Chemistry - STEREO ISOMERISM Question with Solution | TestHub
ChemistrySTEREO ISOMERISMGEOMETRICAL ISOMERISMMedium2 minQB
ChemistryMediumsingle choice
Which of the following statements are correct ?
(1) All alkenes show geometrical isomerism.
(2) Allenes with an even number of cumulated double bonds and different groups at both ends show optical isomerism.
(3) cis-trans isomers are diastereomers.
(4) Maleic acid is trans-butenedioic acid.
Options:
Answer:
B
Solution:
Ans. (B). (1) False : alkenes with two identical groups on a double-bond carbon cannot show G.I. (2) True : cumulenes with an even number of C=C have perpendicular end planes and are axially chiral when each end carries two different groups. (3) True : cis-trans isomers are stereoisomers that are not mirror images, i.e. diastereomers. (4) False : maleic acid is cis-butenedioic acid; fumaric acid is the trans isomer.
Stream:JEESubject:ChemistryTopic:STEREO ISOMERISMSubtopic:GEOMETRICAL ISOMERISM
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