11. Which of the following is/are the characteristic/characteristics of Indian coal? 
1. High ash content
2. Low sulphur content
3. Low ash fusion temperature

Select the correct answer using the codes given below.

1. 1 and 2 only

2. 2 only

3. 1 and 3 only

4. 1, 2 and 3

Correct Answer :

1 and 2 only