Chemical Engineering - Fuels and Combustion - Discussion

3. 

During combustion of gaseous fuels, deficiency of air

[A]. lengthens the flame.
[B]. tends to shorten the flame.
[C]. does not affect the flame length.
[D]. increases the flame temperature.

Answer: Option A

Explanation:

No answer description available for this question.

Deepak said: (Jul 24, 2014)  
What is the reason for that?

Divya said: (Aug 17, 2015)  
In air oxygen is present. So, without oxygen how it will lengthens?

Imelda said: (Jan 17, 2017)  
Absent of O2 it lengthens the flame.

Kanchan said: (Nov 3, 2020)  
During combustion of gaseous fuels, deficiency of air lengthens the flame. When combustion is carried out in limited supply of air, the combustion is incomplete. The products of combustion remain unburnt and contaminate the smoke with particulate matter. Hence, the length of the flame increases.

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