Question

Why is coal often called ""black gold"? give two reasons.

Answer 1

The coal is called black gold because it is the main source of energy in India.
Like a gold, the coal is used for various purpose.

Answer 2

because coal is used in many indusrial uses ..so,this is the 1 reason


2 reason--- because some greedy people use this coal for earning money and the diamond is also made by the blak coal....



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