1.

ACROSS4.Also known as crude oil5. Used for surfacing of roads6.The slow process of conversion of dead vegetation into coalDOWN1.It is also known as black lignite2. A hydrocarbon made up of carbon and hydrogen and has a chemical formula CH,3.Thick black-liquid obtained from destructive distillation of coal. ​

Answer»

ANSWER:

1) petroleum

5) BITUMEN

6) carbonizatiob

down

1) subbituminous coal

2) METHAN

3) coal tar

EXPLANATION:



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