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.
Describe how green house effect may cause atmospheric heating ? Name any two atmospheric constituents responsible for it.
Explain various harmful effects of burning fuels.
Explain why, fire caused by electricity should not be extinguished by pouring water.
Draw a diagram to explain that air is essential for combustion.
