An aqaeous solution of `FeSO_(4).Al_(2)(SO_(4))_(2)` and chrome alum is heated with excess of `Na_(2)O_(3)` and chrome alum in heated with excess of `Na_(2)O_(2)` and fiterad .The matrials obtained areA. A colourless fitrate and a green residueB. A yellow fitrate and a green residueC. A yellow fitrate and a brown residueD. A green fitrate and a green brown

An aqaeous solution of `FeSO_(4).Al_(2)(SO_(4))_(2)` and chrome alum i

1.	An aqaeous solution of `FeSO_(4).Al_(2)(SO_(4))_(2)` and chrome alum is heated with excess of `Na_(2)O_(3)` and chrome alum in heated with excess of `Na_(2)O_(2)` and fiterad .The matrials obtained areA. A colourless fitrate and a green residueB. A yellow fitrate and a green residueC. A yellow fitrate and a brown residueD. A green fitrate and a green brown
Answer» Correct Answer - c In the presence of peroxide, chromium ions are oxidised to chromate ions which give a yellow fitrate ferrie ions form brown precipitate of `Fe(OH)_(3)`

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