Match List-I (Test) with List-II (Observation):
List-I (Test) | List-II (Observation)
A. Br water test | I. Yellow-orange or orange-red precipitate formed B. Ceric ammonium nitrate test | II. Reddish orange color disappears C. Ferric chloride test | III. Red color appears D. -DNP test | IV. Blue, green, violet, or red color appears
A-III, B-II, C-I, D-IV
A-II, B-III, C-IV, D-I
A-III, B-IV, C-I, D-II
A-IV, B-I, C-II, D-III
Correct answer:B
Standard Method
Given: A matching problem between qualitative organic tests and their observations.
Find: The correct correspondence between List-I and List-II.
For each test, use its standard qualitative observation:
Br water test is used for unsaturation. The reddish-orange colour of bromine disappears on reaction, so A \rightarrow II.
Ceric ammonium nitrate test is used for alcohols. A red colour appears, so B \rightarrow III.
Ferric chloride test is used for phenols. Blue, green, violet, or red colour may appear due to complex formation, so C \rightarrow IV.
-DNP test is used for aldehydes and ketones. A yellow-orange or orange-red precipitate is formed, so D \rightarrow I.
Thus, the correct matching is A-II, B-III, C-IV, D-I.
Therefore, the correct option is B.
Confusing the Br water test with a precipitate-forming test is incorrect because bromine water is identified by decolourisation, not by precipitate formation. Match it with disappearance of reddish-orange colour.
Assigning the ferric chloride test to carbonyl compounds is wrong because this test is characteristic for phenols, which give coloured complexes. Use the observation involving blue, green, violet, or red colour.
Mixing up ceric ammonium nitrate and -DNP leads to wrong matching. Ceric ammonium nitrate gives a red colour with alcohols, whereas -DNP gives a yellow-orange or orange-red precipitate with carbonyl compounds.
Get unlimited AI-adaptive practice, mastery tracking, and an AI tutor that explains every step — free to start.
