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Combustion And Flame

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12

What are different types of combustion?

Combustion is of three types :

(i) Rapid combustion : When gases burn rapidly to produce heat and light it is called rapid combustion.

(ii) Spontaneous combustion : When any material like phosphorus burns on its own without any apparent cause, it is called spontaneous combustion.

(iii) Explosion : When combustion takes place with sudden release of heat and light and a large amount of gas in form of bang, it is called explosion as in case of crackers and bombs.

A liquid fuel, used in homes is __________


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.

Burning of wood and coal causes __________ of air.


Fire produced by oil cannot be controlled by ___________ .


Fuel must be heated to its __________ before it starts burning.

ignition temperature