Question:medium

Assertion (A): Maltose is a reducing sugar.
Reason (R): One of the two glucose units can open to expose free aldehydic group in solution.

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Reducing sugars must have a free aldehyde or ketone group available.
Updated On: Feb 24, 2026
  • Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
  • Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A).
  • Assertion (A) is true, but Reason (R) is false.
  • Assertion (A) is false, but Reason (R) is true.
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The Correct Option is A

Solution and Explanation

Maltose is a reducing sugar due to the presence of a free hemiacetal group on one of its glucose units, which can open to reveal an aldehyde in solution.
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