Virtual Labs

Q1. The electrode potential measures the _____________

a: The tendency of the electrode to gain or lose electrons. Explanation

Explanation

b: Possibility of a cell reaction to occur. Explanation

Explanation

c: Current. Explanation

Explanation

d: The difference in the ionization of electrode and metal ion. Explanation

Explanation

Q2. Which of the following is not a part of the three-electrode system?

a: Auxiliary electrode. Explanation

Explanation

b: Working electrode. Explanation

Explanation

c: Reference electrode. Explanation

Explanation

d: Conducting electrode. Explanation

Explanation

Q3. In anodic stripping voltammetry, the deposition step is:

a: Reduction Explanation

Explanation

b: Oxidation. Explanation

Explanation

c: Unnecessary. Explanation

Explanation

d: Reduction and oxidation. Explanation

Explanation

Q4. What are the common parameters involved in voltammetry?

a: Current and electrodes. Explanation

Explanation

b: Potential and current. Explanation

Explanation

c: Current and resistance. Explanation

Explanation

d: Potential and resistance. Explanation

Explanation

Q5. For which of the following technique, the potential waveform is a series of potential pulses of increasing amplitude, with potential returning to the baseline each time?

a: Differential pulse voltammetry. Explanation

Explanation

b: Stripping voltammetry. Explanation

Explanation

c: Normal pulse voltammetry. Explanation

Explanation

d: Differential pulse anodic stripping voltammetry. Explanation

Explanation

Q6. Which of the following curve is obtained during the voltammetric analysis of an electroactive analyte?

a: Charge time curve. Explanation

Explanation

b: Current-potential curve. Explanation

Explanation

c: Current-time curve. Explanation

Explanation

d: Charge temperature curve. Explanation

Explanation

Q7. Which of the following is an advantage of the dropping mercury electrode?

a: A fresh reaction surface is provided with each drop of mercury so that material does not accumulate at the electrode. Explanation

Explanation

b: It is a less expensive electrode. Explanation

Explanation

c: It is comparatively easier to obtain. Explanation

Explanation

d: It can drive a reaction at a low temperature. Explanation

Explanation

Q8. In ASV, the metal ions in a sample are concentrated onto the electrode surface by application of a ___________

a: Negative potential. Explanation

Explanation

b: Positive potential. Explanation

Explanation

c: Negative current. Explanation

Explanation

d: Positive current. Explanation

Explanation

Anodic Stripping Voltammetry