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Identify the correct statements : The presence of –NO2 group in benzene ring A. activates the ring towards electrophilic substitutions. B. deactivates the ring towards electrophilic substitutions. C. activates the ring towards nucleophilic substitutions. D. deactivates the ring towards nucleophilic substitutions.

1. (1) B and D Only
2. (2) C and A Only
3. (3) A and D Only
4. (4) B and C Only

Correct answer: (4) B and C Only

Solution

The –NO2 group is a strong electron-withdrawing group, which decreases the electron density of the benzene ring, making it less reactive towards electrophilic substitutions (deactivating the ring). Additionally, it also deactivates the ring towards nucleophilic substitutions due to its electron-withdrawing nature.

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