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JIPMER 2005
Exam
JIPMER
Year
2005
Subject
Chemistry
Chapter
Alcohols Phenols and Ethers

JIPMER 2005 · Chemistry · Alcohols Phenols and Ethers

Which of the following compound gives iodoform test?

Which of the following compound gives iodoform test?

Options

  1. ACH3CN\mathrm{CH}_3 \mathrm{CN}
  2. BCH3OH\mathrm{CH}_3 \mathrm{OH}
  3. CCH3COCH3\mathrm{CH}_3 \mathrm{COCH}_3
  4. DC6H5OH\mathrm{C}_6 \mathrm{H}_5 \mathrm{OH}

Correct answer

C. CH3COCH3\mathrm{CH}_3 \mathrm{COCH}_3

Step-by-step solution

Compounds containing (\left(O ∣∣CH3−C−\begin{array}{ll} \quad \quad \quad \mathrm{O} \\ \qquad \quad ~||\\ \mathrm{CH}_3-\mathrm{C}- \\ \\ \end{array}\right)) group give the iodoform test. CH3−C−O−CH3+3\mathrm{CH}_3-\mathrm{C}-\mathrm{O}-\mathrm{CH}_3+3\mathrm{I}2+NaOH⟶CHI3+HCOONa+H2O_2+\mathrm{NaOH} \longrightarrow \mathrm{CHI}_3+\mathrm{HCOONa}+\mathrm{H}_2 \mathrm{O} Iodoform (yellow ppt)
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