Among the given compounds, ethanol C2H5−OH has the highest boiling point due to intermolecular hydrogen bonding. Usually, alcohols have higher boiling points than alkyl halides, alkanes, and ketones of comparable molar mass.
This is due to the fact that alcohol can form intermolecular hydrogen bonds. This leads to the molecular association. Energy is required to break inter-molecular hydrogen bonds. This increases the boiling points.
Therefore, the correct option is A
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Condition for maximum yield of C2H5Cl is
Ethanol when reacted with PCl5 gives A, POCl3 and HCl. A reacts with silver nitrite to form B and AgCl . A and B respectively are