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
This question was addressed to me by my college director while I was bunking the class.
The doubt is from Solid Fuels topic in division Fuel Technologies of Applied Chemistry