MCQ
A certain quantity of electricity is passed through aqueous $Al_2(SO_4)_3$ and $CuSO_4$ solutions connected in series. $0.09 g$ of $Al$ is deposited on cathode during electrolysis. The amount of copper deposited on cathode in grams is : $($Atomic mass of $Al = 27 u, Cu = 63.5 u)$
- A$31.8$
- ✓$0.318$
- C$3.18$
- D$0.636$
