Across
- 2. The coal which contains 65% carbon
- 3. The largest coal mine in West Bengal
- 5. The lower grade of coal
- 9. Used in dry cleaning
- 10. An alternate source of energy
- 12. An example for solid form of renewable source of energy
- 13. A fossil fuel which is used as a basic ingredient in the manufacturing of fertilizers
- 14. Used in extraction of metals
- 15. Water gas is a composition of Carbon monoxide and _____
- 16. The other name of petrol
Down
- 1. Used in boilers
- 4. black coloured sticky substance which is used for coating the underside of the electric poles
- 6. Petroleum is trapped between these rocks
- 7. Petroleum is also called Liquid Gold because of its _______ importance
- 8. The hardest variety of coal
- 9. A black coloured, viscous, foul smelling liquid
- 11. Conversion of dead plant remains into coal