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Petroleum is often called 'black gold' because:
AIt is mixed with gold particles underground
BIt has great commercial importance — many useful petrochemicals are made from it
CIt looks like molten gold
DIt is sold by weight, like gold
Answer & Solution
Correct answer: B. It has great commercial importance — many useful petrochemicals are made from it
Petroleum yields fuels (petrol, diesel, kerosene), lubricants, paraffin wax, bitumen, and petrochemical feedstocks for plastics, detergents and synthetic fibres. Its dark colour and enormous economic value together earn it the nickname 'black gold'.
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