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WorksheetsCh2
Total questions: 16
Worksheet time: 8mins
Which of the following is not a fuel?
Steel
Disel
Petrol
Buring of lpg is an example of____________ combustion.
Slow
Explosion
Rapid
The colour of the cooking gas flame is____________.
Red
Blue
Pink
Purple
Which is the least hot region of the flame?
Middle zone
Outermost zone
Innermost zone
The unburnt carbon particles are present in the __________ zone of the candle flame?
Middle zone
Non luminous middle zone
Luminous middle zone
Outer zone
___________ means to control and extinguish the unwanted fire.
Fire fighting
Fire fighter
Water fighter
Red fighter
Is cloth and paper are combustible substance?
True
False
__________is necessary for combustion to take place.
Water
Oxygen
Fire
All of these
Petrol catches fire earlier than _______________.
Wood
Kerosene
Coal
Core
None of these
What is the full form of SPM?
Suspended particular matter
Support particular matter
Suspended particulate matter
None of these
_________ is a chemical process which react with ___________ to produce heat and ____________.
combustion,nitrogen, sound
Combustion, oxygen,light
Combustion,hydrogen,carbon monoxide
Rapid combustion,oxygen,light
__________ is an example of rapid combustion.
Matchstick
Fuel
Candle
Phosphorous
A liquid fuel, used in homes is ______.
LPG
Kerosene
Petrol
Coal
Fire produced by oil cannot be controlled by ______.
Air
Water
Oil
Nitrogen
Good fuels have
low ignition temperature and high calorific value.
low ignition temperature and low calorific value.
high ignition temperature and high calorific value.
high ignition temperature and low calorific value.
Which poisonous gas is formed as a result of incomplete combustion (a) .
