Which of the following does not show geometrical isomerism?
A
1,2-Dichloro-1-pentene
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B
1,3-Dichloro-2-pentene
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C
2,3-Dimethyl-2-pentene
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D
1,4-Dichloro-2-pentene
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Solution
The correct option is B 2,3-Dimethyl-2-pentene 2, 3- dimethyl -2- pentene. Geometrical isomerism is not possible as it has two same groups on double bonded carbon.