CUET · CHEMISTRY · PYQ PAPER 2023
Answer the question on the basis of passage given below:
Aldehydes are generally more reactive than ketones in nucleophilic addition reactions due to steric and electronic reasons. Sterically, the presence of two relatively large substituents in ketones hinders the approach of nucleophile to carbonyl carbon more than aldehydes having only one such substituent Electronically aldehydes are more reactive than ketones because two alkyl groups reduce the elctrophilicity of the carbonyl more effectively than in former.
Match List I with List II.
| \(LISTI\) | \(LISTII\) |
| A. & \(CH _3 CH _2 CH _2 CHO \longrightarrow CH _3 CH _2 CH _2 COOH\) | I. \(CrO _3- H _2 SO _4\) |
| B. Cyclohexene → Hexane-1,6-dioic acid | II. \(\frac{ H _3 O ^{+}}{\Delta}\) |
| C. \(CH _3 CH _2 CH _2 CH _2 OH \rightarrow CH _3 CH _2 CH _2 COOH\) | III. Ammonical \(AgNO _3\) |
| D. \(CH _3 CONH _2 \rightarrow CH _3 COOH\) | IV. \(KMnO _4- H _2 SO _4 / \Delta\) |
Choose the correct answer from the options given below:
- A \(A-III, B-IV, C-II, D-I\)
- B \(A-III, B-IV, C-I, D-II\)
- C \(A-III, B-II, C-I, D-IV\)
- D \(A-III, B-I, C-II, D-IV\)
Answer & Solution
Correct Answer
(B) \(A-III, B-IV, C-I, D-II\)
Step-by-step Solution
Detailed explanation
A. \(CH_3 CH_2 CH_2 CHO \longrightarrow CH_3 CH_2 CH_2 COOH\) matches III. Ammonical \(AgNO_3\) B. Cyclohexene → Hexane-1,6-dioic acid matches IV. \(KMnO_4- H_2 SO_4 / \Delta\) C. \(CH_3 CH_2 CH_2 CH_2 OH \rightarrow CH_3 CH_2 CH_2 COOH\) matches I. \(CrO_3- H_2 SO_4\) D.…
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