Class 12 Chemistry Metallurgy General Principles and Processes of Isolation of Elements
_______ produced by coke combustion reduces iron oxide (hematite) in the production of the iron product.
(a)
(b)
(c)
CO
(d)
Correct answer: (c) 
Solution: Coke is used as a fuel and as reducing agent in smelting iron ore in a blast furnace. The CO produced by its combustion reduces iron oxide (hematite) in the production of iron product. Coke can be combusted producing little or no smoke while bituminous coal will produce much more smoke.

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general principles and processes of isolation of elements
metallurgical operations
metallurg
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general principles and processes of isolation of elements
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metallurg