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` (acetaldehyde), `CH₃CH₂OH` (ethanol), `CH₃OCH₃` (dimethyl ether), and `CH₃CH₂CH₃` (propane) in increasing order of their boiling points, we need to consider the types of intermolecular forces present in each compound.

### Step 1: Identify the compounds and their functional groups
- **CH₃CHO**: This is acetaldehyde, which is an aldehyde.
- **CH₃CH₂OH**: This is ethanol, which is an alcohol.
- **CH₃OCH₃**: This is dimethyl ether, which is an ether.
- **CH₃CH₂CH₃**: This is propane, which is a hydrocarbon.

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