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The correct option(s) related to the ext...

The correct option(s) related to the extraction of iron from its ore in the blast furnace operating in the temperature range 900 – 1500 K is(are)

A

Limestone is used to remove silicate impurity

B

Pig iron obtained from blast furnace contains about 4% carbon

C

Coke (C) converts `CO_(2)` to CO

D

Exhaust gases consist of `NO_(2)` and CO.

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