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WBCS Main Examination 2023 — Paper IV: General Studies II · Question 3 of 200

Q3
General ScienceBiology
Which of the following carbohydrates is not a monosaccharide?
  1. a.Glucose
  2. b.Fructose
  3. c.Ribose
  4. d.Lactose

Answer: (D) Lactose

Lactose (milk sugar) is a disaccharide made of one glucose and one galactose unit. Glucose and fructose are hexose monosaccharides and ribose is a pentose monosaccharide, so A, B and C are all monosaccharides.

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Which of the following carbohydrates is not a monosaccharide? — WBCS Main Examination 2023 Q3 | Prostuti360°