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Fill in the blanks using the words given in the box. ignition, petrol, combustion, calorific value, combustible, inflammable
(a) A chemical process in which a substance reacts with oxygen to give off heat is called ………………
(b) Wood, paper, CNG are ……………substances.
(c) The lowest temperature at which a substance catches fire is called its …………… temperature.
(d) Ignition temperature of……………… is lower than that of wood.
(e) The substances which have very low……………… temperature and can easily catch fire with a flame are called…………….. substances.
(f) The amount of heat energy produced on complete combustion of 1 kg of a fuel is called its …………….
(a) A chemical process in which a substance reacts with oxygen to give off heat is called combustion.
(b) Wood, paper, CNG are combustible substances.
(c) The lowest temperature at which a substance catches fire is called its Ignition temperature.
(d) Ignition temperature of petrol is lower than that of wood.
(e) The substances which have very low Ignition temperature and can easily catch fire with a flame are called Inflammable substances.
(f) The amount of heat energy produced on complete combustion of 1kg of a fuel is called its Calorific value.
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