1.

FeCr_(2)O_(4)+NaOH+"air" to (A)+Fe_(2)O_(3) (A)+(B) to Na_(2)Cr_(2)O_(7) Na_(2)Cr_(2)O_(7)+X overset(Delta)to Cr_(2)O_(3) Cr_(2)O_(3)+Y overset(Delta)to Cr Na_(2)CrO_(4) and Fe_(2)O_(3) are separated by :

Answer»

dissolving in CONC. `H_(2)SO_(4)`
dissolving in `NH_(3)`
dissolving in `H_(2)O`
dissolving in DIL. HCl

Answer :C


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