Which of the following pairs are not isomeric compounds

1.	Which of the following pairs are not isomeric compounds
A.	Ethyl ethanoate and methyl propanoate
B.	Butanone and butanal
C.	Ethoxy propane and propoxy ethane
D.	Methoxy methane and ethanol
Answer» D. Methoxy methane and ethanol

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Which of the following pairs are not isomeric compounds

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