JEE Main 2022 · 26 Jul · Shift 1 · Chemistry Q72

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ChemistrySingle correct+4 / -1Question 72 of 90

The difference in the reaction of phenol with bromine in chloroform and bromine in water medium is due to :

Hyperconjugation in substrate

Polarity of solvent

Free radical formation

Electromeric effect the substrate

Answer and worked solution

Official answer: B

Solvent polarity. In water phenol ionises partly and $\mathrm{Br_2}$ is polarised, giving tribromophenol; in $\mathrm{CHCl_3}$ only monobromination occurs.

(B)

Topics:Phenols

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JEE Main 2022 · 26 Jul · Shift 1, Chemistry question 72