What (which isomer) is the major product of nitration of phenol with dilute nitric acid?

Answer would be ortho-nitro phenol due to intramolecular H-bonding. A hypothetical chelated ring would be formed.

Para and ortho(major) products could be separated by distillation process because ortho product is steam volatile.

Hope you got it.

Nitration of phenol with dilute nitric acid give the mixture of ortho-nitrophenol and para-nitrophenol.

But the major product is ortho-nitrophenol(30%–40%).