The material A is a fossil fuel which is expected from the earth. It is said to be formed from the buried large land plants by a very slow process B. When A is heated in the absence of air in a process called C, then it gives three products D, E and F. The product D is used as a reducing against in the extraction of metals, the product E is used as an industrial fuel whereas the product F has been traditionally used for metalling the roads.

(a) What could material A be ?

(b) What is (i) Physical state and (ii) Colour, of A ?

(c) Name the processes (i) B and (ii) C.

(d) What are (i) D, (ii) E and (iii) F ?