M

Mr. Dubey • 52.30K Points
Coach 

Q. Which of the following chemical compound, is the most common flux added to the charge in a cupola furnace?

(A) coke
(B) methane
(C) carbon dioxide
(D) limestone
Correct : Option (D)

Explanation: 
 limestone (caco3) is used as flux in cupola furnace in a proportion of about 2-4% of the metal charge.

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