The blue zone in a LPG flame indicates -unburnt vapourspartial decompositionmoderately hothottest and complete combustion

Question

Toppr Admin · Accepted Answer

Flame color determines the rate of combustion and thus the temperature difference producing a different color flame- In LPG the blue zone is the zone of complete combustion of fuel- So- the amount of soot decreases- and the temperature is highest as high heat is released-

Column A	Column B	Column C
(a) Hottest part	(i) Innermost zone of unburnt wax vapors	(x) blue
(b) Moderately hot	(ii) Middle zone of partial combustion	(y) black
(c) Least hot	(iii) Outer zone of complete combustion	(z) yellow

'A'	'B'
a. Dark inner zone	1. Hottest part (No carbon)
b. Blue zone	2. Partial combustion
c. Luminous zone	3. Unburnt vapours of wax
d. Non-luminous zone	4. Complete combustion

	Column I		Column II
(a)	Hottest zone of a candle flame	(i)	Zone of unburnt wax vapours
(b)	Yellow zone of a candle flame	(ii)	Non-luminous zone
(c)	Black innermost zone of the candle flame	(iii)	Incomplete combustion zone

The blue zone in a LPG flame indicates _________.
unburnt vapours
partial decomposition
moderately hot
hottest and complete combustion

Flame color determines the rate of combustion and thus the temperature difference producing a different color flame. In LPG the blue zone is the zone of complete combustion of fuel. So, the amount of soot decreases, and the temperature is highest as high heat is released.

The blue zone in a LPG flame indicates _________.unburnt vapourspartial decompositionmoderately hothottest and complete combustion

Flame color determines the rate of combustion and thus the temperature difference producing a different color flame. In LPG the blue zone is the zone of complete combustion of fuel. So, the amount of soot decreases, and the temperature is highest as high heat is released.

The blue zone in a LPG flame indicates _________.
unburnt vapours
partial decomposition
moderately hot
hottest and complete combustion