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A standard solution of KNO(3) is used to...

A standard solution of `KNO_(3)` is used to make salt bridge, because

A

velocity of `K^(+)` is greater than that of `NO_(3)^(-)`

B

velocity of `NO_(3)^(-)` is greater than that of `K^(+)`

C

velocities of both `K^(+)` and `NO_(3)^(-)` are nearly the same

D

`KNO_(3)` is highly soluble in water.

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The correct Answer is:
c
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