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JEE Main 202229 JulyEvening Shift
Exam
JEE Main
Year
2022
Date
29 July
Shift
Evening Shift
Subject
Chemistry
Chapter
Alcohols Phenols and Ethers

JEE Main 2022 · 29 July · Evening Shift · Chemistry · Alcohols Phenols and Ethers

When enthanol is heated with conc. H _ 2 SO _ 4 , a gas is...

When enthanol is heated with conc. H2SO4{H}_{2}{SO}_{4}, a gas is produced. The compound formed, when this gas is treated with cold dilute aqueous solution of Baeyer's reagent, isWhen enthanol is heated with conc. H _ 2 SO _ 4 , a gas is produced. The compound formed, when this gas is treated with

Options

  1. AFormaldehyde
  2. BFormic acid
  3. CGlycol
  4. DEthanoic acid

Correct answer

C. Glycol

Step-by-step solution

Ethanol undergoes dehydration by heating it with concentrated H2SO4{H}_{2}{SO}_{4} at 443K443K.

C2H5OH→443KH2SO4CH2=CH2+H2O{C}_{2}{H}_{5}OH\mathop{\to}_{443K}^{{H}_{2}{SO}_{4}}{CH}_{2} = {CH}_{2} + {H}_{2}O

Alkenes on reaction with cold, dilute, aqueous solution of potassium permanganate (Baeyer’s reagent) produce vicinal glycols. Decolorisatlon of KMnO4{KMnO}_{4} solution is used as a test for unsaturation.

When enthanol is heated with conc. H _ 2 SO _ 4 , a gas is produced. The compound formed, when this gas is treated with

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