Instructions

When a metal rod M is dipped into an aqueous colourless concentrated solution of compound N, the solution turns light blue. Addition of aqueous NaCl to the blue solution gives a white precipitate O. Addition of aq. $$NH_3$$ dissolves O and gives an intense blue solution.

Question 12

The metal rod M is -

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JEE (Advanced) 2011 Paper-1

The metal rod M is -

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