JEE Main 2014 Chemistry question

Chemistry General Principles and Processes of Isolation of Elements (Metallurgy)JEE Main 2014

Not in JEE Main or NEET syllabus

Which series of reactions correctly represents the chemical relations related to iron and its compound?

(1)Fe \xrightarrow{dilute\ H_2SO_4} FeSO_4 \xrightarrow{H_2SO_4, O_2} Fe_2(SO_4)_3 \xrightarrow{heat} Fe
(2)Fe \xrightarrow{O_2, heat} FeO \xrightarrow{dilute\ H_2SO_4} FeSO_4 \xrightarrow{heat} Fe
(3)Fe \xrightarrow{Cl_2, heat} FeCl_3 \xrightarrow{heat, air} FeCl_2 \xrightarrow{Zn} Fe
(4)Fe \xrightarrow{O_2, heat} Fe_3O_4 \xrightarrow{CO, 600\ ^\circ C} FeO \xrightarrow{CO, 700\ ^\circ C} FeCorrect

Answer: (4)

Solution

Option (4) is the standard blast-furnace sequence: iron burns in air to magnetite, which carbon monoxide reduces stepwise to FeO at about 600 °C and then to metallic iron at

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Question ID VK-104303