Photoelectrochemical Dye Degradation

1. Which of the following is not a personal protective equipment (PPE) in a typical chemical engineering laboratory?

• Hat

• Lab coat

• Goggles

• Gloves

2. It is necessary to know where the emergency exits of the laboratory are located.

• True

• False

3. Textile dye wastes are often dumped into water bodies, causing harm to the aquatic environment and organisms.

• True

• False

4. Which of the following is/are major issues with the existing processes for the degradation of dye pollutants?

• Too expensive and energy-intensive

• Too cheap and easy

• Too clean

• Too expensive and clean

5. What is the major difference between an electrochemical cell and photoelectrochemical cell?

• The generation of current

• The use of anode and cathode

• The presence of solar irradiation

• The occurrence of chemical reactions

6. Which material is being used as the photoanode in the experiment?

• Graphite

• Copper (Cu)

• Silicon (Si)

• Bismuth Vanadate (BiVO4)

7. What is the initial concentration of reactive black in the experiment?

• 1 mg/L

• 5 mg/L

• 10 mg/L

• 20 mg/L

8. Why is light important in the experiment?

• To change the color of the dye

• To increase the temperature of the solution

• To activate the photoanode

• To measure the conductivity of the solution

9. How many electrodes are used in the photoelectrochemical setup for dye degradation during the workshop?

• One

• Two

• Three

• Four

10. Which instrument is used to measure the concentration of the dye in the solution?

• Microscope

• UV-Vis Spectrophotometer

• Thermometer

• pH meter