Ortho�nitrophenol is less soluble in water than p� and m� nitrophenols why?

Ortho Nitrophenol is less soluble in water than para and meta nitrophenols because

Ortho Nitrophenol is more volatile in steam than those of Meta and Para isomers

Ortho Nitrophenol shows Intramolecular hydrogen bonding

Ortho Nitrophenol shows Intermolecular hydrogen bonding

The melting point is of Ortho Nitrophenol is lower than that of Meta and para isomers

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