Q. Which of the following rock systems in India is the main source of coal deposits?
Answer: Gondwana system
Notes: Gondwana rock systems in India is the main source of coal deposits.

This question is part of 40000+ General Studies MCQ Series Course on GKToday Android app. Question Number: 91 in Indian Geography - Mines, Minerals, Coal, Coal Fields, Oil & Natural Gas in above course in App.