JEE Main 2005 Chemistry question

Which types of isomerism is shown by 2,3-dichlorobutane?

(1)Diastereo
(2)OpticalCorrect
(3)Geometric
(4)Structural

Answer: (2)

Solution

2,3-Dichlorobutane has two chiral carbons, giving a pair of enantiomers and a meso form — it shows optical isomerism, option (2). It has no C=C, so no geometrical isomerism;

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Question ID VK-038624