation directly.

Official UPSC Answer KeyUPSC Prelims 2011 • Geography

Correct Answer: Option (A) — 1 only

Concept & Option Breakdown

Standard Reference Verified
  • Statement 1 is correct: The African and Eurasian desert belt (Sahara, Arabian, Thar) lies between 20°–30° N latitude under subtropical high-pressure cells. In these zones, descending air masses from the Hadley cell compress and warm adiabatically, inhibiting cloud formation and causing extreme aridity.
  • Statement 2 is incorrect: Deserts are associated with cold ocean currents along western continental margins (which stabilize air and suppress precipitation) or continentality, not warm ocean currents.
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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2011 (Q42)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicGeography → Climatology & Atmosphere
Official Answer KeyOption (A) — 1 only

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Frequently Asked Questions — UPSC Prelims 2011 Q42

What is the official answer for UPSC Prelims 2011 GS Paper I Question 42 (Geography)?

The official UPSC answer key for this 2011 Geography (Climatology & Atmosphere) question is Option (A): "1 only". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2011 question belong to?

This question belongs to GS Paper I under the subject "Geography" and micro-topic "Climatology & Atmosphere". You can explore all repeated questions from Climatology & Atmosphere in Acme AI's 3D Prelims PYQ Realm or practice 50 full-length and sectional tests in the APT Prelims Test Series.

How can I solve this Climatology & Atmosphere UPSC Prelims question using option elimination?

To solve Climatology & Atmosphere questions in UPSC Prelims, identify extreme modifiers, verify core NCERT conceptual definitions, and eliminate mutually contradictory statement pairs before locking your final option.

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