Assertion : Zeolites are good shape-selective catalyst.
Reason : Zeolotes have honeycomb like structures.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion.
B. If both assertion and reason are true but reason is not the correct explanation of assertion
C. If assertion is true but reason is false
D. if both assertion and reason are false

Answer

To solve the question, we need to analyze both the assertion and the reason provided:

**Assertion:** Zeolites are good shape-selective catalysts.
**Reason:** Zeolites have honeycomb-like structures.

### Step-by-Step Solution:

1. **Understanding Zeolites:**
- Zeolites are microporous aluminosilicates. This means they have a porous structure at the microscopic level, which allows them to selectively absorb certain molecules based on size.

2. **Structure of Zeolites:**
- The structure of zeolites is often described as honeycomb-like or cage-like. This is due to the arrangement of silicon, aluminum, and oxygen atoms that form a network of pores.

3. **Shape-Selective Catalysis:**
- Shape-selective catalysis refers to the ability of a catalyst to preferentially catalyze reactions for certain shapes or sizes of reactants. This is crucial in reactions where the size of the reactants and products matters.

4. **Pore Size and Reactant Fit:**
- The effectiveness of zeolites as catalysts is largely due to their pore size. If the reactant fits into the pore of the zeolite, it can undergo a reaction. If the reactant is too large, it cannot enter the pore and thus cannot react.

5. **Relation Between Assertion and Reason:**
- The assertion states that zeolites are good shape-selective catalysts, which is true because their pore structure allows them to selectively catalyze reactions based on the size and shape of the reactants.
- The reason provided states that zeolites have honeycomb-like structures, which is also true. This structure is what allows them to be shape-selective.

6. **Conclusion:**
- Both the assertion and the reason are true, and the reason correctly explains why zeolites are good shape-selective catalysts. Therefore, the correct answer is that both the assertion and reason are true, and the reason is a correct explanation of the assertion.

### Final Answer:
Both the assertion and the reason are true, and the reason is a correct explanation for the assertion.

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