Countries are phasing out fossil-fuel based energy sources because

1. they contribute to increase in green house gases.
2. they are non-renewable
3. they are expensive
4. All of the above.

You see this sticker (given on the right) on the front windshield of a car. What does it mean?

1. The car is a commercial vehicle.
2. The car uses Compressed Natural Gas as fuel.
3. The car is not fuel efficient.
4. The car uses Cooled Nitrogen Gas as fuel.

Name two main coal bearing areas in India.

Give geographical reasons for the following:

(i) Anthracite is used for domestic purposes.

(ii) Oil refineries are located close to oilfields or near ports.

(iii) The location of coalfields is an important factor in industrial development.