Question

Which of the following reagents will oxidise glucose to gluconic acid?
Br$_2$/H$_2$O
HNO$_3$
[Ag(NH$_3$)$_2$]^+ / OH$^-$

• A. I, II only
• B. I, III only
• C. II, III only
• D. I, II, III

Hint:

Gluconic acid formation requires mild oxidation of the aldehyde group only, not the entire molecule.

Answer 1

The Correct Option is B

\begin{itemize} \item \(Br$_2$/H$_2$O\) and Tollen's reagent \([Ag(NH$_3$)$_2$]^+\) oxidize the aldehyde group of glucose to gluconic acid. \item HNO$_3$ is a strong oxidizing agent; it oxidizes both -CHO and -CH$_2$OH to dicarboxylic acids, not just gluconic acid. \end{itemize}