Sucrose is a $.......$.

Which of the following is a disaccharide?

What is the general formula or structural formula of a polysaccharide?

Glucose gives many reactions of aldehyde because:

Which monosaccharide does not have the ratio of $H$ and $O$ atoms as $2:1$?

Statement $P$ : Disaccharides can undergo hydrolysis by boiling with dilute acids or by reacting with appropriate enzymes.
Statement $Q$ : The result of hydrolysis is the release of their constituent monosaccharide units.