The possible number of steroisomers of the product of following reaction would be :
$P h - C H = C H - C H (C H_{3}) - C H O N H_{2} O H - ---- \to$

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Solution

The correct option is D 8
Aldehyde reacts with hydroxyl amine to form oxime.
$P h C H = C H - C H (C H_{3}) - C H O + N H_{2} O H$ $\to$ $P h C H = C H - C H (C H_{3}) - C H = N O H + H_{2} O$
The product $P h C H = C H - C H (C H_{3}) - C H = N O H$ contains only one chiral carbon atom. Hence, it has $2^{n} = 2^{1} = 2$ optical isomers.
In addition it contains two double bonds. Hence, it also has geometrical isomers. Each double bond will give cis and trans isomers.
Thus, total number of possible stereoisomers are 8.

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[X]

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