The type of combustion in which a material suddenly bursts into flames, without the application of any apparent cause is called
Rapid combustion
Burning
Spontaneous combustion
Slow combustion
Which of the following poisonous gas is produced as a result of incomplete combustion?
Carbon monoxide
Carbon dioxide
Oxygen
Hydrogen
Which of the following is a noncombustible substance?
Coke
Diamond
Coal
Wood
How heat and light are produced in Sun?
Nuclear reaction
Substitution reaction
Combustion
Thermal cracking
Which of the following gas produced can kill persons sleeping in a closed room where coal is burning?
Which of the following helps to putting out the fire in soda-acid fire extinguisher?
CO2
CO2+H2O
H2O
H2+H2O
In foam type fire extinguisher, which of the following products are formed?
2Al(OH)3 + 6H2O + 3NaSO4
2Al(OH)3 + 6CO + 3NaSO4
2Al(OH)3 + 6O2 + 3Na2SO4
2Al(OH)3 + 6CO2 + 3Na2S04
Which of the following is an ideal fuel?
LPG
Petrol
None of these
The substances which vaporize during burning gives
Heat
Flame
Carbon
Which of the following is the rise in temperature of the atmosphere of the earth.
Acid rain
Green house effect
Global warming
Photosynthesis
