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Write the method of preparation of pheno...

Write the method of preparation of phenol from chlorobenzene by Dow 's process. What happens when phenol reacts with
conc. `H_2 SO_4`.

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MODERN PUBLICATION-SAMPLE PAPER 2020-EXERCISE
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  19. Write the method of preparation of phenol from chlorobenzene by Dow 's...

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  20. Arrange the following in the increasing order of their acidic strength...

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