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GS Paper IUPSC Prelims 2023
Natural Resources
Question No. 237Interactive Test Mode
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Q237. Consider the following statements: Statement-I: India, despite having uranium deposits, depends on coal for most of its electricity production. Statement-II: Uranium, enriched to the extent of at least 60%, is required for the production of electricity. Which one of the following is correct in respect of the above statements?

Consider the following statements: Statement-I: India, despite having uranium deposits, depends on coal for most of its electricity production. Statement-II: Uranium, enriched to the extent of at least 60%, is required for the production of electricity. Which one of the following is correct in respect of the above statements?

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 2023 • Environment and Ecology

Correct Answer: Option (C) — Statement-I is correct but Statement-II is incorrect

Concept & Option Breakdown

Standard Reference Verified

Statement-I is correct: Coal accounts for over 50–55% of India's total electricity generation capacity, despite India having domestic uranium deposits. Statement-II is incorrect: Commercial nuclear power reactors typically require low-enriched uranium (LEU), with U-235 concentrations around 3% to 5% (or natural unenriched uranium in Pressurized Heavy Water Reactors). Uranium enriched to 60% or higher is highly enriched uranium (HEU), while 90%+ is weapons-grade.

Elimination Heuristic & Exam Approach

Nuclear reactors for commercial power production use Low Enriched Uranium (3–5%), not weapons-usable high enrichment (60%+), rendering Statement-II clearly factually false.

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2023 (Q237)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicEnvironment and Ecology → Natural Resources
Official Answer KeyOption (C) — Statement-I is correct but Statement-II is incorrect

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Frequently Asked Questions — UPSC Prelims 2023 Q237

What is the official answer for UPSC Prelims 2023 GS Paper I Question 237 (Environment and Ecology)?

The official UPSC answer key for this 2023 Environment and Ecology (Natural Resources) question is Option (C): "Statement-I is correct but Statement-II is incorrect". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2023 question belong to?

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

Nuclear reactors for commercial power production use Low Enriched Uranium (3–5%), not weaponsusable high enrichment (60%+), rendering StatementII clearly factually false.

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