Question

Petroleum is referred to as black gold?

Answer 1

Answer:

because crude oil is extracted from the land it is black in colour people called its gold because of its oil and value its very difficult to find so it is know as black gold

Answer 2

Answer:

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.

Explanation:

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