Indian Geography – Study Notes for JLPT (General Awareness & Current Affairs)
Aim: Understand the major physical and human‑geographic features of India, its administrative structure, and key facts that frequently appear in competitive exams and current‑affairs sections of the JLPT.
1. Simple Explanation
India is a vast country in South Asia that stretches from the Himalayas in the north to the Indian Ocean in the south, and from the Arabian Sea in the west to the Bay of Bengal in the east. It is the 7th largest country by land area and the 2nd most populous country in the world. Its geography is extremely diverse, featuring:
- Mountain ranges (Himalayas, Vindhya, Satpura)
- Plains (Ganges, Indo‑Gangetic, Deccan)
- Deserts (Thar, Kutch)
- Coastal plains and river deltas (Ganges Delta, Brahmaputra Delta)
- Islands (Andaman & Nicobar, Lakshadweep)
The diversity of landforms gives rise to varied climates, biodiversity, and cultural landscapes.
2. Key Points
| Category | Details |
|---|---|
| Physical Geography | • Northern Himalayas – Highest peaks (Mount Everest, Kanchenjunga). • Indo‑Gangetic Plain – Fertile alluvial plains, major rice & wheat belt. • Deccan Plateau – Elevated plateau, rich mineral resources. • Thar Desert – 200 km wide, sparse vegetation. |
| Climate Zones | • Arctic – None. • Sub‑arctic – None. • Tropical – Majority of the country. • Dry – Thar Desert, semi‑arid western interior. • Humid – Bay of Bengal coast, Northeast. |
| Major Rivers | Ganga, Yamuna, Brahmaputra, Godavari, Krishna, Narmada, Tapti, Pi Reservoir. |
| Coastline | ~7,500 km (including islands). |
| Area | 3.287 million km² (includes 2.4 million km² of land and 0.9 million km² of water). |
| Population | 1.4 billion (2024 estimate). |
| Administrative Units | 28 states + 8 Union Territories (UTs). |
| Capital | New Delhi (Union Territory). |
| Major Cities | Mumbai, Delhi, Kolkata, Chennai, Bangalore, Hyderabad, Ahmedabad, Pune, Jaipur, Lucknow. |
| Important Biodiversity | Western Ghats (UNESCO World Heritage), Himalayan region, Sundarbans mangrove forest. |
| Key Economic Corridors | IT corridor (Bangalore‑Hyderabad), Chittagong–Kolkata Sea‑Port, Mumbai‑Bangalore Industrial Corridor. |
Quick Facts
- Highest Point: Kangchenjunga – 8,586 m (Asia’s 3rd highest).
- Longest River: Ganga – 2,525 km.
- Largest State (by area): Rajasthan – 342,239 km².
- Smallest State (by area): Goa – 3,702 km².
- Largest UT (by area): Ladakh – 59,146 km².
- Smallest UT (by area): Lakshadweep – 32 km².
3. Worked Example
Problem:
Calculate the approximate percentage of India’s total land area that is covered by the Deccan Plateau.
Given:
- Total area of India (land + water) ≈ 3.287 million km².
- Land area ≈ 2.4 million km².
- Deccan Plateau area ≈ 700 000 km².
Solution:
-
Compute the fraction of land area covered by Deccan Plateau:
[ \frac{700,000}{2,400,000} \approx 0.2917 ]
-
Convert to a percentage:
[ 0.2917 \times 100 \approx 29.2% ]
Answer: Approximately 29 % of India’s land area is part of the Deccan Plateau.
Why this matters: The Deccan is rich in minerals (coal, iron ore, mica) and supports major agricultural zones (cotton, pulses).
4. Quick Revision Summary
- India – 7th largest land area, 2nd largest population.
- Geographic regions: Himalayas, Indo‑Gangetic Plain, Deccan Plateau, Thar Desert, coastlines, islands.
- Climate: Tropical, dry, humid – no arctic or sub‑arctic zones.
- Major rivers: Ganga, Brahmaputra, Yamuna, Godavari, Krishna.
- Coastline: ~7,500 km.
- States & UTs: 28 states, 8 UTs, capital New Delhi.
- Key biodiversity sites: Western Ghats, Sundarbans, Himalayan flora.
- Economic corridors: IT hub (Bangalore‑Hyderabad), sea‑port (Chittagong‑Kolkata), industrial corridor (Mumbai‑Bangalore).
Tip for JLPT: When answering geography-related current‑affairs questions, mention the state/UT or region, its capital, the major river or mountain range, and a key fact (e.g., “Rajasthan – the largest state, capital Jaipur, known for Thar Desert”).