How many optical isomers does glucose have?

What type of glycosidic linkages are developed when excess glucose is to be stored for future use in animals?

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

The reaction of concentrated sulphuric acid with carbohydrates $(C_{12}H_{22}O_{11})$ is an example of

Which of the following tests confirms the presence of an aldehydic group in glucose?

Match List-$I$ with List-$II$:

List-$I$	List-$II$
$A$. Glucose $+ HI$	$I$. Gluconic acid
$B$. Glucose $+ Br_{2}$ water	$II$. Glucose pentacetate
$C$. Glucose $+$ acetic anhydride	$III$. Saccharic acid
$D$. Glucose $+ HNO_{3}$	$IV$. Hexane

Choose the correct answer from the options given below.