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Question

Which instrument is used for the completion of the circuit of an electrochemical cell?

A
Conductivity tester
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B
Salt bridge
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C
Thermometer
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D
Buret
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E
Graduated cylinder
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Solution

The correct option is B Salt bridge
Salt bridge is used for the completion of the circuit of an electrochemical cell.
Salt bridge provides electrical contact between two solutions and thereby completes the electrical circuit.
It prevents mixing of electrode solutions.
It maintains the electrical neutrality in both solutions by a flow of ions.

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