11. Petroleum is mixture of
12. Purest form of carbon is
13. Refining is
14. The characteristic of coal is
15. The first oil well was drilled in
16. The layer containing petroleum oil & gas is
17. Water is a ..........
18. When coal burns in air then
19. When heated in air produces
20. Which gas is obtained during the processing of coal?
MCQ Multiple Choice Questions and Answers on Coal and Petroleum
Coal and Petroleum Trivia Questions and Answers PDF
Coal and Petroleum Question and Answer
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