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JEE Advanced levelOne or more correct optionsDifficulty 3 of 3nc107

Select the correct statements about electrophilic substitution of benzene derivatives.

  1. Anitration of acetanilide gives mainly 4-nitroacetanilide
  2. Bdirect nitration of aniline with the nitrating mixture gives only ortho and para nitroanilines
  3. Cbenzene is nitrated by conc. and conc. at 323-333 K to give nitrobenzene
  4. Dfurther nitration of nitrobenzene under more vigorous conditions gives mainly 1,3-dinitrobenzene

Answer: A, C, D

Nitrobenzene is formed at 323-333 K, and its meta-directing nitro group gives 1,3-dinitrobenzene under forcing conditions. Acetanilide has a para-directing acetamido group that gives mainly the para product. Direct nitration of aniline also gives some meta isomer through the anilinium ion, so the third statement is false.
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