Chemistry - STEREO ISOMERISM Question with Solution | TestHub
ChemistrySTEREO ISOMERISMGEOMETRICAL ISOMERISMEasy2 minQB
ChemistryEasysingle choice
Which of the following statements about cis-trans isomers is correct ?
(1) The cis isomer has a higher melting point than the trans isomer.
(2) Cis and trans isomers have the same functional group.
(3) All alkenes exhibit cis-trans isomerism.
Options:
Answer:
B
Solution:
(1) is false : the more symmetric trans isomer packs better in the crystal lattice and generally has the higher melting point (the cis isomer usually has the higher boiling point). (2) is true : cis-trans isomers have identical connectivity, hence the same functional group. (3) is false : only alkenes with two different groups on each double-bond carbon show cis-trans isomerism.
Ans. (2) only
Stream:JEESubject:ChemistryTopic:STEREO ISOMERISMSubtopic:GEOMETRICAL ISOMERISM
⏱ 2mℹ️ Source: QB
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