In practical operation of any furnace, zero oxygen percentage or theor – McqOptions

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1.	In practical operation of any furnace, zero oxygen percentage or theoretical CO‚Äö√á√á percentage in flue gas is rarely achieved, because of#
A.	Use of non-preheated combustion air
B.	Use of pulverised solid fuels
C.	Imperfect mixing of fuel & air and infiltration of air
D.	Use of excessive positive draft in the furnace
Answer» D. Use of excessive positive draft in the furnace

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