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JEE Advanced 2022 Paper 2

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Question : 48

Total: 54

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

Limestone is used to remove silicate impurity.
Pig iron obtained from blast furnace contains about 4% carbon.
Coke (C) converts CO2 to CO.
Exhaust gases consist of NO2 and CO.

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