Answers to the given questions

Ans 1.
 The different types of fuels are:
1. Solid fuels
2. Liquid fuels
3. Gaseous fuels
4. Bio fuels
5. Fossil fuels
6. Nuclear fuels

Ans 2.
The properties of a fuel are:
1. They produce heat and light energy when burned
2. It has a calorific value
3. It burns efficiently

Ans 3.
The properties for an ideal fuel are:

1. The fuel should have high calorific value.

2. The fuel should have proper ignition temperature.

3. The rate of combustion should be balanced and moderate.

4. The content of non-volatile substances should be as low as possible.

5. There should be no poisonous liberated during the combustion.

6. It should have a high efficiency rate.

7. The fuel should be easily available in plenty.

8. The fuel should be available at a low cost.

9. There should be convenience in transporting the fuel 

10. The fuel should be easily to handle and easy to store.