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JEE Main levelOne or more correct optionsDifficulty 2 of 3nm197

Which of the following statements about halogen-substituted benzene rings (structural isomers) is/are correct?

  1. A has 3 isomers
  2. B has 4 isomers
  3. C has 3 isomers
  4. D has 4 isomers

Answer: A, C

Place the substituents on the six ring positions and remove equivalent arrangements: C6H3Cl3 3; C6H3Cl2Br 6 (1,2,3-, 1,2,4- and 1,3,5- patterns give 2+3+1); C6H2Cl4 3; C6H4ClBr 3. Correct: A, C.
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