Question

Which of the following forms gives osazones different from the other three?

• A. $Fructose$
• B. $Glucose$
• C. $Galactose$
• D. $Mannose$

Answer 1

Answer: (C)

$Galactose$

The first two carbon atoms are involved in the osazone test.

In Fructose, mannose, and glucose the orientation of all the carbon atoms except first two are same. Thus, they give similar osazone.

So, Galactose forms osazones different from the other three