_Incomplete combustion can be best judged by$? – McqOptions

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1.	_Incomplete combustion can be best judged by$?
A.	Smoky chimney exit
B.	Excess air in flue gases
C.	Measuring carbon monoxide in flue gases
D.	Measuring temperature of flue gases at exit of furnace
Answer» D. Measuring temperature of flue gases at exit of furnace

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