Q: Which one of the following types of coal has high calorific value and lowest volatile content?
(a)Anthracite
(b)Subbituminous
(c)Bituminous
(d)Lignite
Correct Answer: (a)
The correct answer is (b): Subbituminous. Subject: Geography | Sub-topic: Economic & Mineral Geography Note: This answer was determined through AI-based research. Verify against the official answer key when available.