Which isomer of amino-benzoic acid has highest intra-molecular hydrogen bonding?
A
Ortho
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B
Meta
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C
Para
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D
All have the same
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Solution
The correct option is A Ortho Hydrogen bonds can occur between molecules (intermolecular)
or within different parts of a single molecule (intramolecular).
From the image it is clear that ortho isomer of amino-benzoic acid has highest intra-molecular hydrogen bonding.