Write the balanced chemical equations for the following reactions:
(i) Calcium hydroxide + Carbon dioxide `rarr` Calcium carbonate + Water
(ii) Zinc + Silver nitrate `rarr` Zinc nitrate + Silver
(iii) Aluminium + Copper chloride `rarr` Aluminium chloride + Copper
(iv) Barium chloride + Potassium sulphate `rarr` Barium sulphate + Potassium chloride

Options

A. Calcium hydroxide + Carbon dioxide `rarr` Calcium carbonate + Water
B. Zinc + Silver nitrate `rarr` Zinc nitrate + Silver
C. Aluminium + Copper chloride `rarr` Aluminium chloride + Copper
D. Barium chloride + Potassium sulphate `rarr` Barium sulphate + Potassium chloride

Explanation

(a) `Ca(OH)_(2)+CO_(2) rarr CaCO_(3)+H_(2)O`
(b) `Zn +2AgNO_(3) rarr Zn(NO_(3))_(2)+2Ag`
(c) `2Al + 3CuCl_(2) rarr 2AlCl_(3) + 3Cu`
(d) `BaCl_(2)+K_(2)SO_(4) rarr BaSO_(4) + 2KCl`.