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Topic 8

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Static GK — Indian Geography & Physical Features

🟢 Lite — Quick Review (1h–1d)

Rapid summary for last-minute revision before your exam.

Indian Geography questions in IBPS PO are often factual and drawn from static knowledge. The key is to memorize key data points — mountain ranges, rivers, states, capitals, and important geographical facts.

Quick high-yield facts:

  • India: 7th largest country by area, 2nd largest by population
  • States: 28 states, 8 Union Territories
  • Mountain ranges: Himalayas (8,849m highest point — Kangchenjunga), Western/Eastern Ghats, Vindhyas, Aravallis
  • Major rivers: Ganga, Brahmaputra, Yamuna, Godavari, Krishna, Mahanadi, Narmada, Tapti
  • Climatic zones: Himalayan, Northern Plains, Peninsular plateau, Desert, Coastal, Islands

⚡ Exam tip: Questions often combine geography with related topics — e.g., “Which state is the largest producer of rice?” or “Which dam is on the Narmada?” Combine geography with agriculture and resources for better retention.

🟡 Standard — Regular Study (2d–2mo)

Standard content for students with a few days to months.

India’s Physical Geography:

Mountains & Mountain Ranges

Himalayas:

  • Length: ~2,500 km; Width: 250-400 km
  • Three parallel ranges:
    1. Greater Himalayas (Himadri): Highest, more than 6,000m; includes peaks like Everest (8,849m), K2
    2. Lesser Himalayas (Himachal): 3,500-5,000m; includes Shimla, Nainital regions
    3. Shiwaliks (Outer Himalayas): 900-1,500m; youngest range

Other Important Mountain Ranges:

  • Aravalli Range: Oldest fold mountains in India; runs NW-SE across Rajasthan, Haryana, Delhi; old mining area (Delhi-Jaipur corridor)
  • Vindhya Range: Marks the southern boundary of the North Indian Plains; blocks (Bengal basin)
  • Satpura Range: Parallel to Vindhyas; Narmada river flows between them (Narmada-Son-Vindhya line)
  • Western Ghats (Sahyadris): Runs along western coast; continuous chain; UNESCO World Heritage; 1,600 km long; altitude 900-1,800m; forms backdrop to Mumbai
  • Eastern Ghats: Discontinuous hill ranges along eastern coast; lower elevation; interspersed with river valleys (Mahanadi, Godavari, Krishna)

Important Peaks:

  • Kangchenjunga (8,586m) — 3rd highest, on India-Nepal border
  • Nanda Devi (7,824m) — highest entirely in India (Kali River forms its boundary)
  • Kamet (7,756m), Saltoro Kangri (7,742m), Saser Kangri (7,672m)

Rivers of India

Himalayan Rivers (Perennial):

  • Ganga System: Ganga (2,525 km) → Yamuna (1,376 km, joins at Prayagraj), Ghaghara, Gandak, Kosi, Gomti; major tributaries — left bank: Gomti, Ghaghara, Kosi; right bank: Yamuna, Sone
  • Brahmaputra: 1,800 km in India; originates in Tibet (called Yarlung Tsangpo); enters India via Arunachal Pradesh (called Dihang/Siang); major tributaries: Subansiri, Manas, Tista
  • Indus: Enters India at Ladakh; tributaries: Zanskar, Shyok, Nubra; total length ~3,180 km; flows to Pakistan

Peninsular Rivers:

  • Godavari: Longest river in peninsular India (1,465 km); rises in Maharashtra; flows through Telangana, Andhra Pradesh; major tributaries: Pravara, Purna, Indravati, Sabari; navigable up to Rajahmundry; also called “Dakshina Ganga”
  • Krishna: 1,400 km; rises in Maharashtra; tributaries: Koyna, Tungabhadra (itself fed by Tunga and Bhadra rivers from Western Ghats)
  • Mahanadi: 851 km; rises in Chhattisgarh; flows through Odisha; Hirakud Dam built on it
  • Narmada: 1,312 km; rises in Madhya Pradesh (Amarkantak); flows westwards between Vindhya and Satpura; Sardar Sarovar Dam (Gujarat)
  • Tapti: 724 km; flows parallel to Narmada; rises in Satpura range; empties into Arabian Sea via Gulf of Khambhat

Rivers by Basin:

  • Himalayan rivers: Ganga, Brahmaputra, Indus — referred to as “intra-perennial” (flow through all seasons)
  • Peninsular rivers: Major ones are Godavari, Krishna, Mahanadi, Narmada, Tapti, Cauvery

Plains & Plateaus

Indo-Gangetic Plain:

  • Largest alluvial plain in the world; 2,500 km long, 250-500 km wide
  • Created by Indus, Ganga, Brahmaputra river systems
  • Very fertile — supports 40% of India’s population
  • Sub-divided: Punjab plains (NW), Ganga plains (central), Brahmaputra valley (NE)

Peninsular Plateau:

  • 16% of India’s area; ancient landmass (cratonic); covered by lava flows (Deccan Traps)
  • Two divisions: Malwa Plateau (north), Deccan Plateau (south)
  • Chota Nagpur Plateau (JHarkhand/WB): Rich in minerals (coal, iron ore, mica, copper)
  • Deccan Plateau: Basalt rock; black cotton soil (regur); bordered by Western and Eastern Ghats

Coasts & Islands

Coastline:

  • Mainland coast: 6,100 km (5,422 km plus island territories)
  • Eastern coast (Bay of Bengal): Broader continental shelf; deltas form (Mahanadi, Godavari, Krishna, Cauvery); major ports: Paradeep (Odisha), Visakhapatnam, Chennai (Ennore), Tuticorin
  • Western coast (Arabian Sea): Narrow continental shelf; estuaries; major ports: Mormugao (Goa), New Mangalore (Karnataka), Cochin (Kerala), Mumbai (Jawaharlal Nehru Port), Kandla (Gujarat)

Islands:

  • Andaman & Nicobar: 572 islands; Union Territory; Bay of Bengal; Port Blair (capital)
  • Lakshadweep: 36 islands; Arabian Sea; Kavaratti (capital); coral atolls

Deserts:

  • Thar Desert (Rajasthan): 200,000 sq km; inland dune desert; annual rainfall < 250mm
  • Cold Desert: Ladakh (Kargil, Leh); alpine desert; very low precipitation; trans-Himalayan region

🔴 Extended — Deep Study (3mo+)

Comprehensive coverage for students on a longer study timeline.

India’s Climate & Natural Regions:

Climate Types

India has six major climatic subtypes:

  1. Tropical Rainforest (As): Northeast states (Assam, Kerala coast), 200-300 cm rainfall; dense forest
  2. Tropical Savanna (Aw): Most of peninsular India; dry winters, wet summers; 100-200 cm rainfall
  3. Tropical Semi-Arid (As’): Karnataka plateau, Tamil Nadu upland; moderate rainfall
  4. Subtropical Humid (Cwa): Northern plains — hot summers, cool winters; monsoon influenced; 100-150 cm rainfall
  5. Mountain Climate (E): Himalayan region; cool summers, severe winters; altitude affects temperature
  6. Desert Climate (BWh): Rajasthan — very arid; < 25 cm rainfall; extreme temperature variation

Monsoon System:

  • Southwest monsoon (June-September): Primary rainfall; enters via Kerala; covers most of India
  • Northeast monsoon (October-November): Retreating monsoon; affects Tamil Nadu, Andhra Pradesh coast, Odisha
  • Arabian Sea branch vs. Bay of Bengal branch -ITCZ (Inter-Tropical Convergence Zone): Key driver of monsoon; shifts north during summer

Rainfall Data:

  • Wettest: Cherrapunji (12,700 mm annually), Mawsynram (12,500 mm)
  • Driest: Jaisalmer (200 mm)
  • Average: 1,100 mm

Natural Vegetation & Biodiversity

Forest Types:

  • Tropical Evergreen: Western Ghats, NE states; rainfall > 250 cm; no distinct seasons; species: mahogany, ebony, bamboo
  • Tropical Deciduous (Monsoon): Most common (40%); 100-200 cm rainfall; teak, sal, bamboo; Central India, Odisha, MP
  • Tropical Semi-Evergreen: Transition zone between evergreen and deciduous
  • Thorny/Bxeric: Dry areas; Rajasthan, Gujarat, Punjab; babool, khejri
  • Montane (Himalayan): Altitudinal zonation; Alpine meadows, conifers (deodar, pine, spruce)
  • Mangroves: Tidal forests; Sundarbans (largest, West Bengal); deltaic islands of Mahanadi, Godavari, Krishna

Biodiversity Hotspots (India):

  1. Himalayas (Sino-Himalayan region)
  2. Western Ghats & Sri Lanka (Sahul)
  3. Indo-Burma region (Northeast India)
  4. Sundarbans

National Parks & Wildlife:

  • Jim Corbett (Uttarakhand): First national park (1936); tiger reserve
  • Kaziranga (Assam): One-horned rhinoceros
  • Periyar (Kerala): Elephant sanctuary
  • Gir (Gujarat): Asiatic lion
  • Ranthambore (Rajasthan): Tiger
  • Sundarbans (West Bengal): Tiger and mangroves (UNESCO World Heritage)

Mineral Resources

Major Mineral Belts:

  • Chota Nagpur Plateau (Jharkhand, WB, Odisha): India’s richest mineral belt — coal (Jharia, Raniganj), iron ore (Singareni, others), mica, copper, bauxite, limestone
  • Dhanwar belt (Jharkhand): Coal and iron
  • Karnataka plateau (Chitradurga): Iron ore (Kolar Gold Fields closed 2001)
  • Madhya Pradesh (Balaghat): Copper, manganese
  • Rajasthan (Udaipur, Ajmer): Lead, zinc, silver

Key Minerals:

  • Coal: 3rd largest producer globally; Jharkhand, Odisha, Chhattisgarh, West Bengal
  • Iron ore: Top 3 producers; Odisha (Sundergarh), Jharkhand (Singhbhum), Karnataka (Chitradurga, Bellary)
  • Bauxite: Odisha (Kalahandi), Gujarat (Kutch), Madhya Pradesh
  • Manganese: Odisha, Madhya Pradesh, Maharashtra
  • Copper: Jharkhand (Singhbhum), Rajasthan (Khetri), Tamil Nadu (Kanyakumari — closed)
  • Lead/Zinc: Rajasthan (Rampura Agucha, Zawar), Andhra Pradesh
  • Gold: Karnataka (Kolar, Hutti — Raichur); no major new discoveries

Power Resources:

  • Coal: Thermal power (majority of electricity generation)
  • Crude oil: ~2 million barrels/day; major fields: Bombay High (Mumbai), Gujarat, Assam, Rajasthan (Barmer)
  • Natural gas: Associated and non-associated; Krishna-Godavari basin; KG-D6 is major field
  • Renewable: Solar (Rajasthan, Gujarat), Wind (Tamil Nadu, Gujarat, Maharashtra, Karnataka), Hydro (Northeast, Himalayas)

Energy Mix (2024-25):

  • Coal: ~55% of installed capacity
  • Renewable (solar + wind): ~23%
  • Hydro: ~10%
  • Nuclear: ~3%
  • Gas: ~6%