CBSE 2022 · Region 3 · Set 1 · Q3 · 2 marks
An Organic compound (A) with molecular formula $\displaystyle \mathrm{C}_{3} \mathrm{H}_{7} \mathrm{NO}$ on heating with $\displaystyle \mathrm{Br}_{2}$ and KOH forms a compound (B). Compound (B) on heating with $\displaystyle \mathrm{CHCl}_{3}$ and alcoholic KOH produces a foul smelling compound (C) and on reacting with $\displaystyle \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{SO}_{2} \mathrm{Cl}$ forms a compound (D) which is soluble in alkali. Write the structures of (A), (B), (C) and (D).
Marking-scheme solution
(A) \(\displaystyle \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CONH}_{2}\)
(B) \(\displaystyle \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{NH}_{2}\)
(C) \(\displaystyle \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{NC}\)
(D)
AminesPreparation of AminesAnalysevery_short_answerhard
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CBSE Class 12 Chemistry past-paper question from the 2022board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.