Q.

Electrolysis of aqueous CuSO4(0.1M) was carried out is two cells I and II. In I, the electrodes are of Cu and is II they were of Pt. As the electrolysis proceeds pH of the electrolyte solution will

1 decrease is II and remain the same in I  
2 remain the same in both I and II  
3 increase in both I and II  
4 increase in I and decrease is II  

Ans.

(1)