12c Oxidation and Reduction III

The diagram shows the apparatus set-up of an experiment to study a redox reaction. At the end of the reaction, the orange colour of potassium dichromate (VI) solution turn green and potassium iodide turn orange. Which of the following statement explains the changes of colour in the experiment?

In a chemical cell, the oxidation reaction occurs at the

Diagram to the right shows a simple cell. Which of the substances below undergoes reduction reaction in the cell?

In a voltaic cell, the anode will be the

The figure above shows a set-up of apparatus of a redox reaction. Which of the following statement are not correct?

In the chemical cell above, terminal Q is the