Question

By which of the following reagents, both the aldehyde and the primary alcoholic group of glucose are oxidised?

• A. Tollen's reagent
• B. $B{r}_2+H_{2}O$
• C. $HN{O}_3$
• D. All of these

Answer 1

The correct option is C $HN{O}_3$

Tollen's reagent and bromine water both are a mild oxidizing agent, thus oxidize only aldehyde group. $HN{O}_3$, being a strong oxidizing agent, oxidizes both the aldehyde as well as the primary alcoholic group and gives glucaric acid.