Fill in the blanks with suitable words:
(a) A fuel must be heated to its……… before it starts burning.
(b) The most common supporter of combustion around us is……………..
(c) Fire produced by burning oil cannot be controlled by…………………….
(d) A liquid fuel used in homes is………
(e) The amount of heat evolved when 1kg of a fuel is burnt completely is called its…………………..
(f) The substance which vaporize during, give…………………..
(g) Burning of wood and coal causes……………. of air.

Fill in the blanks with suitable words:

(a) A fuel must be heated to its ignition temperature before it starts burning.

(b) The most common supporter of combustion around us is air.

(c) Fire produced by burning oil cannot be controlled by water.

(d) A liquid fuel used in homes is kerosene.

(e) The amount of heat evolved when 1kg of a fuel is burnt completely is called its calorific values.

(f) The substance which vaporize during, give flames.

(g) Burning of wood and coal causes pollution of air.

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Updated on: 10-Oct-2022

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