Q. What is the correct sequence of these areas in descending order of their coal reserves?
1. Himalayas
2. Chhotta Nagpur
3. Chhattisgarh
4. Son Valley
1. Himalayas
2. Chhotta Nagpur
3. Chhattisgarh
4. Son Valley
β
Correct Answer: (D)
2, 3, 4, 1
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