Available Answers

1. 1.

   Name any two fuels used at home.

2. 2.

   Give any four examples of secondary fuels.

3. 3.

   Name one highly inflammable substance.

4. 4.

   Which property of carbon dioxide is applied in extinguishing fire?

5. 5.

   Define the following terms:
   a) Fuel
   b) Ignition
   c) Combustion
   d) Calorific value

6. 6.

   Solar energy is a better fuel than fossil fuels. Give reasons.