Q. The Vindhyan system of rocks is important for the production of

Answer

Correct Answer : Precious stones and building materials

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

Answer

Correct Answer : 2, 3, 4, 1