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Ingress of cold air in the furnaces through cracks, charging doors, openings etc. | |
A. | reduces the flue gas temperature and makes the furnace atmosphere oxidising. [Wrong Answer] |
B. | increases the load on the induced draft fan. [Wrong Answer] |
C. | reduces the furnace draught. [Wrong Answer] |
D. | all (a), (b) and (c) [Correct Answer] |