Multiple choice

Polarography is an electrochemical method of quantitative or qualitative analysis based on the relationship between an increasing current passing.The electrode used in polarography is

  1. dropping mercury electrode

  2. dynamic hydrogen electrode (DHE)

  3. fluoride selective electrode

  4. ion-selective electrode
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A Correct answer
Explanation

The dropping mercury electrode (DME) is a working electrode made of mercury and used in polarography. Experiments run with mercury electrodes are referred to as forms of polarography even if the experiments are identical or very similar to a corresponding voltammetry experiment which use solid working electrodes.

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