Examine the role of coal as India's most important conventional energy resource. Describe its different grades, their characteristics, and the major coal-producing regions of India.
Generated by claude-sonnet-4-6 · 2026-06-26 13:33 · grounding rag
Model Answer
Role of Coal:
Coal is India's most abundantly available fossil fuel. It is used for power generation, industrial energy supply, and domestic needs. India is highly dependent on coal for meeting its commercial energy requirements. Being a bulky material that loses weight on use, heavy industries and thermal power stations are located near coalfields.
Grades of Coal:
- Peat – Low carbon, high moisture, low heating capacity; formed from decaying plants in swamps.
- Lignite – Low grade brown coal, soft, high moisture content; principal reserves at Neyveli, Tamil Nadu.
- Bituminous – Most popular coal in commercial use; formed by deep burial and high temperatures. Metallurgical (high-grade bituminous) coal is used for smelting iron.
- Anthracite – Highest quality hard coal.
Major Coal-Producing Regions:
- Gondwana coalfields (200 million years old): Damodar Valley (Jharia, Raniganj, Bokaro), Godavari, Mahanadi, Son, and Wardha valleys.
- Tertiary coalfields (55 million years old): Meghalaya, Assam, Arunachal Pradesh, and Nagaland.
Source: Conventional Sources of Energy, Chapter 5
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Explanation
- Examiners expect all four grades named with at least one characteristic each — missing any costs marks.
- Distinguish clearly between Gondwana (metallurgical, older, peninsular) and Tertiary (north-eastern) coalfields.
- The point about coal being bulky and losing weight is a frequently tested detail — include it briefly.
- Keep grade descriptions concise (one line each); the marks split roughly as: role (1 mark), grades (2 marks), regions (2 marks).