A) 1
B) 2
C) 3
D) 4
Correct Answer: D
Solution :
\[PhHC=HC-\underset{\begin{smallmatrix} | \\ H \end{smallmatrix}}{\overset{\begin{smallmatrix} OH \\ |* \end{smallmatrix}}{\mathop{C}}}\,-C{{H}_{3}}\]Maximum 4 -isomers are possible as,\[\left. \begin{align} & \,\,\,\,\,\,\text{cis}-\text{R} \\ & \,\,\,\,\,\,\text{cis}-\text{S} \\ & \text{trans}-\text{R} \\ & \text{trans}-\text{S} \\ \end{align} \right\}\text{4}-\text{isomers}\]
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