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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 dipped in each. Which solution finally turns blue ?

A

`Zn(NO_(3))_(2)`

B

`Cd(NO_(3))_(2)`

C

`NaNO_(3)`

D

`AgNO_(3)`

Text Solution

Verified by Experts

The correct Answer is:
D
`E_("red")^(0) Cu gt E_("red")^(0)Ag`
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