Presence of sulphur in the fuel fired in a furnace

1.	Presence of sulphur in the fuel fired in a furnace
A.	contributes to its heating value.
B.	helps in electrostatic precipitation of ash from flue gases.
C.	corrodes ducts & air preheater, if the flue gas temperature is low.
D.	all 'a' , 'b' & 'c'.
Answer» E.

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Presence of sulphur in the fuel fired in a furnace

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