Choose the correct option from the bracket and explain the statement giving reason.
(Oxidation, displacement, electrolysis, reduction, zinc, copper, double displacement, decomposition)

To prevent rusting, a layer of _____ metal is applied on iron sheets. 44

zinc

The conversion of ferrous sulphate to ferric sulphate is _____ reaction. 42

oxidation

When electric current is passed through acidulated water, _____ of water takes place. 37

decomposition

Addition of an aqueous solution of ZnSO4 to an aqueous solution of BaCl2 is an example of _____ reaction. 42

double displacement

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