Which of the following pairs of compounds are | vedclass

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(B) Functional isomers are compounds that have the same molecular formula but different functional groups.$A$: sec-Butyl alcohol $(CH_3CH(OH)CH_2CH_3)

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Butanal and butan$-2-$one

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(B) Functional isomers are compounds that have the same molecular formula but different functional groups.$A$: sec-Butyl alcohol $(CH_3CH(OH)CH_2CH_3)$ and diethyl ether $(CH_3CH_2OCH_2CH_3)$ have different molecular formulas.$B$: Butanal $(CH_3CH_2CH_2CHO)$ and butan$-2-$one $(CH_3COCH_2CH_3)$ both have the molecular formula $C_4H_8O$. Butanal contains an aldehyde group,while butan$-2-$one contains a ketone group. Therefore,they are functional isomers.$C$: Propan$-1-$ol $(C_3H_8O)$ and propanal $(C_3H_6O)$ have different molecular formulas.$D$: These are the same compound.Thus,the correct pair is $B$.

Which of the following pairs of compounds are functional isomers?

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