Question

Fossils fuels, which are the main cause of pollution are important sources of energy in-
A.Transport
B.Homes
C.Industries
D.All of them

Answer 1

Hint: We need to know that fossil fuel is mainly used as a fuel which is prepared by using decomposing animals and decomposing plants etc. The fossil fuels mainly contain hydrogen and carbon which is used for the burning of energy and these fuels mainly occur in earth crust. The examples of fossil fuels are natural gas, coal, oil etc.

 Complete answer:
Among the given options, fossil fuels are an important source not only in transport. Hence, option (A) is incorrect.
Among the given options, fossil fuels are an important source not only in homes. Hence, option (B) is incorrect.
Among the given options, fossil fuels are an important source not only in industries. Hence, option (C) is incorrect.
The fossil fuels are used as an important source in transport, homes and industries. Petroleum is used as an important source of fossil fuels in transport. In homes, the cooking gas is the important source of fossil fuels. And in industries, the petrol or coal is used in fire steam engines. Thus, all the options are correct.

Hence, option (D) is correct.

Note:
We need to know that fossil fuels are mainly used as a source of energy which is obtained from the decomposed residues of living organisms which were buried so many millions of years ago. The three factors will allow the conversion of organic matter into three main types of fossil fuels which are oil, coal and natural gas. And those three factors are heat, time and pressure. The fossil fuels have different physical properties and chemical properties.