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

F e C l_{2}, h e a t - ---- \to F e C l_{3} h e a t, a i r - ---- \to F e C l_{2} Z n - \to F e

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F e O_{2}, h e a t - --- \to F e_{3} O_{4} C O, 600^{\circ} C - ----- \to F e O C O, 700^{\circ} C - ----- \to F e

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F e d i l H_{2} S O_{4} - ----- \to F e S O_{4} H_{2} S O_{4}, O_{2} - ----- \to F e_{2} (S O_{4})_{3} H e a t - -- \to F e

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F e O_{2}, h e a t - --- \to F e O d i l, H_{2} S O_{4} - ----- \to F e S O_{4} H e a t - -- \to F e

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Solution

The correct option is B $F e O_{2}, h e a t - --- \to F e_{3} O_{4} C O, 600^{\circ} C - ----- \to F e O C O, 700^{\circ} C - ----- \to F e$
(b) Answer is (2) because all steps are correct as (extraction of iron - blast furnace!).
(a) is wrong because
$F e C l_{3} + \frac{1}{2} O_{2} Δ - \to F e O C l + C l_{2} ↑$
(c) is wrong because $F e_{2} (S O_{4})_{3} Δ - \to F e_{2} O_{3 (s)} + 3 S O_{3} ↑$
(d) is wrong because $2 F e S O_{4} Δ - \to F e_{2} O_{3 (s)} + S O_{2} ↑ + S O_{3} ↑$

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