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The response of coulometric method is instantaneous.

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The response of coulometric method is instantaneous.

(a) True

(b) False

I have been asked this question in an online interview.

My question is taken from Sulphur Di-oxide Monitoring topic in section Pollution Monitoring Instruments of Analytical Instrumentation

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Correct choice is (b) False

The best explanation: The response of coulometric method is not instantaneous. It may take about 4 minutes for 90 percent of the signal to appear for any concentration of SO2.

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