FIRE EXTINGUISHER NAFED QUESTIONS AND ANSWERS
Conductive heat - CORRECT ANSWER✅✅Transfer of heat through a solid
Convective heat transfer - CORRECT ANSWER✅✅Transfer of heat through a fluid or gas(air)
Radiant heat - CORRECT ANSWER✅✅Transfer of heat without direct contact, or heating a fluid or air
between objects
Class A Fire - CORRECT ANSWER✅✅Common Combustibles such as paper, wood, furniture, clothing
Class B Fire - CORRECT ANSWER✅✅Flammable liquid or gas
Class C Fire - CORRECT ANSWER✅✅Electrical Equipment
Class D Fire - CORRECT ANSWER✅✅Exotic Metals, dry powder, special application
Class K Fire - CORRECT ANSWER✅✅Commercial Kitchens - Wet Chemicals
Flash Point - CORRECT ANSWER✅✅the minimum temperature at which a liquid fuel produces enough
vapor to burn
Auto ignition temperature - CORRECT ANSWER✅✅The lowest temperature at which a combustible
material ignites in air without a spark or flame.
Vapor Density - CORRECT ANSWER✅✅The weight of an airborne concentration (vapor or gas) as
compared to an equal volume of dry air.
Specific Gravity - CORRECT ANSWER✅✅ratio of a liquids weight compared with the weight of an equal
volume of water
Conductive heat - CORRECT ANSWER✅✅Transfer of heat through a solid
Convective heat transfer - CORRECT ANSWER✅✅Transfer of heat through a fluid or gas(air)
Radiant heat - CORRECT ANSWER✅✅Transfer of heat without direct contact, or heating a fluid or air
between objects
Class A Fire - CORRECT ANSWER✅✅Common Combustibles such as paper, wood, furniture, clothing
Class B Fire - CORRECT ANSWER✅✅Flammable liquid or gas
Class C Fire - CORRECT ANSWER✅✅Electrical Equipment
Class D Fire - CORRECT ANSWER✅✅Exotic Metals, dry powder, special application
Class K Fire - CORRECT ANSWER✅✅Commercial Kitchens - Wet Chemicals
Flash Point - CORRECT ANSWER✅✅the minimum temperature at which a liquid fuel produces enough
vapor to burn
Auto ignition temperature - CORRECT ANSWER✅✅The lowest temperature at which a combustible
material ignites in air without a spark or flame.
Vapor Density - CORRECT ANSWER✅✅The weight of an airborne concentration (vapor or gas) as
compared to an equal volume of dry air.
Specific Gravity - CORRECT ANSWER✅✅ratio of a liquids weight compared with the weight of an equal
volume of water
