Biomolecules

When the following aldohexose exists in its D-configuration, the total number of stereoisomers in its pyranose form is
$$\ce{OHC-CH2-CH(OH)-CH(OH)-CH(OH)-CH2OH}$$

A decapeptide (Mol. Wt. 796) on complete hydrolysis gives glycine (Mol. Wt. 75), alanine and phenylalanine. Glycine contributes 47.0 % to the total weight of the hydrolysed products. The number of glycine units present in the decapeptide is

The following carbohydrate is

The correct statement about the following disaccharide is

The total number of basic groups in the following form of lysine is

The correct statement(s) about the following sugars X and Y is(are)

Cellulose upon acetylation with excess acetic anhydride/$\ce{H2SO4}$ (catalytic) gives cellulose triacetate whose structure is

Match the chemical substances in Column I with type of polymers/type of bonds in Column II. Indicate your answer by darkening the appropriate bubbles of the 4 × 4 matrix given in the ORS.

STATEMENT-1: Glucose gives a reddish-brown precipitate with Fehling's solution.

because

STATEMENT-2: Reaction of glucose with Fehling's solution gives CuO and gluconic acid.