(B) Due to intramolecular $H-$bonding, the $-OH$ group is not available to form a hydrogen bond with water molecules.Hence, $o-$nitrophenol is sparing

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

(B) Due to intramolecular $H-$bonding, the $-OH$ group is not available to form a hydrogen bond with water molecules.Hence, $o-$nitrophenol is sparingly soluble in water, while $m-$ and $p-$nitrophenols are more soluble due to their ability to form intermolecular $H-$bonding with water.

Class 12 Chemistry Alcohols, Phenols and Ethers Properties of Phenols

Medium

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

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