Identify the product $Y$ in the following reaction:
$\text{Maltose}$ $\xrightarrow{\text{Hydrolysis}} X$ $\xrightarrow{\text{dil. HNO}_3 \text{ (excess)}} Y$

$C_2$-epimer of $D$-Glucose is

Which reagent/s can be used to distinguish glucose and fructose?
$I$. Bromine water
$II$. Tollen's reagent
$III$. Schiff's reagent

Which of the following is correct?
Pentaacetate of glucose $\xrightarrow{\text{Tollen's reagent}} +ve$ test $(A)$
Pentaacetate of glucose $\xrightarrow{\text{Benedict's reagent}} +ve$ test $(B)$
Pentaacetate of glucose $\xrightarrow{\text{Schiff's reagent}} -ve$ test $(C)$
Pentaacetate of glucose $\xrightarrow{NaHSO_3} -ve$ test $(D)$

Select the correct statement among the following:

The sugar present in $DNA$ is: