NEET Biology Biomolecules Based Practice Questions & Answers with Viewers Discussion and Detailed Explanation

Biomolecules Topic Based

Question & Answer Discuss:

Which of the following is a reducing sugar?

(a) Gluconic acid

(b) Galactose

(c) b-methyl galactoside

(d) Sucrose

Answer: (b)

All those sugars which have free aldehyde or ketone group are called reducing sugars. These are able to reduce cupric ions ($Cu^{+2}$) into cuprous ions ($Cu^{+}$). Sucrose, starch are non-reducing sugars.

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