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JEE Main202225 Jul 2022Morning ShiftChemistryAlcohols Phenols and EthersActual

Given below are two statements : Statement I : On heating with KHSO 4 , glycerol is dehydrated and acrolein is formed. Statement II : Acrolein has fruity odour and can be used to test glycerol's presence. Choose the correct option.

Options

  1. ABoth Statement I and Statement II are correct.
  2. BBoth Statement I and Statement II are incorrect
  3. CStatement I is correct but Statement II is incorrect
  4. DStatement I is incorrect but Statement II is correct

Correct answer

C. Statement I is correct but Statement II is incorrect

Step-by-step solution

It is a colorless liquid with a piercing, acrid smell. The smell of burnt fat (as when cooking oil is heated to its smoke point) is caused by glycerol in the burning fat breaking down into acrolein. It does not have fruity smell so, statement II is incorrect.

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