Indian Geography – Kerala PSC Study Notes
(For General Awareness & Current Affairs)
1. Simple Explanation
Indian geography is the study of the physical features, climate, natural resources, and human settlements across the Indian sub‑continent. It is divided into two main branches:
| Branch | Focus |
|---|---|
| Physical Geography | Mountains, plains, plateaus, rivers, lakes, deserts, climate zones, soil types. |
| Human (Socio‑Economic) Geography | Population distribution, agriculture, industries, infrastructure, migration, regional disparities. |
Understanding Indian geography helps in answering questions related to natural resources, disaster management, demographic trends, and regional development—all frequent topics in Kerala PSC exams.
2. Key Points
A. Physical Geography
| Feature | Details |
|---|---|
| Mountains | 1. Himalayas – North, highest peak K2 (8,611 m). 2. Aravalli Range (Rajasthan). 3. Western Ghats – biodiversity hotspot. 4. Eastern Ghats – fragmented. |
| Plateaus | 1. Deccan Plateau – covers 30 % of India, rich in basalt. 2. Shivalik Hills – foothills of Himalayas. |
| Plains & Valleys | 1. Ganga Plains (North). 2. Indus Plains (Northwest). 3. Kaveri Valley (South). |
| Rivers | Major rivers: Ganga, Yamuna, Brahmaputra, Indus, Godavari, Narmada, Krishna, Kaveri. 10 major rivers > 2,000 km long. |
| Deserts | Thar Desert (Rajasthan & Haryana). |
| Lakes & Water Bodies | 1. Sunderbans (riverine delta). 2. Backwaters (Kerala). |
| Climate Zones | 1. Tropical monsoon (south & west). 2. Humid subtropical (north). 3. Arid (Thar). 4. Temperate (Himalayas). |
| Natural Resources | Coal, iron ore, bauxite, mica, limestone, salt, oil & gas, forests. |
| Geological Zones | 1. Archean (Karnataka). 2. Proterozoic (Chotanagpur). 3. Phanerozoic (Deccan Traps). |
B. Human Geography
| Aspect | Highlights |
|---|---|
| Population | 1. 1.4 billion (2023). 2. 17 % live in urban areas. 3. Highest density: Kerala (~860 persons/km²). |
| Languages | 22 scheduled languages; Hindi & English official. |
| Religion | Hinduism (79 %), Islam (14 %), Christianity (2.3 %), Sikhism, Buddhism, Jainism. |
| Agriculture | 66 % of workforce; major crops: rice, wheat, cotton, tea, coffee, spices. |
| Industries | IT & software (Kochi, Trivandrum), textiles (Bangalore), heavy engineering (Nagpur), shipbuilding (Kochi). |
| Infrastructure | 4 national highways, 5 major ports (Kochi, Chennai, Mumbai, Kolkata, Visakhapatnam), 3 metros (Bangalore, Delhi, Mumbai). |
| Disaster Vulnerability | 1. Floods (Ganga, Brahmaputra plains). 2. Drought (Thar). 3. Earthquakes (Kolkata belt). 4. Cyclones (Bay of Bengal). |
C. Economic Geography
| Region | Economic Profile |
|---|---|
| North India | Agriculture (wheat, rice), textile (Punjab, Haryana), IT (Delhi NCR). |
| Central India | Coal mining (Chhattisgarh), steel (Nagpur). |
| East India | Tea & coffee (Assam, Meghalaya), jute (West Bengal). |
| West India | Oil & gas (Rajasthan, Gujarat), petrochemicals (Mumbai), IT (Bangalore). |
| South India | IT (Bangalore, Hyderabad), spices (Kerala), textiles (Tamil Nadu). |
| Kerala | High literacy, tourism (Backwaters, hill stations), coconut & spices, remittances from Gulf. |
D. Important Statistics (FY 2023–24)
| Metric | Value |
|---|---|
| Total area | 3,287,263 km² |
| Forest cover | 24 % of land area |
| River length | 14,000 km (major rivers) |
| Population density | 464 persons/km² |
| GDP contribution by state (Top 5) | Maharashtra, Tamil Nadu, Gujarat, Karnataka, Delhi |
E. Current Affairs Snapshot (Oct 2024)
| Date | Event | Relevance |
|---|---|---|
| 01‑Oct‑2024 | Kerala announced a new back‑waters conservation plan – 120 km of canals to be protected. | Affects local ecology & tourism. |
| 12‑Oct‑2024 | India’s Ministry of Environment approved “India’s first geothermal park” in Gujarat (Kutch). | Renewable energy development. |
| 20‑Oct‑2024 | Hyderabad declared the first ‘Digital City’ in India under Smart City Scheme. | Urban development, IT hub. |
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