Isomerism and allotropy — task. Chemistry CBSE Live product, Class 10 (2025-26).

Identify the correct answer:

Harish claims two compounds with formula $C_4H_{10}O$ are identical because they have the same number of atoms. After testing, they show different boiling points and chemical reactivity. What's the correct explanation?

$(name) is right; test errors caused the differences
The boiling point is affected only by impurities
The compounds are different isomers with distinct structures
They are isotopes, not isomers

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2. Isomerism and allotropy

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