Match the following Column-I and Column-II and choose the correct option: Column-I Column-II (a) Fe(s)+CuSO4(aq) → FeSO4(aq)+Cu(s) (i) Combination reaction (b) CaCO3(s) → CaO(s)+CO2(g) (ii) Decomposition reaction (c) 2H2(g) + O2(g) → 2H2O(l)  (iii) Displacement reaction (d) Na2SO4(aq)+BaCl2(aq) → BaSO4(s)+2NaCl(aq) (iV) Double displacement reaction

(a) - (i), (b)-(ii), (c)-(iii), (d)-(iv) (a) - (iii), (b)-(ii), (c)-(i), (d)-(iv) (a) - (iii), (b)-(i), (c)-(ii), (d)-(iv) (a) - (iv), (b)-(ii), (c)-(i), (d)-(iii)

(a) - (iii), (b)-(ii), (c)-(i), (d)-(iv)

The correct answer is option 2. (a) - (iii), (b)-(ii), (c)-(i), (d)-(iv) Column-I Column-II (a) Fe(s)+CuSO4(aq) → FeSO4(aq)+Cu(s) (iii) Displacement reaction (b) CaCO3(s) → CaO(s)+CO2(g) (ii) Decomposition reaction (c) 2H2(g) + O2(g) → 2H2O(l)  (i) Combination reaction (d) Na2SO4(aq)+BaCl2(aq) → BaSO4(s)+2NaCl(aq) (iV) Double displacement reaction