Monosaccharides contain a carbonyl group and are hence classified as aldose or ketose. The number of carbon atoms present in the monosaccharide molecule is also considered for classification. In which class of monosaccharide will you place fructose?

Write a note on the preparation and structure of glucose.

Given below are two statements.
Statement $I$: Maltose has two $\alpha$-$D$-glucose units linked at $C_1$ and $C_4$ and is a reducing sugar.
Statement $II$: Maltose has two monosaccharides: $\alpha$-$D$-glucose and $\beta$-$D$-glucose linked at $C_1$ and $C_6$ and it is a non-reducing sugar.
In the light of the above statements,choose the correct answer from the options given below.

Consider the following structures. Which of the pairs represent $D$-fructose and $L$-fructose,respectively?

Which set of terms correctly identifies the carbohydrate shown?
$1$. Pentose $2$. Pentulose $3$. Hexulose $4$. Hexose
$5$. Aldose $6$. Ketose $7$. Pyranose $8$. Furanose

Gun-cotton is obtained when conc. nitric acid reacts with