Q90 / 180 · AIIMS 2011 · Chemistry

Assertion : Fructose is a reducing sugar. Reason : It has a ketonic group.

  • A
    If both assertion and reason are true and reason is the correct explanation of assertion.
  • Correct answer
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
  • C
    If assertion is true but reason is false.
  • D
    If both assertion and reason are false.

Solution

All those carbohydrates which contain aldehydic or ketonic group in the hemiacetal or hemiketal form and reduce Tollen's or Fehling's solutions are reducing sugars. All monosaccharides are reducing sugars (whether aldoses or ketoses). Fructose is a monosaccharide with keto group.

Hence, the correct answer is option: 'B'.

Relevant Questions