Question

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.

Answer 1

Answer:

a. ignition temperature

b. oxygen

C. water

d. LPG

e. calorific value of the fuel

f. flame

g. pollution

Actually question( f)can be wrong as the question according to me is incomplete.

So for that I am sorry to you.

Hope other answers are correct.

Answer 2

(a) ignition temperature

(b) oxygen

(c) water

(d) LPG

(e) calorific value

(f) burning, flame

(g) pollution

Explanation:

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

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

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

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

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

(f)The substance which vaporize during burning, gives flame.  

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