Engineer & Medical

Exam 2017 Chemistry question bank (Chemistry)

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Q1.

Which one of the following is not formed by aldol condensation of a mixture of ethanal and propanal?

(A)
$2-$Methylpent$-2-$enal
(B)
But$-2-$enal
(C)
Pent$-2-$enal
(D)
Hex$-3-$enal
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Q2.

$Propyne$ $\xrightarrow[Hg^{2+} / H_2 O, \Delta]{H^{+}}$ $P$ $\stackrel{Ba(OH)_2}{\rightleftharpoons}$ $Q$ $\xrightarrow{\Delta}$ $R$. $R$ in the above sequence of reactions is:

(A)
$CH_3-CH=CH-CHO$
(B)
opt-fig
(C)
opt-fig
(D)
opt-fig
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