Which among the following is the simplest sugar?

What is the change in optical rotation with time in a freshly prepared sugar solution called?

Choose the answer that correctly identifies the number of acetals and hemiacetals in the structure of isomaltose.
Acetal $-$ Hemiacetal

Which carbon atoms (numbered from $C_1$ to $C_6$) are involved in the formation of the ring structure of glucose?

$A$ molecule of glucose reacts with $X$ molecules of phenylhydrazine to form osazone. Determine the value of $X$.

Which among the following carbohydrate molecules is not further hydrolysed into smaller units?