Q26Multiple choice
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 1kg of a fuel is called its __________.
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(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 1kg of a fuel is called its __________.