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 in less amount but economic value is extreme.
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Similar Questions
Q1
Why petroleum is referred to as black gold?
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Q2
Petroleum is also known as Black gold?
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Q3
Which of the following is usually referred to as 'black gold' ?
(a) coke
(b) coal tar
(c) petroleum
(d) coal
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Q4
Petroleum is also called ‘Brown Gold’.
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Q5
Petroleum is called the 'Liquid Gold' because _______.