In order to maintain a reducing atmosphere in a furnace, it should hav – McqOptions

MCQOPTIONS

1.	In order to maintain a reducing atmosphere in a furnace, it should have%!
A.	No O‚Äö√á√á in flue gas
B.	CO in flue gas
C.	High excess air
D.	None of these
Answer» C. High excess air

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