Q. An organic alkadiene on reductive ozonolysis produces (i)acetaldehyde (ii)acetone (iii)2-methylpropane-1, 3-dial The formula of alkadiene will be
A) $CH_{3}C = CHCHCH = CHCH_{3}$
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$\ \ \ \ \ \ \ CH_{3}\ \ \ \ \ \ CH_{3}$
B) $CH_{3}CHCH = CCH = {CHCH}_{3}$
$\ \ \ \ \ \ \ \ |\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ |$
$\ \ \ \ \ \ \ CH_{3}\ \ \ \ \ \ \ \ \ CH_{3}$
C) $CH_{3}C = CHCHC = {CHCH}_{3}$
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$CH_{3}\ \ \ \ \ \ \ \ \ \ \ \ CH_{3}$
D) $CH_{3}CH_{2}CHCH = CHC = CH_{2}$
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$CH_{3}\ \ \ \ \ \ \ \ \ \ \ \ \ \ CH_{3}$
Explanation
(a)
Since the alkadiene on reductive ozonolysis gives acetaldehyde $\left( CH_{3}CHO \right),$ acetone $(CH_{3}COCH_{3})$ and 2-methylpropane-1, 3-dial $\lbrack OHCCH\left( CH_{3} \right)CHO\rbrack$, the structure of alkadiene will be obtained as
[image:13_image249.emf]
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.