Question

$D-$ glucose $\stackrel{\text{ Tollen’s reagent }}{\to }(A)$
$D-$ glucose $\stackrel{B{r}_2\text{-water }}{\to }(B)$
$(A)$ and $(B)$ are:

• A. gluconic acid, gluconic acid
• B. glucaric acid, gluconic acid
• C. salt of gluconic acid, gluconic acid
• D. salt of gluconic acid, glucaric acid

Answer 1

Answer: (C)

Tollen's reagent is a mild oxidising agent and easily oxidises the aldehyde group, but can not oxidise the ketone or alcohol group and form salt of gluconic acid.

$B{r}_2/H_{2}O$ is a mild oxidising agent and easily oxidises the aldehyde group, but cannot oxidise the ketone or alcohol group.