Answer:
(i)
(a) Blue; white
(b) The liquid droplets are actually the water
droplets. The source of water droplets is the water of crystallization of
hydrated copper sulphate crystals (CuSO4.5H2O).
(ii) When
metal 'X' is dipped in aqueous solution of aluminium sulphate no reaction is
observed, it means it is less reactive than aluminium. But when it is dipped in
ferrous sulphate solution, the solution turns from pale green to colourless, so
'X' is more reactive than iron and thus displaces it from its solution.
Therefore, 'X' must be zinc. It reacts with ferrous
sulphate to form colourless zinc sulphate solution by displacing iron.
Zn(s)
+ FeSO4(aq) ZnSO4(aq)
+ Fe(s)
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