Combustion and Flame - Chapter Wise CBSE Solved Question and Answer Based On NCERT
Points To Remember:
Fuels are of various types, and different types of fuels are used for different purposes like in industry, for running automobiles, for domestic uses etc.
The chemical process in which a substance reacts with oxygen to give off heat is called combustion
The substance which undergoes combustion is called combustible or fuel
Fuel may be solid, liquid or gas
The lowest temperature at which a substance catches fire is called its ignition temperature
Certain substances have very low ignition temperature and can easily catch fire with a flame are called inflammable substances like petrol, LPG etc.
The three essential requirements for producing fire are fuel, air and heat, fire can be controlled by removing one or more of these requirements
There are three types of combustion namely, rapid combustion, spontaneous combustion and explosion
An ideal fuel is cheap, readily combustible, readily available, having high calorific value and easy to transport
Incomplete combustion of fuel releases carbon mono oxide gas which is poisonous and harmful for living beings
