(a) What is petroleum? Where does petroleum occur? (b) Describe the process of the formation of petroleum.

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Answer

(a) Petroleum is a naturally occurring element that is in a liquid state. It is either yellow or black in color. Petroleum is referred to as Black Gold. It is usually found in geological formations underneath the earth’s crust. When it is drilled from the ground in the liquid form, it is called crude oil.

(b) Dead organisms that got buried in the sea millions of years ago got covered with layers of sand and clay. Due to lack of air, high temperature, and high pressure, these dead organisms got transformed into petroleum and natural gas.

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