BharatNotes India: Physical Environment is Part 2 of NCERT's Class XI geography course, the regional companion to Fundamentals of Physical Geography. It takes India's place on the globe, the rocks and relief built by the Indian plate, the rivers that drain them, the monsoon, the forests that follow the rainfall, and the hazards that turn these into disasters. The current book, Reprint 2026-27, has six chapters. The rationalisation dropped the chapter on Soils; these pages keep it, labelled "Retained chapter", because soils remain in the GS1 syllabus. Our page for Natural Hazards and Disasters is therefore numbered 07, while it is Chapter 6 in the current book, and each page says which NCERT chapter it follows. Every page prints NCERT's statement first and the dated official record beside it: NCERT's coastline of 7,517 km against the revised 11,098.81 km, its Everest of 8,848 m against the 8,848.86 m announced in December 2020, its forest and mangrove figures against the Forest Survey's 2023 report.
For UPSC the book is the baseline of GS1's physical geography of India (relief, drainage, climate, vegetation) and of the disaster-management part of GS3, and Prelims draws on it for latitudes, rivers and their tributaries, monsoon terms and protected areas.
The chapters
| Site page | NCERT chapter (Reprint 2026-27) | What it covers |
|---|---|---|
| 1. India — Location | Chapter 1 | Latitude and longitude limits, the 82°30'E standard meridian and Indian Standard Time, size and the subcontinent, the coastline (NCERT's and the revised figure), the seven land neighbours with the Home Ministry's border lengths, and the maritime neighbours |
| 2. Structure and Physiography | Chapter 2 | The Indian plate's journey, the three geological divisions and six physiographic divisions, the Himalayan ranges and peaks, the northern plain's belts, the Peninsular plateau and its hills, the Western and Eastern Ghats, the desert, the coastal plains and the islands |
| 3. Drainage System | Chapter 3 | Basins and divides, Himalayan against Peninsular rivers, the evolution of the Himalayan drainage, the Indus, Ganga and Brahmaputra systems with their tributaries, the Peninsular rivers, drainage patterns, and the use of river water |
| 4. Climate | Chapter 4 | Unity and diversity in the monsoon climate, the onset mechanism, El Niño, the four seasons, the IMD's 1971-2020 rainfall normals and onset dates, the distribution of rainfall, local storms, and the 2026 monsoon in IMD's figures |
| 5. Natural Vegetation | Chapter 5 | Forest types and their rainfall bands, montane forests, wetlands and mangroves, forest policy, wildlife decline and conservation, biosphere reserves, Project Tiger and Project Elephant, with the dated official counts |
| 6. Soils | Dropped in the rationalisation (the 2021-22 edition's Chapter 6), retained here | Factors of soil formation, the soil profile, NCERT's eight soil groups and the ICAR classification, soil degradation with the two official estimates, and soil conservation |
| 7. Natural Hazards and Disasters | Chapter 6 | NCERT's classification of disasters, earthquakes and the seismic zones, tropical cyclones, floods, droughts and landslides, NCERT's three stages of disaster management, the Disaster Management Act and its 2025 amendment, and the global frame from Yokohama to Sendai |
Source: NCERT, India: Physical Environment, Class XI, contents page, Reprint 2026-27 (kegy1ps.pdf).
What the current book no longer prints
The rationalisation also removed passages from the chapters it kept. Comparing the 2021-22 and 2026-27 texts:
- Structure and Physiography: the Himalayan regional divisions (Kashmir, Himachal-Uttarakhand, Darjiling-Sikkim, Arunachal and the eastern hills, with the karewas and Loktak) and the Indian Desert passage.
- Drainage System: the smaller west-flowing rivers of Gujarat, Maharashtra, Karnataka, Goa and Kerala.
- Climate: the factors of India's climate, the winter and summer weather mechanisms (jet streams, western disturbances, tropical cyclones), the variability of rainfall, and the Koeppen table of India's climatic regions.
- Natural Vegetation: the "Forest Cover in India" section and the descriptions of four biosphere reserves (Nilgiri, Nanda Devi, Sunderbans, Gulf of Mannar).
- Natural Hazards and Disasters: the structure of a tropical cyclone and the consequences of cyclones.
How to read the book for the exam
- Read the two geography books together. The plate tectonics, atmospheric circulation, landforms and biodiversity of Fundamentals of Physical Geography are the processes; this book is where they happen in India. A Mains answer on the monsoon or on Himalayan hazards needs both.
- Keep NCERT's figures and the official ones side by side. Prelims statements can test either, so every page prints both with the date and the body that published each.
- Learn the lists in their order. The Himalayan ranges from south to north, and the northern plain's belts from the Shiwalik foot southwards (Bhabar, Tarai, then the Bhangar and Khadar alluvium): the pages keep NCERT's order so that a statement question can be checked against it.
- Date the live items. The 2026 monsoon (87 per cent of the long period average, IMD), the seismic zoning code (the 2025 revision withdrawn in 2026, so the 2016 code stands), the Disaster Management (Amendment) Act, 2025, and the protected-area counts: each page gives the status as of October 2026 and names the record.
Sources used across the book
- NCERT, India: Physical Environment, Reprint 2026-27 (whole-book zip) and the 2021-22 edition for the dropped chapter and passages; NCERT Class IX, Contemporary India I, where the Class XI book leaves out the figures.
- Government of India records: the India Meteorological Department, the Ministry of Home Affairs, the Forest Survey of India's India State of Forest Report, the Ministry of Environment, Forest and Climate Change, the Bureau of Indian Standards, the National Disaster Management Authority, the Ministry of Agriculture's drought manual, and Press Information Bureau releases.
- Scientific and international records with their own dates: the United States Geological Survey, NICEE (IIT Kanpur), UNESCO and the UN Office for Disaster Risk Reduction.
