Which one of the following solutions wil...

Which one of the following solutions will turn red litmus blue?

A

`AgNO_(3)`

B

`NaCl`

C

`ZnSO_(4)`

D

`KNO_(3)`

Verified by Experts

The correct Answer is:

A

`2AgNO_(3)+CurarrCu(NO_(3))_(2)+2Ag`
Due to the presence of `Cu^(2+)(aq)` ions in solution it will turn blue.

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