Hydrogen bonding originates from the dipole-interaction between H-atom and any of the other atom like F,O,N and in some cases with Cl atom. There are two types of H-bonding namely, intermolecular and intra-molecular H-bonding.
Which of the following molecule does not consist of intramolecular H-bonding?

Chloral

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Chloral hydrate

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ortho-hydroxybenzaldehyde

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ortho-chlorophenol

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Solution

The correct option is B Chloral
Intramolecular hydrogen bonding is formed within the same molecules.
Here, chloral hydrates, ortho-hydroxybenzaldehyde, and ortho-chlorophenol show intramolecular hydrogen bonding.
Thus, the molecule which does not show intramolecular hydrogen bonding is chloral.

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