In a diagnostic test for methyl ketones, iodine and sodium hydroxide are added to an unknown liquid. Which isomer produces a yellow precipitate?
Q1. In a diagnostic test for methyl ketones, iodine and sodium hydroxide are added to an unknown liquid. Which isomer produces a yellow precipitate?
Answer: Pentan-2-one
Explanation: Pentan-2-one contains a methyl keto group necessary for the iodoform reaction. Pentan-3-one lacks this specific structural feature and remains unreacted.