1.

Which of the following molecules can be optically active

Answer»

`CH_2 = C= CH_2`
`CH_2 = C = CHCl`
`ClCH = C = CHCl`
all the above

Solution :

Allens are optically active even though they do not have any chiral centre but acts as chiral MOLECULE due to the PRESENCE of chiral axis.Hence ALLENES with different substituted ATOMS are optically active.


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