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Combustion And Flame

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12

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.

ignition temperature

Fire produced by oil cannot be controlled by ___________ .


Burning of wood and coal causes __________ of air.