Question

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

The question was asked in an interview for internship.

I'd like to ask this question from pH Meters topic in chapter pH Meters and Ion Analysers of Analytical Instrumentation

Answer 1

Right choice is (a) Null-detector type pH meter

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