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Question
Which of the following is also known as the 'black gold'?
Options:
A .  Petroleum
B .  Coal
C .  Natural gas
D .  CNG
Answer: Option A
:
A
Petroleum has great commercial importance, due to which it is also calledthe 'black gold'. Many useful substances are obtained from petroleum. These are termed as 'Petrochemicals'. These are used in the manufacture of detergents, fibres (polyester, nylon, acrylic, etc.), polythene and other manmade plastics.

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