Answers

2016-02-20T11:30:35+05:30
It's a lower rank of coal which is inferior in quality. Also known as the brown coal has less carbon content it's less expensive as well and is mostly used in industries . It's less combustible.
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2016-02-20T14:38:14+05:30
It is the lowest quality of coal.
it has the highest moisture contains.
carbon contains in it is around 60%-70%.
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