Which of the following on hydrolysis forms invert sugar?

$D-(+)-\text{Glyceraldehyde} \xrightarrow[(ii) H_2O/H^{+}]{(i) HCN, (iii) HNO_3}$
The products formed in the above reaction are

After digestion,milk is converted into.......

Identify the intermediate formed in the given reaction of $D$-glucose with methanol in the presence of an acid catalyst $(H^+)$.

In addition to the aldehyde group,glucose contains . . . . . . .

The two forms of $D$-glucopyranose obtained from the solution of $D$-glucose are called: