1. Burning is a chemical reaction specifically known as:
A. Oxidation
B. Sublimation
C. Evaporation
D. Condensation
2. Which three components are required for a fire to occur, often referred to as the "Fire Triangle"?
A. Fuel, Nitrogen, and Heat
B. Fuel, Oxygen, and Heat
C. Carbon Dioxide, Fuel, and Spark
D. Oxygen, Water, and Fuel
3. When a substance burns in a plentiful supply of oxygen, the process is called:
A. Incomplete combustion
B. Thermal decomposition
C. Complete combustion
D. Slow oxidation
4. What are the two primary products formed during the complete combustion of a hydrocarbon?
A. Carbon and Hydrogen
B. Carbon Monoxide and Water
C. Carbon Dioxide and Water vapor
D. Oxygen and Carbon
5. Which gas is necessary for combustion to take place?
A. Carbon Dioxide
B. Nitrogen
C. Argon
D. Oxygen
6. If a fuel burns in a limited supply of oxygen, which dangerous, odorless gas is produced?
A. Carbon Dioxide
B. Carbon Monoxide
C. Sulfur Dioxide
D. Nitrogen Oxide
7. Combustion is an example of an exothermic reaction because it:
A. Absorbs energy from the surroundings
B. Releases energy in the form of heat and light
C. Results in a decrease in temperature
D. Only occurs at very low temperatures
8. The minimum temperature at which a substance catches fire and starts burning is called its:
A. Melting point
B. Boiling point
C. Ignition temperature
D. Evaporation point
9. Which of the following substances would be classified as non-combustible?
A. Paper
B. Wood
C. Glass
D. Petrol
10. What is the black, powdery substance (soot) produced during incomplete combustion mainly composed of?
A. Pure Oxygen
6. Unburnt Carbon particles
C. Water vapor
D. Nitrogen
11. Which type of combustion occurs instantly with the release of a large amount of gas, heat, and light, often accompanied by sound?
A. Spontaneous combustion
B. Rapid combustion
C. Explosion
D. Slow combustion
12. Using a fire blanket to extinguish a small fire works primarily by:
A. Lowering the temperature of the fuel
B. Removing the fuel source
C. Cutting off the supply of oxygen
D. Increasing the ignition temperature
13. In a candle flame, which zone is the hottest?
A. The innermost dark zone
B. The middle luminous zone
C. The outer non-luminous zone
D. The wick itself
14. Magnesium ribbon burns in air with a dazzling white flame to produce:
A. Magnesium Carbonate
B. Magnesium Oxide
C. Magnesium Sulfate
D. Magnesium Chloride
15. Why is water NOT used to extinguish electrical fires or oil fires?
A. Water acts as a fuel for these fires
B. Water can conduct electricity or cause oil to splatter
C. Water turns into oxygen when heated
D. Water increases the ignition temperature of oil
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