Question

Which of the following pairs from the same osazone?

• A. Glucose and fructose
• B. Glucose and galactose
• C. Glucose and arabinose
• D. Lactose and maltose

Answer 1

Answer: (A)

All monosaccharides which differ in configuration at $C_1$ and $C_2$ gives the same osazone. Since, glucose and fructose differ from each other only in configuration at $C_1$ and $C_2$ therefore, they give the same osazone. All other options given in the questions do not satisfy this condition and hence, do not form the same osazone.