C:\UPSC\GS1\2018\Q-4.txt
GeographyEXAMINEYear 201810 Marks
Concept / Statute•Directive•Institution / Stakeholder
Why is Indian Regional Navigation Satellite System (IRNSS) needed? How does it help in navigation?
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: NavIC / IRNSS, Satellite Navigation, Geospatial Technology
Recurring Theme Trend: “NavIC / IRNSS”
17 questions across 14 yrsFrequency of UPSC CSE Mains questions testing this core concept, landmark doctrine, or foundational syllabus theme (2013-2026)
20132
20141
20151
20161
20172
20182
20193
20201
20210
20222
20231
20240
20250
20261