Across
- 3. The remains of dead vegetation buried under the earth
- 4. petroleum found in India
- 5. global warming
- 7. first oil well
- 8. Which means rock
- 9. aviation fuel in jet aeroplanes
- 10. Inexhaustible
- 13. The process of conversion of coal
Down
- 1. separting various constituents
- 2. 90% of coal
- 6. coal mines in India
- 7. used for making candles and cosmetics
- 11. black viscous liquid
- 12. known as ideal fuel