Which one of the following compounds show cis-trans isomerism?
Correct answer: C. 1-bromo-2-chloropropene
- A. 1-butene
- B. 1-hexene
- C. 1-bromo-2-chloropropene
- D. Propene
Explanation
Explanation:1-bromo-2-chloropropene has two different groups (bromo and chloro) attached to the double bond, allowing for the possibility of cis-trans isomerism. 1-butene has only one substituent attached to the double bond and cannot exhibit cis-trans isomerism.1-hexene also has only one substituent attached to the double bond and cannot exhibit cis-trans isomerism. Propene has only one substituent attached to the double bond and cannot exhibit cis-trans isomerism.
This question appeared on the UHS MDCAT 2009 paper, which you can sit online with every answer explained.
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About Isomerism
Isomerism occurs when compounds have the same molecular formula but different atom arrangements or spatial orientations. The content includes chain, position, functional, metameric and tautomeric isomerism, along with geometrical and optical isomerism, including cis-trans forms, E/Z notation, chirality and enantiomers.
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