Question

Which of the following process is correct in the process of conversion of wood into coal?

(a) wood → peat → lignite → bituminous coal

(b) peat → wood → lignite → bituminous coal

(c) lignite → peat → wood → bituminous coal

(d) wood → lignite → peat → bituminous coal

Answer 1

The correct answer is (a) wood → peat → lignite → bituminous coal

To explain: The wood is converted into coal steps wise. It is in the order of wood →peat →lignite →bituminous coal. The bituminous coal is later converted into anthracite or graphite.