What are carbohydrates called that cannot be hydrolyzed into simpler compounds?

$\beta-D$-Glucose and $\alpha-D$-Glucose are:

It is best to carry out reactions with sugars in neutral or acid medium and not in alkaline medium. This is because in alkaline medium,sugars undergo one of the following changes:

Identify $A$ in the following reaction:
$C_6H_{12}O_6 \xrightarrow{\text{dil. } HNO_3} A$

Carbohydrates are stored in the human body as

Identify the monomer of starch.