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GS Paper IUPSC Prelims 2010
Climatology & Atmosphere
Question No. 47Interactive Test Mode
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+2-0.66

Q47. Which one of the following reflects back more sunlight as compared to the other three ?

Which one of the following reflects back more sunlight as compared to the other three ?

Select the correct option below (or cross out options to eliminate)
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Official Answer Key & Detailed Solution

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Official UPSC Answer KeyUPSC Prelims 2010 • Geography

Correct Answer: Option (C) — Land covered with fresh snow

Concept & Option Breakdown

Standard Reference Verified

Surface reflectivity of shortwave solar radiation is measured by albedo:

  • Land covered with fresh snow has the highest albedo (~80–90%).
  • Sand deserts have an albedo of approximately 30–40%.
  • Paddy crops and grasslands/prairies have an albedo of around 15–25%.
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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2010 (Q47)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicGeography → Climatology & Atmosphere
Official Answer KeyOption (C) — Land covered with fresh snow

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Frequently Asked Questions — UPSC Prelims 2010 Q47

What is the official answer for UPSC Prelims 2010 GS Paper I Question 47 (Geography)?

The official UPSC answer key for this 2010 Geography (Climatology & Atmosphere) question is Option (C): "Land covered with fresh snow". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2010 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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