Question

☺ ☺ Why petroleum is called 'BLACK GØLĐ'? ☺ ☺

Answer 1

Petroleum is also known as Black Gold - because when crude oil is extracted from the land it is black in color. People call it gold because of its oils and value . It is very difficult to find.

Answer 2

When petroleum is extracted in the form of crude oil it is black in colour and it is called black gold because of its economic value.......