(B) In $o-$nitrophenol,the $-OH$ group forms an intramolecular hydrogen bond with the adjacent nitro group. This makes the $-OH$ group unavailable for

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$o-$Nitrophenol shows intramolecular $H-$bonding.

(B) In $o-$nitrophenol,the $-OH$ group forms an intramolecular hydrogen bond with the adjacent nitro group. This makes the $-OH$ group unavailable for intermolecular hydrogen bonding with water molecules. Consequently,$o-$nitrophenol exhibits lower solubility in water compared to $m-$ and $p-$nitrophenols,which form intermolecular hydrogen bonds with water.

Class 11 Chemistry Chemical Bonding and Molecular Structure Hydrogen bonding

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$o-$Nitrophenol is less soluble in water than $p-$ and $m-$nitrophenols because:

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A
$o-$Nitrophenol is more volatile than $m-$ and $p-$ isomers.
B
$o-$Nitrophenol shows intramolecular $H-$bonding.
C
$o-$Nitrophenol shows intermolecular $H-$bonding.
D
Melting point of $o-$nitrophenol is lower than those of $m-$ and $p-$ isomers.