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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
`Fe`
`Cu`
`Ni`
`Co`

A

Fe

B

Cu

C

Ni

D

Co

Text Solution

Verified by Experts

(B)`underset(M)(Cu)+underset(N)(2agNO_(3))toCu underset(Blue)((NO_(3))_(2))+2Ag`
While Cu partially oxidizes to `Cu(NO_(3))_(2)`, and remaining `AgNO_(3)` reacts with NacI
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