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GS Paper IUPSC Prelims 2001
Geomorphology
Question No. 309Interactive Test Mode
00:00
+2-0.66

Q309. The approximate age of the Aravallis range is :

The approximate age of the Aravallis range is :

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 2001 • Geography

Correct Answer: Option (D) — 670 million year

Concept & Option Breakdown

Standard Reference Verified

The Aravalli Range is one of the oldest fold mountain systems in the world, formed during the Proterozoic Era (Aravalli-Delhi orogeny). Geological estimates date the prominent orogeny to roughly 670 to 700 million years ago (with basement rocks dating back more than 2 billion years). Among the given options, 670 million years is the closest.

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Question Specifications & Syllabus Mapping

Examination & YearUPSC Civil Services Preliminary Examination 2001 (Q309)
Paper & Marking SchemeGS Paper I • 2 Marks (-0.66 Negative for incorrect response)
Syllabus Subject & TopicGeography → Geomorphology
Official Answer KeyOption (D) — 670 million year

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Frequently Asked Questions — UPSC Prelims 2001 Q309

What is the official answer for UPSC Prelims 2001 GS Paper I Question 309 (Geography)?

The official UPSC answer key for this 2001 Geography (Geomorphology) question is Option (D): "670 million year". Correct attempts carry 2 Marks with -0.66 Negative penalty for wrong answers.

Which UPSC Prelims syllabus topic does this 2001 question belong to?

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

To solve Geomorphology 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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