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Write brief answers to the following questions:
 
Write the characteristics and some important uses of coal.
 
Characteristics of coal are as follows:
(i). It is a , black combustible fuel.
(ii). It is a .
(iii). It mainly contains .
(iv). When heated in the air, it burns and produces mainly gas.
(v). It is a source of energy.
 
Some important uses of coal are as follows:
(i). It is used as a fuel in homes and industry and at for generating electricity.
(ii). It is used to make .