CBSE 2022 · Region 4 · Set 3 · Q3 · 2 marks
(i)$\displaystyle \left(\mathrm{CH}_{3}\right)_{3} \mathrm{C}-\mathrm{CHO}$ does not undergo aldol condensation. Why ?(ii)Distinguish between Acetophenone and Benzophenone with the help of a chemical test.
(i)
$\displaystyle \left(\mathrm{CH}_{3}\right)_{3} \mathrm{C}-\mathrm{CHO}$ does not undergo aldol condensation. Why ?
(ii)
Distinguish between Acetophenone and Benzophenone with the help of a chemical test.
Marking-scheme solution
(i) It does not have \(\displaystyle \alpha\)-hydrogen.
(ii) Add \(\displaystyle \left(\mathrm{NaOH}+\mathrm{I}_{2}\right)\) and heat, acetophenone gives yellow precipitate of iodoform while benzophenone does not.
Aldehydes, Ketones and Carboxylic AcidsChemical Reactions of Aldehydes, Ketones and Carboxylic AcidsUnderstandvery_short_answermedium
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