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Chemistry · 2023 · 3 marks
CBSE 2023 · Region 1 · Set 2 · Q28
How do you convert the following: (Any three) (a) Phenol to 2-Hydroxybenzaldehyde (b) Anisole to 2-Methoxyacetophenone (c) Propene to Propan-2-ol (d)…
How do you convert the following: (Any three)
(a)
Phenol to $\displaystyle 2$-Hydroxybenzaldehyde
(b)
Anisole to $\displaystyle 2$-Methoxyacetophenone
(c)
Propene to Propan-$\displaystyle 2$-ol
(d)
Ethanol to Ethanal
Marking-scheme solution
(a)
(b)
(c)
$\displaystyle \mathrm{CH_3CH=CH_2 + H_2O} \;\xrightleftharpoons{\;\mathrm{H^+}\;}\; \mathrm{CH_3-CH(OH)-CH_3}$
(d)
$\displaystyle \mathrm{CH_3-CH_2OH} \;\xrightarrow{\;\mathrm{PCC}\;}\; \mathrm{CH_3-CHO}$
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CBSE Class 12 Chemistry past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.