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JEE Main levelSingle correct optionDifficulty 2 of 3nm139

In which pair are the two compounds chain isomers?

Abutan-1-ol and butan-2-ol
Bmethyl propyl ether and diethyl ether
Cbutan-1-ol and 2-methylpropan-1-ol
Dbutan-2-ol and diethyl ether

Answer: C

Chain isomers have the same functional group in the same sense but a different carbon skeleton. Butan-1-ol (straight chain) and 2-methylpropan-1-ol (branched) are both primary alcohols. The other pairs are position, functional and metamers respectively.

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