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13-06-2021 pH Meters

Q. Which of the following is the simplest of pH meters?

A. Null-detector type pH meter
B. Direct reading type pH meter
C. Digital pH meter
D. Modern pH meter

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Dapzoi Verified
Commented on 2021-06-13 11:47:22 (IST)
Answer: A

Explanation: Null-detector type pH meter is the simplest of all pH meters. It is also known as the potentiometer type.