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Reported Question / Answer
Q.) In practical operation of any furnace, zero oxygen percentage or theoretical CO2 percentage in flue gas is rarely achieved, because of
1)
use of pulverised solid fuels
2)
use of non-preheated combustion air.
3)
use of excessive positive draft in the furnace.
4)
imperfect mixing of fuel & air and infiltration of air.
5)
NULL
Answer :
4
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