Q. How many of the following compounds will give positive iodoform test?
Butan ol, cyclobutylethanol, benzyl alcohol, ethanol, propan ol, phenol, propan ol, pentan ol, methanol, methylpropan ol, butan ol, phenylethanol

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Answer: 5

Solution:

Iodoform test is given by alcohols containing group linked to carbon or hydrogen atom. Thus, butan , -cyclobutylethanol, ethanol, propan , -phenylethanol will give positive iodoform test.