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Four colourless salt solutions are place...

Four colourless salt solutions are placed in separate test tubes and a strip of copper is placed in each. Which solution finally turns blue:

A

`Pb(NO_3)_2`

B

`Zn(NO_3)_2`

C

`AgNO_3`

D

`Cd(NO_3)_2`

Text Solution

Verified by Experts

The correct Answer is:
C
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