Which of the following will not give iodoform test:
Correct answer: A. Ethanol
- A. Ethanol
- B. Pentan-3-one
- C. Ethanal
- D. Pentan-2-one
Explanation
Ethanol is an alcohol that contains the -OH (hydroxyl) functional group. It does not contain a methyl ketone group (CH3CO-), which is required for the iodoform test. Therefore, ethanol will not give the iodoform test. Therefore, option a is correct.
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About Aldehydes and Ketones
Aldehydes and ketones contain the polar carbonyl group, but aldehydes are generally more readily oxidised and more reactive than ketones. Coverage includes preparation by oxidation or reduction routes, nucleophilic addition of reagents such as hydrogen cyanide and bisulfite, and tests that distinguish aldehydes from ketones.
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