Which of the following has higher dipole moment and why?
But -1- ene or But -1- yne

Explanation

To determine which compound, But-1-ene or But-1-yne, has a higher dipole moment, we need to analyze their structures and the hybridization of the carbon atoms involved.

### Step-by-Step Solution:

1. **Draw the Structures**:
- **But-1-ene**: The structure is CH2=CH-CH2-CH3. In this molecule, there is a double bond between the first two carbon atoms.
- **But-1-yne**: The structure is CH≡C-CH2-CH3. In this molecule, there is a triple bond between the first two carbon atoms.

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