CBSE 2024 · Region 1 · Set 1 · Q28 · 3 marks
Compound (A) $\displaystyle \left(\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{2}\right)$ on reduction with $\displaystyle \mathrm{LiAlH}_{4}$ gives two compounds(B)and (C). The compound (B) on oxidation with PCC gives compound (D) which upon treatment with dilute NaOH and subsequent heating gives compound (E). Compound (E) on catalytic hydrogenation gives compound(C). The compound (D) is oxidized further to give compound (F) which is found to be a monobasic acid (Molecular weight $\displaystyle =60$ ). Identify the compounds (A), (B), (C), (D), (E) and (F).
Compound (A) $\displaystyle \left(\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{2}\right)$ on reduction with $\displaystyle \mathrm{LiAlH}_{4}$ gives two compounds
(B)
and (C). The compound (B) on oxidation with PCC gives compound (D) which upon treatment with dilute NaOH and subsequent heating gives compound (E). Compound (E) on catalytic hydrogenation gives compound
(C)
. The compound (D) is oxidized further to give compound (F) which is found to be a monobasic acid (Molecular weight $\displaystyle =60$ ). Identify the compounds (A), (B), (C), (D), (E) and (F).
Marking-scheme solution
(A) \(\displaystyle \rightarrow \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{COOCH}_{2} \mathrm{CH}_{3} / \mathrm{CH}_{3} \mathrm{COOCH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{3}\)
(B) \(\displaystyle \rightarrow \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OH}\)
Aldehydes, Ketones and Carboxylic AcidsChemical Reactions of Aldehydes, Ketones and Carboxylic AcidsAnalyseshort_answerhard
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CBSE Class 12 Chemistry past-paper question from the 2024board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.