Question

what is petroleum? why it is called black gold?

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

Answer:

Petroleum is referred to as Black Gold. This name itself is an indication of its importance to humans. It is called black gold because. It is black in colour when crude oil is extracted from the soil. Because of its oil and worth, people call it gold.