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Worksheetscombustion and fuels
Total questions: 10
Worksheet time: 5mins
Which substance give heat and light after combustion
flame
fuel
combustion
none of these
The substances which have very low ignition temperature will
catch fire easily
will not catch fire
catch fire after some time
none of these
CNG and LPG are the examples of
solid fuels
liquid fuels
gaseous fuels
they aren't fuels
ignition temperature is
any temperature at which a substance catches fire
highest temperature at which a substances catches fire
lowest temperature at which a substance catches fire
what is combustion
chemical process
physical process
none of these
both a & b
the products of combustion are
carbon dioxide
oxygen & water
water and fire
The burning of LPG is an example of
rapid combustion
spontaneous combustion
slow combustion
explosion
Which one of the following gases is used in combustion?
Hydrogen
Oxygen
Nitrogen
Carbon dioxide
Which poisonous gas is formed as a result of incomplete combustion?
Coal gas
Carbon di oxide
Carbon monoxide
Nitrogen dioxide
What is the colour of a luminous flame?
Blue
Black
Yellow
Red
