Which of the following is an example of homogeneous catalysis?

Options

A. Manufacture of sulphuric acid by Contact process
B. Manufacture of ammonia by Haber’s process
C. Hydrolysis of sucrose in presence of dilute hydrochloric acid
D. Hydrogenation of oil

Explanation

To determine which of the following is an example of homogeneous catalysis, we need to understand the definition of homogeneous catalysis. Homogeneous catalysis occurs when the reactants and the catalyst are in the same phase (i.e., both are gases, liquids, or solids).

Let's analyze the options provided:

1. **Manufacture of sulfuric acid by the contact process**:
- The main reaction involves the conversion of sulfur dioxide (SO2) gas and oxygen (O2) gas into sulfur trioxide (SO3) gas, using B2O5 as a catalyst. Here, SO2 and O2 are gases, but B2O5 is a solid. Since the catalyst is in a different phase from the reactants, this is **not** an example of homogeneous catalysis.

2. **Manufacture of ammonia by Haber’s process**:
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