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Chemistry · 2024 · 3 marks
CBSE 2024 · Region 3 · Set 1 · Q28
Give the structures of A, B and C in the following reactions: (a) CH_3 CH_2 Cl → KCN A → LiAlH_4 B →[0^° C ] HNO_2 C
Give the structures of $\displaystyle \mathrm{A}, \mathrm{B}$ and C in the following reactions :
(a)
$\displaystyle \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{Cl} \xrightarrow{\mathrm{KCN}} \mathrm{A} \xrightarrow{\mathrm{LiAlH}_{4}} \mathrm{~B} \xrightarrow[0^{\circ} \mathrm{C}]{\mathrm{HNO}_{2}} \mathrm{C}$
(b)
Marking-scheme solution
(a)
A: \(\displaystyle \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CN}\)
B: \(\displaystyle \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{NH}_{2}\)
C: \(\displaystyle \mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{OH}\)
(b)
A: \(\displaystyle \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{NH}_{2}\)
B: \(\displaystyle \mathrm{C}_{6} \mathrm{H}_{5} \mathrm{~N}_{2} \mathrm{ClC}\) :
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CBSE Class 12 Chemistry past-paper question from the 2024 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.