Write the balanced chemical equations for the following reactions:
(a) Calcium hydroxide `+` Carbon dioxide `to` Calcium carbonate `+` Water
(b) Zinc `+` Silver nitrate `to` Zinc nitrate `+` Silver
(c) Aluminium `+` Copper chloride `to` Aluminium chloride `+` Copper
(d) Barium chloride `+` Potasium sulphate `to` 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`.