Write the factor upon which the catalytic reaction of shape -selective cata -lyst depends ?

Explanation

### Step-by-Step Solution:

1. **Understanding Shape-Selective Catalysts**:
- Shape-selective catalysts are catalysts that facilitate reactions based on the size and shape of the reactant and product molecules. They allow certain molecules to enter their pores while excluding others, thus influencing the reaction pathway.

2. **Identifying the Factors**:
- There are two primary factors that determine the catalytic reaction of shape-selective catalysts:
- **Pore Structure of the Catalyst**:
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