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GS Paper IUPSC Prelims 2009
Physical Geography
Question No. 102Interactive Test Mode
00:00
+2-0.66

Q102. In the structure of planet Earth, below the mantle, the core is mainly made up of which one of the following?

In the structure of planet Earth, below the mantle, the core is mainly made up of which one of the following?

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 2009 • Geography

Correct Answer: Option (C) — Iron

Concept & Option Breakdown

Standard Reference Verified

Earth's core (composed of a liquid outer core and a solid inner core) is predominantly made up of heavy metals, primarily nickel and iron (often referred to as the 'NIFE' layer).

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2009 (Q102)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicGeography → Physical Geography
Official Answer KeyOption (C) — Iron

Related & Repeated Prelims PYQs (1)

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1996 • Q34280% Match

Which one of the following elements is alloyed with iron to produce steel which can resist high temperatures and also have high hardness and abrasion resistance

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Frequently Asked Questions — UPSC Prelims 2009 Q102

What is the official answer for UPSC Prelims 2009 GS Paper I Question 102 (Geography)?

The official UPSC answer key for this 2009 Geography (Physical Geography) question is Option (C): "Iron". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2009 question belong to?

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

To solve Physical Geography 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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