Engineer & Medical

Exam 2024 Chemistry question bank (Chemistry)

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Q1.

What are $X$ and $Y$ respectively in the following reaction sequence?

figure

(A)
$NH_2NH_2, C_6H_5SO_2Cl$ / Pyridine
(B)
$NH_2NH_2, (CH_3CO)_2O$
(C)
$NH_2OH, C_6H_5SO_2Cl$ / Pyridine
(D)
$NH_2OH, (CH_3CO)_2O$
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Q2.

What are $Y$ and $Z$ respectively in the given reaction sequence?

figure

(A)
$CH_3COCH_3, CH_3CH=CHCHO$
(B)
$CH_3CH_2CHO, CH_3CH_2CH=C(CH_3)CHO$
(C)
$CH_3CH_2CHO, CH_3CH_2CH=C(CH_3)CHO$
(D)
$CH_3CH_2CH_2OH, CH_3CH_2COOH$
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