The compound with the highest boiling point is [tex]CH_{3} CH_{2} OH[/tex] .
So, option C is correct one.
The boiling point depend two factors,
The boiling point of ether is less than alcohols because alcohol form hydrogen-bonding .The hydrogen bond is strongest bond. So, ethyl alcohol and methyl alcohol has more boiling point than dimethy ether.
The propane molecules have only van-der waals force of attraction, which is weakest force of attraction.So, propane has lowest boiling point.
The molecular mass of ethanol is greater than methaol. So, ethanol has higher boiling point.
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