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Worksheets7.2 COMBUSTION
Total questions: 12
Worksheet time: 6mins
The condition which are required for combustion to take place are:
fuel
heat
oxygen
all of these
Why the candle flame is extinguished when the boy blow?
The saliva from the boy put off the flame
The oxygen is removed from the flame
What does this hazard symbol means?
The substance is explosive
The substance burns easily
The substance supplies oxygen to fires
The substance puts out fires
Which one of the following is not a fossil fuel?
Wood
Coal
Petroleum
Natural Gas
Combustion from solid (wood, paper, cloth) can be extinguish using extinguisher type
water and dry powder
dry powder and foam
foam
carbon dioxide and water
Combustion from liquid (oil, paint, varnish) can be extinguish using extinguisher type
water, foam, carbon dioxide
dry powder, foam, carbon dioxide
foam only
carbon dioxide and water
Combustion from gases (butane,acetylene) can be extinguish using extinguisher type:
water and dry powder
dry powder and carbon dioxide
foam and dry powder
carbon dioxide and foam
The word equation for combustion is: fuel + oxygen --> water + ________ + heat + light /
Perkataan persamaan untuk pembakaran adalah :
bahan api + oksigen -> air + ________ + haba + cahaya
Carbon dioxide / karbon dioksida
Limewater / Air kapur
