Question

Which of the following processes does not occur at the interface of phases?

• A. Crystallisation
• B. Heterogeneous catalysis
• C. Homogeneous catalysis
• D. Corrosion

Answer 1

The correct option is C Homogeneous catalysis

• When the reactants, products and the catalyst are in the same phase (i.e., liquid or gas), the process is said to be homogeneous catalysis.
  
• In Heterogeneous catalysis, the reactants, products, and catalyst are in different phase. It is a process occurring at the interface.
• Corrosion and crystallization are the processes which occur at the interface of phases.
• Hence, option C is the right answer.