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 2 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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