Question

how can we separate hydrated Cuso4 from its aqueous solution

Answer 1

By using a concentrated solution of sulphuric acid which acts as a dehydrating agent. The conc. solution of sulphuric acid removes the water of crystallisation of hydrated copper sulphate making it anhydrous copper sulphate.!!
Hope it helps you!

Answer 2

We can separate it by simply heating the Hyrated Copper Sulphate Crystals.
In this process, the copper sulphate crystals would break down to give copper sulphate and 5 molecules of water.
The reaction is :-
CuSO4.5H20 on heating gives CuSO4 + 5H20
The water molecules separated will stick to the inner surface of the test tube as vapours.