MCQMediumJEE 2023Diazonium Salts & Reactions

JEE Chemistry 2023 Question with Solution

Match List I with List II:

List I shows reagents A aniline, B HBr with heat, C Cu and HCl, D CuCN or KCN. List II shows products I fluorobenzene, II benzonitrile, III azo-linked aniline derivative, IV chlorobenzene.
  • A

    A-I, B-III, C-IV, D-II

  • B

    A-III, B-I, C-II, D-IV

  • C

    A-III, B-IV, C-II, D-II

  • D

    A-I, B-IV, C-III, D-I

Answer

Correct answer:C

Step-by-step solution

Standard Method

Given: A match-the-following question based on conversions of aniline diazonium salt.

Find: The correct correspondence between List I and List II.

From the solution, the extracted matching statements are:

  • A. F\mathrm{F^-} gives the entry marked for A
  • B. sulfate-related reagent condition gives the entry marked for B
  • C. nitrate-related entry gives the product marked for C
  • D. zinc-related entry gives the product marked for D

The concluding line in the provided solution states: Thus, the correct matching is A-I, B-II, C-III, D-IV.

The answer key says Correct Answer: (3), which maps to option C.

Therefore, using the provided correct-answer mapping, the correct option is C.

Source Consistency Note

The provided the solution is inconsistent with the option-key mapping.

  • The heading says the correct option is D.
  • The explanation text concludes A-I, B-II, C-III, D-IV, which does not match the listed options exactly.
  • The provided Correct Answer: (3) maps to option C.

Following the instruction to derive the final answer from the answer key, the answer is recorded as C.

Common mistakes

  • Matching the option from the explanatory paragraph instead of the provided answer key. The solution content is internally inconsistent, so the final option must be taken from the answer key.

  • Confusing reagent-product relations in diazonium salt chemistry. Similar aromatic products can look alike, so each reagent must be mapped carefully rather than by visual similarity alone.

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