Q.1: What are the advantages of using CNG and LPG as fuels

Q.2: Name the petroleum product used for the surfacing of roads.

Q.3: Describe how coal is formed from dead vegetation. What is this process called

Q.4: a) Name three fossil fuels.

b) Name the process of separation of different constituents from petroleum.

c) Name the least polluting fuel for vehicles.

Q.5. Tick True/False against the following statements.

a) Fossil fuels can be made in the laboratory.

(b) CNG is more polluting fuel than petrol.

(c) Coke is almost a pure form of carbon.

(d) Coal tar is a mixture of various substances.

e) Kerosene is not a fossil fuel.

Q.6. Explain why fossil fuels are exhaustible natural resources.

Q.7.Describe characteristics and uses of coke.

Q.8. Explain the process of formation of petroleum.

Q. 9. The following table shows the total power shortage in India from 1991–1997. Show the data in the form of a graph. Plot shortage percentage for the years on the Y-axis and the year on the X-axis.