Total number of structurally isomeric straight chain alkynes with the formula, C6H10 is equal to ‘X’.Total number of structurally isomeric branched chain pentynes with the formula, C6H10 is equal to ‘Y’. Sum of X and Y is

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answer is B.

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Detailed Solution

Total number of alkynes (structural and stereo) = 8 ;Number of structurally isomeric alkynes = 7 ;Number of structurally isomeric terminal alkynes = 4 ;Number of structurally isomeric non terminal (internal) alkynes = 3 ;Number of structurally isomeric straight chain alkynes = 3 ;Number of structurally isomeric branched chain alkynes = 4 ;Number of stereo isomers (alkynes only) = 2 ;Number of enantiomeric pairs (alkynes only) = 1 ;Number of structurally isomeric straight chain hexynes = 3 ;Number of structurally isomeric branched chain pentynes = 3 ;Number of structurally isomeric branched chain butynes = 1 ;*3-methyl-pent-1-yne has dextro and laevo forms

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