In which of the following, functional group isomerism is not possible? निम्नलिखित में से किसमें प्रकार्यक समूह समावयवता संभव नहीं है?

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In which of the following, functional group isomerism is not possible? निम्नलिखित में से किसमें प्रकार्यक समूह समावयवता संभव नहीं है?