Which monosaccharide does not exhibit optical | vedclass

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Question

(A) Optical isomerism is exhibited by molecules that contain at least one chiral carbon atom (an asymmetric carbon atom bonded to four different group

Vedclass · Accepted Answer

Dihydroxyacetone

Vedclass · Answer

(A) Optical isomerism is exhibited by molecules that contain at least one chiral carbon atom (an asymmetric carbon atom bonded to four different groups).Dihydroxyacetone $(CH_2OH-CO-CH_2OH)$ is the simplest ketose sugar.In dihydroxyacetone,the central carbon atom is bonded to two identical $-CH_2OH$ groups,meaning it lacks a chiral center.Therefore,dihydroxyacetone does not exhibit optical isomerism.All other options (Glyceraldehyde,Erythrose,and Ribose) contain at least one chiral carbon atom and thus exhibit optical isomerism.

Which monosaccharide does not exhibit optical isomerism?

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