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Chemistry · PYQ NEET UG 2024
हिन्दीChoose the correct answer from the options given below: Column I (Reaction)Column II (Reagents/Condition) AAlkene ozonolysisIAnhydrous \( \text{AlCl}_3 \) BFriedel-Crafts alkylationII\( \text{CrO}_3 \) COxidation of alkenes to carbonyl compoundsIII\( \text{KMnO}_4, \text{KOH}, \Delta \) DSide-chain oxidation of toluene to benzoic acidIV(i) \( \text{O}_3 \), (ii) \( \text{Zn-H}_2\text{O} \)
Choose the correct answer from the options given below:
| Column I (Reaction) | Column II (Reagents/Condition) | ||
|---|---|---|---|
| A | Alkene ozonolysis | I | Anhydrous \( \text{AlCl}_3 \) |
| B | Friedel-Crafts alkylation | II | \( \text{CrO}_3 \) |
| C | Oxidation of alkenes to carbonyl compounds | III | \( \text{KMnO}_4, \text{KOH}, \Delta \) |
| D | Side-chain oxidation of toluene to benzoic acid | IV | (i) \( \text{O}_3 \), (ii) \( \text{Zn-H}_2\text{O} \) |
Correct answer · Option 1
A-IV, B-I, C-II, D-III
Explanation
A. Alkene ozonolysis involves reaction with \( \text{O}_3 \) followed by \( \text{Zn-H}_2\text{O} \), matching with IV.
B. Friedel-Crafts reaction uses anhydrous \( \text{AlCl}_3 \) as a Lewis acid catalyst, matching with I.
C. Oxidation of alkenes using reagents like \( \text{CrO}_3 \), matching with II.
D. Side-chain oxidation of alkylbenzenes to benzoic acid is carried out using alkaline \( \text{KMnO}_4 \) followed by heating \( (\text{KMnO}_4, \text{KOH}, \Delta) \), matching with III.
Therefore, the correct matching is A-IV, B-I, C-II, D-III.
B. Friedel-Crafts reaction uses anhydrous \( \text{AlCl}_3 \) as a Lewis acid catalyst, matching with I.
C. Oxidation of alkenes using reagents like \( \text{CrO}_3 \), matching with II.
D. Side-chain oxidation of alkylbenzenes to benzoic acid is carried out using alkaline \( \text{KMnO}_4 \) followed by heating \( (\text{KMnO}_4, \text{KOH}, \Delta) \), matching with III.
Therefore, the correct matching is A-IV, B-I, C-II, D-III.
