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(I)FeCr_2 O_4 + NaOH + air to (A) + Fe_2O_3 (II) (A) + (B) to NaCr_2O_7 (III)Na_2Cr_2O_7 + X overset(Delta)(to) Cr_2O_3 (IV)Cr_2O_3 + Y overset(Delta ) (to)Cr High temperature (gt1000^@C)electrolytic reduction is necessary for isolating : |
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Answer» Al |
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