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BITSAT 2010
Exam
BITSAT
Year
2010
Subject
Chemistry
Chapter
Aldehydes and Ketones

BITSAT 2010 · Chemistry · Aldehydes and Ketones

Which of the following will not form a yellow precipitate on...

Which of the following will not form a yellow precipitate on heating with an alkaline solution of iodine?

Options

  1. ACH3CH(OH)CH3\mathrm{CH}_{3} \mathrm{CH}(\mathrm{OH}) \mathrm{CH}_{3}
  2. BCH3CH2CH(OH)CH3\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}(\mathrm{OH}) \mathrm{CH}_{3}
  3. CCH3OH\mathrm{CH}_{3} \mathrm{OH}
  4. DCH3CH2OH\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{OH}

Correct answer

C. CH3OH\mathrm{CH}_{3} \mathrm{OH}

Step-by-step solution

CH3OH\mathrm{CH}_{3} \mathrm{OH} does not have −CH(OH)CH3-\mathrm{CH}(\mathrm{OH}) \mathrm{CH}_{3} group hence it will not form yellow precipitate with an alkaline solution of iodine (haloform reaction).
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