AP EAMCET2005ChemistryGeneral Organic Chemistry

Which of the following is a pair of functional isomers?

Options

ACH ₃ COCH ₃, CH ₃ CHO
BC ₂ H ₅ CO ₂ H , CH ₃ CO ₂ CH ₃
CC ₂ H ₅ CO ₂ H , CHCO ₂ C ₂ H ₅
DCH ₃ CO ₂ H , CH ₃ CHO

Correct answer

B. C ₂ H ₅ CO ₂ H , CH ₃ CO ₂ CH ₃

Step-by-step solution

Carboxylic acid and esters show functional group isomerism. When two compounds have same molecular formula but different functional groups, then functional isomerism arises. e.g., C ₂ H ₅ COOH and CH ₃ COOCH ₃

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