Which of the following pairs are not position isomers ?

1.	Which of the following pairs are not position isomers ?
Answer» Solution :Position isomers have same structure of the CARBON CHAIN but DIFFER only in the position of the functional group or the heteroatom. Here, in OPTION (a) position of OXYGEN atom is the same but the structure of the carbon chain is different. Hence, option (a) correct.

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