Assertion : $p-\mathrm{O}_2 \mathrm{~N}-\mathrm{C}_6 \mathrm{H}_5 \mathrm{COCH}_3$ is prepared by Friedel…
Assertion : $p-\mathrm{O}_2 \mathrm{~N}-\mathrm{C}_6 \mathrm{H}_5 \mathrm{COCH}_3$ is prepared by Friedel Crafts acylation of nitrobenzene.
Reason : Nitrobenzene easily undergoes electrophilic substitution reaction.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false.
Solution
The nitro group strongly deactivates the benzene ring towards electrophilic substitution. Nitrobenzene does not undergo Friedel-Craft acylation reaction.