Which of the following cannot be used as secondary reference electrode?
A. Calomel electrode
B. Silver-silver chloride electrode
C. Mercury-mercury sulphate electrode
D. Glass electrode
Answer:D
Which of the following cannot be used as secondary reference electrode?
A. Calomel electrode B. Silver-silver chloride electrode C. Mercury-mercury sulphate electrode D. Glass electrode
Explanation: Glass electrode cannot be used as secondary reference electrode. It is an indicator electrode. It responds to the changes in the activity of the analyte ion.