The melting point of phenol is relatively high for an aryl compound because of the:

hydrogen bonding

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ionic bonding

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covalent bonding

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all of them

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Solution

The correct option is C hydrogen bonding
Melting point of phenol (42 deg C) is relatively high for an aryl compound because of the hydrogen bonding.

The H atom of $- O H$ group of one molecule of phenol is involved in hydrogen bond formation with $O$ atom of $- O H$ group of second molecule of phenol.

This leads to intermolecular association and increases melting point.

Option A is correct.

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