C:\UPSC\GS1\2018\Q-6.txt
GeographyEXAMINEYear 201810 Marks
Concept / Statute•Directive•Institution / Stakeholder
Define mantle plume and explain its role in plate tectonics.
Exact Syllabus Pointer
Physical geography, distribution of key natural resources, factors for industrial location, geophysical phenomena (earthquakes, cyclones, volcanoes).
Connected Questions Across All Papers
Discovered through overlapping concepts: Mantle Plume, Hotspots, Plate Tectonics
Recurring Theme Trend: “Mantle Plume”
6 questions across 14 yrsFrequency of UPSC CSE Mains questions testing this core concept, landmark doctrine, or foundational syllabus theme (2013-2026)
20131
20140
20151
20160
20170
20182
20190
20201
20210
20220
20230
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20260