A strip of metal X is dipped in the blue coloured salt solution `YSO_(4)` . After some time, a layer of metal Y from the salt solution is formed on the surface of metal strip X. Metal X is used in galvanisation whereas metal Y is used in making electric wires. Metal X and metal Y togehter form an alloy Z.
(a) What could metal X be.
(b) What could metal Y be ?
(c) Name the metal salt `YSO_(4)`.
(d) What type of chemical reaction takes place when metal X reacts with salt solution `YSO_(4)` ? Write the equation of the chemical reaction involved.
(e) Name the alloy Z.

Explanation

(a) Since the metal X is used for galvanisation, it is most probably Zn.
(b) Since the metal Y is used in electric cable, it is likely to be cu.
(c) The salt is `CuSO_(4).`
(d) It is an example of metal displacement reaction. Zn lies above Cu in the activity series and has therefore, displaced Cu from the blue `CuSO_(4)` solution
`{:(Zn(s) + CuSO_(4)(aq) to, ZnSO_(4) (aq) + Cu(s)),((X) " "(YSO_(4)), " "(Y)):}`