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In a salt bridge KCl is used because...

In a salt bridge KCl is used because

A

KCl is present in the calomel electrode

B

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

C

`K^(+) "and" Cl^(-)` are isoelectrons

D

KCl is an electrolyte

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The correct Answer is:
B
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