CGPET 2017 Solved Paper

Given,
Molarity of CuSO4 solution (c)=1M, i.e. 1mol∕L
∵1mol of Cu2+ ions require 2F of charge for complete deposition by electrolysis.
∴ On passing 2F charge, all Cu2+ ions deposited and no Cu2+ left in CuSO4 solution. So, the molarity of CuSO4 solution will be zero.