Question

During the electrolysis of cupric chromate solution, the colours observed near the electrodes are:

• A. Red
• B. Blue
• C. Yellow
• D. Orange

Answer 1

Answer: (B), (C)

The correct options are
B Blue
C Yellow

The migration of ions take place during the electrolysis of cupric chromate solution. The positively charged copper ions, which are blue in colour, move towards the cathode while the negatively charged chromate ions, which are yellow in colour, move towards the anode. Hence, blue colour is found near the cathode and yellow colour is found near the anode.