Which one of the following is the isomer of dimethyl ether?
Correct answer: A. CH3CH2OH
- A. CH3CH2OH
- B. CH3CHO
- C. CH3COOH
- D. HCOOCH3
Explanation
The correct answer is CH3CH2OH, which is ethanol. Ethanol and dimethyl ether are isomers because they share the same molecular formula, C2H6O, but differ in their structural arrangement. Ethanol has a hydroxyl (-OH) group, whereas dimethyl ether has an oxygen atom bridging two methyl groups. The other options, CH3CHO (acetaldehyde), CH3COOH (acetic acid), and HCOOCH3 (methyl formate), have different molecular formulas or functional groups and are not isomers of dimethyl ether.
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About Alcohols and Phenols
Alcohols are classified as primary, secondary or tertiary and studied through their hydrogen bonding, acidity, oxidation and reactions with active metals, acids and halogenating agents. Phenols require separate treatment because the hydroxyl group is attached to an aromatic ring, making their acidity and electrophilic substitution different from ordinary alcohols.
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