give me solution of why is petroleum called black gold (write in copy ) please
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This is because when crude oil is extracted from the land it is black in color. This resource is compared to gold due to its valuable properties and worth too. ... Crude oil is jet black before purification but after purification, it turns golden in color; therefore, it's tagged as Gold.
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petroleum is called black gold because when crude oil is extracted from land it is black in color .
people called it gold because of its oils and value it is very difficult to find...
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