MCQ
Which of the following pair is $C_2$ -epimer ?
- A$D-$ Glucose, $D-$ Maltose
- ✓$D-$ Glucose, $D-$ Mannose
- C$D-$ Allose, $D-$ Ribose
- D$D-$ Glucose, $D-$ Arabinose

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$Ag | Ag^+(0.1\,M) || Ag^+(1\,M) | Ag$ at $298\,K$ is ............ $\mathrm{V}$

$\begin{array}{*{20}{c}}
O \\
{||} \\
{C{H_3} - C - N{H_2}}
\end{array}$ $\xrightarrow{{KOBr}}$ $(A)$
$\begin{array}{*{20}{c}}
O \\
{||} \\
{C{H_3} - C - N{H_2}}
\end{array}$ $\xrightarrow{{LiAlH_4}}$ $(B)$
[Atomic masses $\mathrm{Cu}: 63.54\, \mathrm{u}, \mathrm{S}: 32\, \mathrm{u}, \mathrm{O}: 16 \,\mathrm{u}, \mathrm{H}: 1\, \mathrm{u}]$