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Ronan Asked :

21-11-2021 Spirometry

Q. Internal Reference electrode is of _______

A. Gold
B. Silver
C. Platinum
D. Graphite


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Dapzoi Verified
Commented on 2021-11-21 12:21:52 (IST)
Answer: B

Explanation: The internal reference electrode is silver/silver chloride and the calomel reference electrode is connected to a small pool of saturated KCI, through a porous pin. Accuracy of 0.001 pH can be obtained with this electrode against a constant buffer.