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When a metal rod M is dipped into an aqu...

When a metal rod M is dipped into an aqueous colourless concetrated 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 `NH_3` dissolves O and gives an intense blue solution.
Q. The metal rod M is

A

`Fe`

B

`Cu`

C

`Ni`

D

`Co`

Text Solution

Verified by Experts

The correct Answer is:
B

`Intense blue solution `overset(NH_(3))larr` white ppt. of componend (O).
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