Why is petroleum called black-gold?
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Posted by Saurav Das 5 years, 3 months ago
- 3 answers
Yogita Ingle 5 years, 3 months ago
Petroleum is referred to as 'black gold' because when crude oil is extracted from the land it is black in colour. People call it gold because of its oils and value. It is very difficult to find.
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Aryan Raj 5 years, 3 months ago
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