Q. 13

Select (i) combination reaction (ii) decomposition reaction and (iii) displacement reaction from the following chemical equations: (2014)

(i) ZnCO3 (s) ZnO (s) + CO2 (g)

(ii) Pb (s) + CuCl2 (aq) PbCl2 (aq) + Cu (s)

(iii) NaBr (aq) + AgNO3 (aq) AgBr (s) + NaNO3 (aq)

(iv) H2 (g) + Cl2 (g) 2 HCl (g)

(v) Fe2O3 + 2Al Al2O3 + 2Fe

(vi) 3H2 (g) + N2 (g) 2NH3 (g)

(vii) CaCO3 (s) CaO (s) + CO2 (g)

Answer :

(i) Decomposition reaction

(ii) Displacement reaction


(iii) Double displacement reaction


(iv) Combination reaction


(v) Displacement reaction


(vi) Combination reaction


(vii) Decomposition reaction


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