Q. Consider the following statements about “coal reserves” in India::
1. Anthracite coal has the highest calorific value.
2. Lignite coal gives high moisture content.
3. Talcher coalfield is located in Karnataka and Andhra Pradesh.
How many of the statements given above is/are correct?
Answer: B
Notes:
Explanation:
- Anthracite is the best quality of coal which carries 80 to 95 per cent carbon content. It ignites slowly with a blue flame. It has the highest calorific value. It is found in small quantities in Jammu and Kashmir.
- Lignite is often brown in colour. It carries 40 to 55 per cent carbon content. It is an intermediate stage which happens during the alteration of woody matter into coal.
- It has high moisture content, so it gives smoke when burnt. It is found in Rajasthan, Lakhimpur (Assam), and Tamil Nadu.
- Odisha has the second largest coal reserves in the country, and it carries more than 24 per cent of the total coal reserves. It produces about 15 per cent of the total coal production of India.
- Most of the coal deposits of the state are found in Sambalpur, Dhenkanal, and Sundargarh districts.
- Talchar coalfield of Odisha stretches over Dhenkanal and Sambalpur districts and covers an area of about 500 sq km.
Source: NCERT
