Assertion: CuSO4 can be stored in Zn vessel.
Reason: Zn is more reactive than Cu.
Answer & explanation
Correct answer: option 4
Copper sulphate cannot be stored in a Zinc vessel because Zinc is more electropositive than copper. Zinc displaces copper from copper sulphate solution and itself gets oxidised to form Zn2+. Thus, Zinc vessel will get corroded and may develop holes.