NEET Chemistry Past PapershardMCQ SINGLE

Which one is an example of heterogenous catalysis ? (A) Hydrolysis of sugar catalysed by H+ ions. (BNEET Chemistry Past Papers Chemistry Question

Question

Which one is an example of heterogenous catalysis ? (A) Hydrolysis of sugar catalysed by H+ ions. (B) Decomposition of ozone is presence of nitrogen monoxide. (C) Combination between dinitrogen and dihydrogen to form ammonia in the presence of finely divided iron. (D) Oxidation of sulphur dioxide into sulphur trioxide in the presence of oxides of nitrogen.

Answer: C

💡 Solution & Explanation

(1) C12H22O11(aq)+H2O C6H12O6(aq) + C6H12O6(aq) (Homogeneous reaction) (2) 2O3(g) ⎯⎯⎯⎯→ N O (g) 3O2(g) (Homogeneous reaction) (3) N2(g) + 3H2(g) ⎯⎯⎯⎯ → Fe(s) 2NH3(g) (Reactants and catalyst are in different phase) It is heterogeneous reaction (4) SO2(g) + 1 2 O2(g) ⎯⎯⎯⎯→ (g) NO SO3(g)

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