RBI Grade B – General Awareness & Current Affairs
Indian Geography – Study Notes
Purpose of these notes – To give you a quick, clear, and exam‑ready understanding of India’s geography.
How to use – Read the simple explanations, memorize the key points, practice the worked example, and review the summary before the exam.
1. Simple Explanation
India is the 7th largest country in the world by land area (≈ 3.29 million km²) and has a diverse topography ranging from the Himalayan mountain system in the north to the Indian Ocean in the south.
Its landscape can be grouped into six major land‑forms:
- Himalayan Range
- Hill Stations & Plateaus
- Northern Plains
- Peninsular Plateau
- Coastal Plains
- Islands
Understanding these helps in answering questions about climate, resources, transportation, and socio‑economic development.
2. Key Points (Bulletised for Easy Recall)
| Category | Details |
|---|---|
| Area | 3,287,263 km² (land) + 2,595,300 km² (water) |
| Population (2025 est.) | 1.4 billion (≈ 17.5% of world pop.) |
| Capital | New Delhi (National Capital Territory) |
| Official Language | Hindi (official), English (associate) |
| Time Zone | Indian Standard Time (UTC+5:30) |
| Major Geographical Features | |
| Himalayas | |
| - Highest peak: K2 (8,611 m) in Ladakh | |
| - Main ranges: Western, Central, Eastern, Sikkim, Indian Trans-Himalaya | |
| Rivers | |
| - Indus (3,180 km) – flows through Khyber Pakhtunkhwa, Punjab (Pakistan) | |
| - Ganga (2,525 km) – flows through Uttarakhand, Bihar, West Bengal | |
| - Brahmaputra (2,900 km) – originates in Tibet, flows through Assam | |
| - Godavari, Krishna, Narmada, Tapti, Mahanadi – major peninsular rivers | |
| Plateaus | Deccan Plateau – largest, covers 2.1 million km²; Aravalli, Shivalik, Vindhya, Satpura, Narmada |
| Coastlines | 7,511 km on the Arabian Sea (west) and Bay of Bengal (east) |
| Islands | Andaman & Nicobar, Lakshadweep, and other smaller islands |
| Climate Zones | Tropical (west coast, south), Subtropical (north), Alpine (Himalayas) |
| Natural Resources | Coal, iron ore, bauxite, mica, natural gas, petroleum, minerals, fertile alluvial soils |
| Major Economic Zones | 1. Northern Plains – agriculture (rice, wheat). 2. Southern Coastal – IT/ITeS, manufacturing. 3. Western & Eastern industrial belts. |
| Transport Corridors | 1. North‑South Corridor (NH‑44). 2. East‑West Corridor (NH‑48). 3. Railway Network – 1.2 m km. |
Quick Facts for RBI Exam
- Largest state by area: Rajasthan (342,239 km²)
- Smallest state by area: Goa (3,285 km²)
- Largest state by population: Uttar Pradesh (≈ 200 M)
- Smallest state by population: Sikkim (≈ 0.6 M)
- Longest coastline: 7,511 km
- Highest peak in India: K2 (8,611 m) – 2nd highest in the world
3. Worked Example
Question (sample RBI style):
“The distance between the capitals of Rajasthan (Jaipur) and Gujarat (Gandhinagar) is approximately 800 km. If a freight truck travels at an average speed of 60 km/h, estimate the time required to cover this distance. Also, calculate the fuel consumption assuming the truck uses 25 litres per 100 km.”
Solution Steps
-
Time required
[ \text{Time} = \frac{\text{Distance}}{\text{Speed}} = \frac{800\text{ km}}{60\text{ km/h}} \approx 13.\overline{3}\text{ h} ]
≈ 13 h 20 min. -
Fuel consumption
[ \text{Fuel per 100 km} = 25\text{ L} ]
[ \text{Fuel for 800 km} = \frac{800}{100} \times 25 = 8 \times 25 = 200\text{ L} ]
Answer
- Time ≈ 13 h 20 min
- Fuel consumption ≈ 200 litres
Tip: For RBI, it is often enough to give rounded figures: 13 hrs & 200 L.
4. Quick Revision Summary
| Topic | Quick Points |
|---|---|
| Himalayas | Highest peaks (K2), main ranges, watershed for major rivers |
| Rivers | Indus, Ganga, Brahmaputra (source, course, tributaries) |
| Plateaus | Deccan (major mineral resources), Aravalli, Vindhya |
| Coastal Plains | West (Arabian Sea) & East (Bay of Bengal) – major ports |
| Climate | Tropical, Subtropical, Alpine; monsoon patterns |
| States & Capitals | 28 states + |