Which pair has the same functional group?
Answer and explanation
Correct answer: Methanol and ethanol
The governing idea is that compounds with the same functional group show related chemical behaviour and belong to the same homologous family. Methanol, CH3OH, and ethanol, C2H5OH, both contain the hydroxyl group (–OH), so both are alcohols. Ethanol has –OH, ethanoic acid has –COOH, ethene has a C=C bond, and methane has no such functional group. Hence option A is the only correct pair.
Frequently asked questions
What is the correct answer to this question?
Methanol and ethanol
Why is this the correct answer?
The governing idea is that compounds with the same functional group show related chemical behaviour and belong to the same homologous family. Methanol, CH3OH, and ethanol, C2H5OH, both contain the hydroxyl group (–OH), so both are alcohols. Ethanol has –OH, ethanoic acid has –COOH, ethene has a C=C bond, and methane has no such functional group. Hence option A is the only correct pair.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Carbon and its Compounds. Topic: Functional groups.
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