PYQ JEE- Principle Related To Practical Chemistry- P2

Question:

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 FeCl3, it gave deep red colour which disppeared on boiling and a brown red ppt was formed. The mixture contains : (JEE Main 2023)

A) SO32−C2O42−

B) CH3COO−NO3−

C) C2O42−NO3−

D) SO32−CH3COO−

Answer:

C2O42−NO3−

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