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In salt bridge, generally KCl is used be...

In salt bridge, generally KCl is used because

A

`K^(+)` and `Cl^(-)` ions are isoelectronic

B

`K^(+)` and `Cl^(-)` ions have the same transport number

C

KCl is present in the calomel electrode

D

KCl is a strong electrolyte.

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The correct Answer is:
B
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