Q79 / 200 · NEET 2023 (All India) · Chemistry

Which one is an example of heterogenous catalysis?

  • Correct answer
    A
    Combination between dinitrogen and dihydrogen to form ammonia in the presence of finely divided iron.
  • B
    Oxidation of sulphur dioxide into sulphur trioxide in the presence of oxides of nitrogen.
  • C
    Hydrolysis of sugar catalysed by H+ ions.
  • D
    Decomposition of ozone in presence of nitrogen monoxide.

Solution

Heterogeneous catalysis is catalysis where the phase of catalysts differs from that of the reactants or products. Combination between dinitrogen and dihydrogen to form ammonia in the presence of finely divided iron is a heterogenous catalysis because iron is solid catalyst and reactants and products are gases.

Hence, the correct answer is option: 'A'.

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