Question:medium

On hydrolysis, which of the following carbohydrates gives only β-glucose ?

Show Hint

Cellulose = beta-1,4 polymer of beta-D-glucose; starch/maltose give alpha-glucose; sucrose gives glucose+fructose.
Updated On: Jun 15, 2026
  • Starch
  • Sucrose
  • Maltose
  • Cellulose
Show Solution

The Correct Option is D

Solution and Explanation

Work from the building blocks of each carbohydrate. Sucrose is glucose + fructose, so it cannot give only glucose; starch (amylose/amylopectin) and maltose are built from $\alpha$-D-glucose units.
Cellulose alone is a polymer of $\beta$-D-glucose linked $\beta$-1,4, so its complete hydrolysis yields $\beta$-glucose exclusively. Correct option: (D) Cellulose.
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