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JEE MainChemistryAldehydes and Ketones

Consider the organic compound 4-(1-hydroxyethyl)-2-aminophenol. Which of the following reagents will NOT give a positive test with this compound?

Options

  1. AAlkaline solution of copper sulphate and sodium citrate
  2. BNeutral FeCl ₃ solution
  3. CAlkaline chloroform solution
  4. DPotassium iodide and sodium hypochlorite

Correct answer

A. Alkaline solution of copper sulphate and sodium citrate

Step-by-step solution

The given compound is 4-(1-hydroxyethyl)-2-aminophenol. It contains three functional groups: 1. A phenolic - OH group, which gives a characteristic violet colour with neutral FeCl ₃ solution. 2. A primary aromatic amine ( - NH ₂ ), which gives a foul-smelling isocyanide with alkaline chloroform solution (carbylamine test). 3. A secondary methyl alcohol group ( - CH ( OH ) CH ₃ ), which is oxidized by NaOCl to a methyl ketone and subsequently gives a yellow precipitate of iodoform with potassium iodide and sodium hy

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