Question

what is known as black gold ? A Coal. B Petroliyam. C Both a&b.

Answer 1

C) Both a & b
coal and petroleum are both known as black gold

Answer 2

Answer:

Petroleum

Black gold is a term applied to oil or petroleum, which is black when it comes out of the ground and is worth a great deal of money. Prior to the mid-19 th century, oil from animal tallow (fat) and whale blubber was used as a lubricant and fuel.