The fuel which usually burns with a blue flame is:

(a) coal
(b) LPG
(c) candle wax
(d) kerosene (in lamp)

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Solution

(b) LPG
LPG is the fuel which usually burns with a blue flame, as the burner of a stove has many holes to allow enough oxygen for complete combustion.

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The fuel which usually burns with a blue flame is: (a) coal (b) LPG (c) candle wax (d) kerosene (in lamp)

(b) LPG LPG is the fuel which usually burns with a blue flame, as the burner of a stove has many holes to allow enough oxygen for complete combustion.

The fuel which usually burns with a blue flame is:

(a) coal
(b) LPG
(c) candle wax
(d) kerosene (in lamp)

(b) LPG
LPG is the fuel which usually burns with a blue flame, as the burner of a stove has many holes to allow enough oxygen for complete combustion.