. 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 __________.

 

Best Answer

Ans. (a) combustion,

(b) combustible,

(c) ignition,

(d) petrol,

(e) ignition, inflammable,

(f) calorific value

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