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- 1. Multiple Choice
The substances which have very low ignition temperature will
catch fire easily
will not catch fire
catch fire after some time
none of these
- 2. Multiple Choice
CNG and LPG are the examples of
solid fuels
liquid fuels
gaseous fuels
they aren't fuels
- 3. Multiple Choice
what is combustion
chemical process
physical process
none of these
both a & b
- 4. Multiple Choice
Ignition temperature is
Lowest temperature at which a substance catches fire
Highest temperature at which a substance catches fire
Any temperature
1000 C
- 5. Multiple Choice
Fuel may be
Solid
Liquid
Gas
All of the three
- 6. Multiple Choice
Combustion is a reaction in which a substance reacts with
hydrogen
Nitrogen
Oxygen
Chlorine
- 7. Multiple Choice
Water cannot be used as a fire extinguisher to put out
Burning coal
Electrical fires
Burning wood
Forest fires
- 8. Multiple ChoiceWater is not used to control fires involving electrical appliances.FalseTrue
- 9. Multiple Choice
Substance which catch fire are called
Acids
Bases
Burners
Combustible
- 10. Multiple Choice
Essential requirements for producing fire are
Fuel
Air
Heat
All of these
- 11. Multiple Choice
A good fuel is on which is
Cheap
Produces large number of heat
Readily available
All of these
- 12. Multiple Choice
Combustion always results as flames
True
False
- 13. Multiple Choice
What are the three essential requirements for combustion
Fuel
Supply of oxygen
Water
Heat
- Answer choicesTagsAnswer choicesTags