Which of the following compounds show geometric isomerism?
Correct answer: B. Option B
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation
For geometric isomerism to be possible two adjacent carbon atoms must have two different groups attached to them which is only in the case of B.If both CH3 are above the cyclic structure it is -cis.If CH3 at one carbon and H at the other carbon is above the cyclic structure then the structure will be -trans. A,C and D are all wrong because they don't satisfy the condition for two adjacent carbons having two different functional groups.
This question appeared on the PMC National MDCAT 2020 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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