Question

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 aqueous $N{H}_3$ dissolves $O$ and gives an intense blue solution.

• A. b
• B. a
• C. d
• D. c

Answer 1

The correct option is A b

Solution is missing