The material A is a fossil fuel which is extracted from 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 the process C, then it gives three products D, E and F. The product D is used as a reducing agent 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 process i) B and ii)C. D)what are i) D, ii) E and iii)F?
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