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Alcohols, Phenols, and Ethers — Chemistry STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryAlcohols, Phenols, and Ethers1 Mark
Question
Among ethanol, dimethyl ether, methanol and propanal, the isomers are$:$
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Answer

Ethanol $\ce{(C_2​H_5​OH)}$ and dimethyl ether $\ce{(CH_{3​}−O−CH_3​)}$ have same molecular formula but different functional groups, so they are isomers.

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