Q23 of 25 Page 106

Where do you find spontaneous combustion and rapid combustion in your daily life?

Spontaneous combustion is the type of combustion in which the combustible material suddenly starts burning into flames without applying any external agent.

● Such combustion is observed in forest fires where dry leaves catch fire on getting heat from the sun or catch spark from lightening.


● We also observe spontaneous combustion in case of match stick in which phosphorous readily starts burning from the heat generated by friction on rubbing.


When a material burns rapidly to produce heat and light on applying an external agent to it, such combustion is called rapid combustion.


● Rapid combustion is observed in gas stoves in kitchen where the gas burns rapidly on bringing a lighter or burning matchstick near to it.


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