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Which of the following statements about compound Y is accurate?

1. It reacts positively with Tollens' reagent and is a functional isomer of X.
2. It reacts positively with Tollens' reagent and is a geometric isomer of X.
3. It reacts positively with the iodoform test and is a functional isomer of X.
4. It reacts positively with the iodoform test and is a geometric isomer of X.

Correct answer: It reacts positively with the iodoform test and is a functional isomer of X.

Solution

A positive iodoform test indicates the presence of a COCH3 group or an equivalent structure. Since Y is a functional isomer of X, the correct statement is the one combining iodoform positivity with functional isomerism.

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