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  4. Which is obtained on treating phenol, with dilute HNO3 ?

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Q. Which is obtained on treating phenol, with dilute $ HN{{O}_{3}} $ ?

BVP MedicalBVP Medical 2003

Solution:

$ -OH $ group is an activating group, hence increase electron density on o- and p-position in benzene ring. Thus phenol very easily undergoes nitration (electrophilic substitution) and give trinitro phenol i.e., picric acid.

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