Pentan- 2- one and 3- methylbutan- 2- one are a pair of
A
Functional isomers
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B
Chain isomers
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C
Positional isomers
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D
Sterioisomers
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Solution
The correct option is BChain isomers Chain isomerism arises due to difference in the arrangement of carbon atom constituting the chain. Both Pentan- 2- one and 3- methylbutan- 2- one have the same molecular formula C5H10O. Given below are their structure: Both compounds differ in their chain structure. Therefore, they are chain isomers.