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When a solution of mixture having two inorganic salts was treated with freshly prepared ferrous sulphate in acidic mediu…

Q1

When a solution of mixture having two inorganic salts was treated with freshly prepared ferrous sulphate in acidic medium, a dark brown ring was formed whereas on treatment with neutral \({\mathrm{FeCl}}_{3}\) , it gave deep red colour which disappeared on boiling and a brown red ppt was formed. The mixture contains

[JEE Main 2023, 11 Apr (Shift 1)]

a

\(C{H}_{3}CO{O}^{-}&N{O}_{3}^{-}\)

b

\({C}_{2}{O}_{4}^{2-}&N{O}_{3}^{-}\)

c

\(S{O}_{3}^{2-}&C{H}_{3}CO{O}^{-}\)

d

\(S{O}_{3}^{2-}&{C}_{2}{O}_{4}^{2-}\)

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