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Compound A(C 9 H 10 O) shows positive iodoform test. Oxidation of A with KMnO 4 /KOH given acid B(C 8 H 6 O 4 ). Anhydride of B is used for the preparation of phenolphthalein. Compound A is:

1. O CH 3
2. CH 3 CH 3 O
3. CH 2 — C— H CH 3 O
4. CH 2 CH 3 O

Correct answer: CH 2 CH 3 O

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