Combustion and flame easy

Combustion and Flame Quiz

1. Combustion is a chemical process involving:

a) Oxygen b) Hydrogen c) Carbon dioxide d) Nitrogen

2. Which of the following is a combustible substance?

a) Water b) Iron c) Sulphur d) Glass

3. The process of burning a substance in the presence of air is known as:

a) Melting b) Evaporation c) Combustion d) Sublimation

4. The lowest temperature at which a substance catches fire is called:

a) Ignition temperature b) Boiling point c) Melting point d) Freezing point

5. Which gas is evolved during the process of combustion?

a) Oxygen b) Nitrogen c) Carbon dioxide d) Hydrogen

6. Which of the following is not a combustible substance?

a) Wood b) Paper c) Plastic d) Iron

7. The substance which does not undergo combustion is:

a) Hydrogen b) Oxygen c) Charcoal d) Water

8. The substance which rapidly catches fire on exposure to air is:

a) Paper b) Metal c) Glass d) Plastic

9. A flame is produced due to the:

a) Solidification of wax b) Expansion of air c) Evaporation of water d) Combustion of vapours

10. Which gas supports combustion?

a) Nitrogen b) Carbon dioxide c) Oxygen d) Helium