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Question No. 7Interactive Test Mode
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Q7. With reference to the water on the planet Earth, consider the following statements: 1. The amount of water in the rivers and lakes is more than the amount of groundwater. 2. The amount of water in polar ice caps and glaciers is more than the amount of groundwater. Which of the statements given above is/are correct?

With reference to the water on the planet Earth, consider the following statements:

  1. The amount of water in the rivers and lakes is more than the amount of groundwater.
  2. The amount of water in polar ice caps and glaciers is more than the amount of groundwater.

Which of the statements given above is/are correct?

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

Official Answer Key & Detailed Solution

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Official UPSC Answer KeyUPSC Prelims 2021 • Environment and Ecology

Correct Answer: Option (B) — 2 Only

Concept & Option Breakdown

Standard Reference Verified
  • Statement 1 is incorrect: Global freshwater distribution follows: Ice Caps and Glaciers (~68.7%) > Groundwater (~30.1%) > Lakes (~0.26%) > Soil Moisture > Atmosphere > Rivers (~0.006%). Groundwater volume vastly exceeds the freshwater found in rivers and lakes.
  • Statement 2 is correct: Ice caps and glaciers account for nearly 69% of all freshwater, which is significantly more than groundwater (~30%).
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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2021 (Q7)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicEnvironment and Ecology → Ecology & Ecosystems
Official Answer KeyOption (B) — 2 Only

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Frequently Asked Questions — UPSC Prelims 2021 Q7

What is the official answer for UPSC Prelims 2021 GS Paper I Question 7 (Environment and Ecology)?

The official UPSC answer key for this 2021 Environment and Ecology (Ecology & Ecosystems) question is Option (B): "2 Only". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2021 question belong to?

This question belongs to GS Paper I under the subject "Environment and Ecology" and micro-topic "Ecology & Ecosystems". You can explore all repeated questions from Ecology & Ecosystems 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 Ecology & Ecosystems UPSC Prelims question using option elimination?

To solve Ecology & Ecosystems 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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