The possible number of steroisomers of the product of following reaction reagent 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
Aldehydes reacts with hydroxyl amine to form oxime.
$P h - C H = C H - C H (C H_{3}) - C H O + N H_{2} O H ⇌ P h - C H = C H - C H (C H_{3}) - C H = N O H + H_{2} O$
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-trans isomers. Thus, total number of possible stereoisomers are 8.

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