Fundamentholfundamenthol
NEET2023Chemistry
Q.

Which one is an example of heterogenous catalysis?

  1. A

    Hydrolysis of sugar catalysed by H ions.

  2. B

    Decomposition of ozone in presence of nitrogen monoxide.

  3. C

    Combination between dinitrogen and dihydrogen to form ammonia in the presence of finely divided iron.

  4. D

    Oxidation of sulphur dioxide into sulphur trioxide in the presence of oxides of nitrogen.

Solution

Heterogeneous catalysis requires the catalyst to be in a different phase from the reactants. In Haber's process the gaseous and react over solid finely divided iron, so phases differ.

The other three reactions are homogeneous: H, NO, and oxides of nitrogen all stay in the same phase as the reactants.

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