Indian Geography and Physical Features
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Rapid summary for last-minute revision before your exam.
- India’s landmass: 3.28 million sq km; world’s 7th largest; divided into 28 states and 8 union territories
- Major Mountain Ranges: Himalayas (Himadri, Himachal, Shiwaliks), Western/Eastern Ghats, Vindhyas, Aravallis
- Major Rivers: Ganga-Brahmaputra system (North), Narmada-Tapti-Mahanadi (Central), Godavari-Krishna-Cauvery (Peninsular)
- Climate Types: Tropical monsoon (most of India), Alpine (Himalayas), Arid/Desert (Thar), Coastal (moderate)
- Soil Types: Alluvial (North), Black Cotton (Deccan), Red (South), Laterite (Western/Eastern), Forest soils
- ⚡ India has 7 major soil types; each supports different agriculture — a common exam question
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Indian Geography and Physical Features
India’s diverse geography shapes its agriculture, economy, climate, and settlement patterns — all of which are relevant for banking exams given their impact on economic activity.
India’s Location and Boundaries
Geographic Position
- Located in the Northern Hemisphere and Eastern Hemisphere
- Latitudinal extent: 8°4’N to 37°6’N (Kashmir to Kanyakumari)
- Longitudinal extent: 68°7’E to 97°25’E (Gujarat to Arunachal Pradesh)
- Tropic of Cancer (23°30’N) divides India into two halves
Boundaries
- North: Himalayas (China, Nepal, Bhutan)
- Northwest: Pakistan, Afghanistan
- East: Bangladesh, Myanmar
- South: Indian Ocean (Arabian Sea on west, Bay of Bengal on east)
- Coastline: 7,516.6 km (mainland) + additional 1,197 km from islands
- Island territories: Andaman & Nicobar Islands (Bay of Bengal), Lakshadweep (Arabian Sea)
Major Physical Divisions of India
1. The Himalayan Mountains
The Himalayas are the youngest and highest mountain range in the world.
Three Parallels:
- Greater Himalayas (Himadri): Highest; snow-capped peaks; includes Nanda Devi (7,816m), K2 (Pakistan-administered), Kangchenjunga (8,586m)
- Lesser Himalayas (Himachal): Middle ranges; 2,000-5,000m; includes Mussoorie, Shimla hills
- Sub-Himalayas/Siwaliks (Shiwaliks): Southernmost; 500-1,500m; flat valleys (Doons)
Himalayan Divisions:
- Punjab Himalayas: Between Indus and Sutlej
- Kashmir Himalayas: Between Indus and Sutlej
- Kumaon Himalayas: Between Sutlej and Kali
- Nepal Himalayas: Kali to Teesta
- Assam Himalayas: Teesta to Brahmaputra
Significance: Source of India’s major rivers; spiritual significance; tourism; biodiversity
2. The Indo-Gangetic Plain
- Fertile alluvial plain formed by Indus, Ganga, and Brahmaputra river systems
- Extends from Punjab in west to Assam in east
- Punjab Plain: Bounded by Indus and Sutlej; heavily irrigated
- Ganga Plain: Largest; most densely populated; major agriculture
- Brahmaputra Plain (Assam): Eastern part; prone to floods
3. The Peninsular Plateau
India’s peninsular plateau is one of the oldest landmasses on Earth.
Two Divisions:
- Central Highlands: Malwa Plateau (bounded by Vindhyas and Aravallis), Bundelkhand, Baghelkhand, Chota Nagpur Plateau (Jharkhand, West Bengal, Odisha, Chhattisgarh)
- Deccan Plateau: South of the Narmada; triangular shape
- Western Ghats (Sahyadris): Continuous mountain range along western edge; 1,500-2,500m; includes Mullayanagiri (Karnataka, 1,930m)
- Eastern Ghats: Discontinuous; lower; 900-1,100m
- Satpura Range: Central India; forms watershed between Narmada and Tapti
4. The Thar Desert
- Location: Western Rajasthan; part of Gujarat
- Characteristics: Sandy; arid; low rainfall (<150mm/year); extreme temperature variation
- Great Indian Desert: Also called Thar Desert
5. Coastal Plains
Western Coastal Plain (Arabian Sea side):
- Narrow; 50-100 km wide
- Konkan Coast: Mumbai to Goa
- Malabar Coast: Kerala
- Has estuaries, backwaters (Kerala), natural harbors
Eastern Coastal Plain (Bay of Bengal side):
- Broader than western; 100-150 km wide
- Mahanadi Delta: Largest delta in India
- Krishna-Godavari Delta: Combined delta of two rivers
- Coromandel Coast: Tamil Nadu coast
- Has deltas, lagoons, Chennai port
6. Islands
Lakshadweep:
- Coral islands off western coast (Arabian Sea)
- 36 islands; Kavaratti is capital
- Minicoy, Andrott, Agatti
Andaman & Nicobar:
- Volcanic and coral islands
- Southernmost point: Indira Point (Great Coco Island)
- Indira Point: India’s southernmost point on mainland
Major Rivers of India
Himalayan Rivers (Perennial)
- Indus: Transboundary; originates in Tibet; flows through Ladakh; enters Pakistan; five tributaries (Jhelum, Chenab, Ravi, Beas, Sutlej — remember: “J-C-R-B-S”)
- Ganga: Origins in Gangotri (Bhagirathi) and Alaknanda (Devprayag); major tributaries: Yamuna, Ghaghara, Gandak, Kosi; empties into Bay of Bengal via Ganga Delta
- Brahmaputra: Flows through Assam; known as Yarlung Tsangpo in Tibet; major tributaries: Manas, Teesta, Subansiri; merges with Ganga to form Meghna in Bangladesh
Peninsular Rivers
East-Flowing (Bay of Bengal):
- Mahanadi: Odisha; Hirakud Dam
- Godavari: Largest peninsular river; 1,465 km; Maharashtra to Bay of Bengal; tributaries: Penganga, Pranhita, Indravati, Sabari
- Krishna: Maharashtra-Karnataka-Andhra Pradesh; Almatti Dam
- Cauvery: Karnataka-Tamil Nadu; KRS Dam; sacred river of South India
West-Flowing (Arabian Sea):
- Narmada: Central India; runs through Rift Valley between Vindhyas and Satpuras; Sardar Sarovar Dam
- Tapti: Central India; runs parallel to Narmada; empties into Gulf of Khambhat
River Basin Planning: India has 20 major river basins; interlinking of rivers (National River Linking Project) to address regional water imbalances
Climate of India
Monsoon Climate
India’s climate is dominated by the Southwest Monsoon (June-September).
Monsoon Mechanism:
- Differential heating of land and sea creates low pressure over Indian subcontinent
- Southeast trade winds cross equator and become southwest monsoon winds
- Rise over Western Ghats → heavy rainfall (Cherrapunji, Mawsynram — world’s wettest places)
- Retreating monsoon (October-November) brings cyclones to eastern coast
Seasons:
- Winter (Jan-Feb): Cold, dry; north India affected by western disturbances
- Hot Weather/Summer (March-May): Hot, dry; heat waves in north; pre-monsoon thunderstorms
- Southwest Monsoon (June-Sept): Most rainfall; 75% of annual rainfall
- Post-Monsoon/Northeast Monsoon (Oct-Dec): Retreating monsoon; cyclones on eastern coast
Natural Vegetation
Forest Types in India:
- Tropical Evergreen (Assam, Western Ghats) — high rainfall areas
- Tropical Deciduous/Monsoon (Most of India) — shedding leaves in dry season
- Tropical Dry (Rajasthan, Deccan) — arid areas
- Montane (Himalayas) — altitude-based gradation
- Mangrove (Sundarbans, Odisha) — tidal forests
Forest Cover: ~24% of India’s land area (target: 33%)
Soil Types of India
| Soil Type | Location | Characteristics |
|---|---|---|
| Alluvial | Indo-Gangetic plain, river valleys | Fertile; loamy; good for agriculture |
| Black Cotton | Deccan plateau (Maharashtra, MP, Gujarat) | Rich in iron/magnesium; swells when wet |
| Red | Peninsular India (South of Vindhyas) | Porous; less fertile; iron oxide content |
| Laterite | Western/Eastern Ghats, Odisha | Hard; poor fertility; used for building |
| Forest/Mountain | Himalayan region | Light; acidic; depth varies |
| Desert | Western Rajasthan | Sandy; low organic matter |
| Saline/Alkaline | Arid areas, coastal | White crust; unsuitable for agriculture |
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