Why does wood not burn with a burning matchstick ?
Wood does not burn with a burning matchstick because the ignition temperature of the wood is high and matchstick burns out soon. It needs to he heated for a longer period so, it does not burn with burning matchstick.
List conditions under which combustion can take place.
Conditions necessary for combustion are :
(i) Presence of combustible substance.
(ii) Attainment of ignition temperature.
(iii) Proper supply of air to provide oxygen.
A liquid fuel, used in homes is __________
Fuel must be heated to its __________ before it starts burning.
Fire produced by oil cannot be controlled by ___________ .
Burning of wood and coal causes __________ of air.