All Chapters

India as a Geographical Unit

India's location, size, time zone, political units, maritime zones, and strategic geopolitical position in South Asia.

Rock System — Geological History of India

India's geological evolution from Archean basement rocks through Gondwana coal beds to Deccan Traps — the foundation of its mineral wealth.

Plate Tectonics and India's Physical Origins

The Himalayan Ranges — Part I

Origin, structure, and division of the Himalayan system — Himadri, Himachal, Shiwaliks — with passes, longitudinal valleys, and regional ranges.

The Himalayan Ranges — Part II

Regional Himalayan ranges from Kashmir to Arunachal: Punjab, Kumaon, Nepal, Sikkim, and Assam Himalayas, plus Trans-Himalayan features.

Glaciers and the Cryosphere of India

Himalayan glaciers and the Third Pole — glacier inventory, Siachen/Gangotri/Zemu, retreat causes, Karakoram Anomaly, GLOF risk (Sikkim 2023), permafrost, NMSHE, and ICIMOD.

Indo-Gangetic-Brahmaputra Plain

The world's largest alluvial plain — formation, divisions (Bhabar, Terai, Khadar, Bhangar), river systems, and agricultural significance.

Peninsular Plateau

The ancient Peninsular Plateau: Central Highlands, Deccan Plateau, Western and Eastern Ghats, and major hill ranges with their economic and ecological importance.

Deserts of India — Hot Desert (Thar) and Cold Deserts (Ladakh, Spiti, Lahaul)

The Thar (Great Indian Desert) — NCERT's 4th physiographic division: dune types, saline lakes, Luni River, Great Indian Bustard, Indira Gandhi Canal, and traditional water harvesting.

Coastline, Coastal Plains, and Indian Islands

India's 11,098.81 km coastline (revised April 2025), western and eastern coastal plains, and island territories — Andaman & Nicobar and Lakshadweep.

India's Island Territories — Andaman & Nicobar and Lakshadweep

Drainage Systems of India

India's river systems — Himalayan (perennial, antecedent) vs Peninsular (rain-fed, consequent) rivers, major basins, and inter-basin water transfer.

Water Resources of India

India's water resources — surface water basins, groundwater crisis (world's largest user), 89 Ramsar wetlands, major lakes, glaciers, traditional harvesting systems, and Ken–Betwa interlinking project.

Inter-State River Water Disputes & River Interlinking

Indian Monsoons

Mechanism and onset of India's southwest monsoon, its two branches, ENSO/El Niño links, and the retreat pattern that shapes India's climate.

Indian Climate

India's diverse climate types under the Köppen system — tropical monsoon to cold desert — with seasonal variations, extremes, and UPSC-relevant regional data.

Cyclones, Tropical Weather Systems & Disaster Risk Reduction

Natural Hazards and Disasters in India

India's six major natural hazards — cyclones, earthquakes, floods, droughts, landslides, tsunamis — seismic zones, NDMA framework, and post-2004 disaster management infrastructure.

Climate Change and India's Changing Geography

Natural Vegetation of India

India's five forest types, vegetation zones by rainfall/altitude, biodiversity hotspots, Biosphere Reserves, and conservation framework.

India State of Forest Report (ISFR) 2023

Key findings of ISFR 2023 (18th edition): forest cover, tree cover, mangroves, carbon stock, bamboo, and state-wise changes vs global GFRA 2025 data.

Indian Soils

India's eight major soil types — alluvial, black, red, laterite, arid, saline, peaty, forest — their distribution, properties, and UPSC-relevant crop associations.

Wetlands, Mangroves & Ramsar Sites of India

Biodiversity and Protected Areas of India

India's biodiversity — 4 hotspots (Western Ghats, Eastern Himalayas), 22 protected area categories, Project Tiger (3,167 tigers), Project Elephant, 18 Biosphere Reserves, wildlife corridors, endangered species, invasive plants, WPA 1972, and Kunming-Montreal GBF 30×30 target.

Environmental Laws, EIA & Pollution Geography of India

Mineral and Energy Resources of India

India's minerals (coal, iron ore, bauxite, mica, thorium) and energy — coal belt distribution, Mumbai High, nuclear three-stage programme, 100 GW solar, Bhadla Park, critical minerals, lithium in J&K.

Agriculture and Agro-Climatic Zones of India

India's agriculture — ICAR's 15 agro-climatic zones, kharif/rabi/zaid seasons, major crops (rice, wheat, millets, jute, tea, coffee, spices), irrigation types, Green Revolution legacy, and key schemes (PMKSY, PM-KISAN, e-NAM).

Fisheries & Blue Economy of India

Economic Geography of India

Marine Geography of India

India's marine geography — EEZ (2.37 million km²), UNCLOS zones, ocean currents, coral reefs (bleaching), mangroves (Sundarbans), deep-sea mining, Blue Economy, and marine fisheries.

Indian Ocean — Oceanography and Maritime Significance

India's Land Borders — Physical Geography and Geopolitics

Northeast India — Geography, Ecology and Strategic Significance

Population Geography of India

Urbanisation and Human Settlements in India

Tribes of India

UNESCO World Heritage Sites & India's Cultural Geography

GIS, Remote Sensing, and Spatial Planning in India

GIS, remote sensing, and spatial planning — ISRO satellites, NavIC, Bhuvan, NISAR, Svamitva drones, National Geospatial Policy 2022, AI in crop/flood/landslide mapping, UPSC Mains 2025 topic.