Which series of reactions correctly represents chemical reactions 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 $F e O_{2}, h e a t - --- \to F e_{3} O_{4} C O, 600^{\circ} C - ----- \to F e O C O, 700^{\circ} C - ----- \to F e$
In equation 1, $F e C l_{3}$ cannot be reduced when heated in air.
In equation 3, $F e_{2} (S O_{4})_{3}$ cannot convert to $F e$ on heating; instead oxide(s) will be formed.
In equation 4, $F e S O_{4}$ cannot be converted to $F e$ on heating; instead oxide(s) will be formed.

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