Mention one shape selective catalyst used to convert alcohol directly into gasoline .

Explanation

**Step-by-Step Solution:**

1. **Identify the Type of Catalyst**: The question asks for a shape-selective catalyst. Shape-selective catalysts are those that allow only certain molecules to react based on their shape and size.

2. **Name the Catalyst**: One well-known shape-selective catalyst used in the conversion of alcohol to gasoline is **ZSM-5**.

3. **Explain the Function of ZSM-5**: ZSM-5 is a zeolite catalyst that is widely used in the petroleum industry. It facilitates the conversion of alcohols directly into gasoline through a process called dehydration.

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