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MCQMediumJEE 2023Detection of Functional Groups

JEE Chemistry 2023 Question with Solution

Match List I with List II:

A matching table with List I containing four reagents and List II containing four aromatic compounds labeled I, II, III and IV with different functional groups to be identified.
  • A

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

  • B

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

  • C

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

  • D

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

Answer

Correct answer:A

Step-by-step solution

Standard Method

Given: A matching question between reagents in List I and aromatic compounds in List II.

Find: The correct correspondence between each reagent and the compound whose functional group it detects.

From the solution, the extracted explanation is inconsistent with the displayed answer key and appears unrelated to the image-based matching table. However, the correct answer field states Correct Answer: (1), so the correct option is A.

Therefore, the correct option is A, i.e. A-III, B-IV, C-II, D-I.

Common mistakes

  • Confusing the reagent with the compound instead of the functional group it detects is a common mistake. The matching must be based on the characteristic test given by each reagent, not on superficial structural similarity.

  • Ignoring the image labels I, II, III, and IV can lead to incorrect matching. First identify the functional group in each labeled structure, then assign the suitable reagent.

  • Relying on the solution text here would be incorrect because it discusses water impurities and ppm limits, which does not match this question. Use the provided correct answer mapping when the solution is clearly unrelated.

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