Which of the following are true with regard to coal in India?
I. Coal is found in sedimentary rocks
II. The best quality of coal is lignite
III. The largest and oldest coalfied in india is known as the ruhr of india
IV. The Damodar river valley is popularly known as the 'Ruhr of India'
A. I and IV
B. I, II and III
C. I, II and IV
D. II, III and IV
Answer: Option C
Best quality of coal is Anthracite