Question

Match List I with List II

Choose the correct answer from the options given below:

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

Answer 1

The Correct Option is B

The objective is to correlate the tests in List-I with their corresponding observations in List-II. Each test and its typical outcome are detailed below:

1. Br₂ water test: Detects unsaturated compounds (alkenes, alkynes). Reaction with these compounds decolors the reddish-orange bromine solution. This corresponds to \(II\) (Reddish orange color disappears).
2. Ceric ammonium nitrate test: Primarily used for detecting alcohols. The presence of alcohol causes a color change to red in the ceric ammonium nitrate reagent. This matches \(III\) (Red color appears).
3. Ferric chloride test: Identifies phenols. Phenols react with ferric chloride, yielding colored complexes ranging from blue, green, violet, to red. This aligns with \(IV\) (Blue, Green, Violet, or Red color appear).
4. 2, 4-DNP test: Used for carbonyl compounds (aldehydes, ketones). The test produces a yellow, orange, or red precipitate. This corresponds to \(I\) (Yellow orange or orange-red precipitate formed).

The matching based on the analysis is as follows:

• A-II: Br₂ water test - Reddish orange color disappears
• B-III: Ceric ammonium nitrate test - Red color appears
• C-IV: Ferric chloride test - Blue, Green, Violet, or Red color appear
• D-I: 2, 4-DNP test - Yellow orange or orange-red precipitate formed

The definitive pairing is: A-II, B-III, C-IV, D-I.