Arrange the following compounds in increasing order of their boiling points.
`CH_(3)CHO,CH_(3)CH_(2)OH,CH_(3)OCH_(3),CH_(3)CH_(2)CH_(3)`

Explanation

To arrange the compounds `CH₃CHO`, `CH₃CH₂OH`, `CH₃OCH₃`, and `CH₃CH₂CH₃` in increasing order of their boiling points, we need to consider the types of intermolecular forces present in each compound.

### Step-by-Step Solution:

1. **Identify the Compounds**:
- `CH₃CHO`: Acetaldehyde (an aldehyde)
- `CH₃CH₂OH`: Ethanol (an alcohol)
- `CH₃OCH₃`: Dimethyl ether (an ether)
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