Lactose is a disaccharide composed of two monosaccharide units: D-glucose and D-galactose. When lactose undergoes hydrolysis, typically catalyzed by the enzyme lactase or by heating with dilute acids, the glycosidic bond between these two sugar units is broken, yielding one molecule of glucose and one molecule of galactose.

Maltose is a disaccharide composed of two glucose units linked by an alpha-1,4-glycosidic bond; thus, hydrolysis yields two glucose molecules. Separately, maltose is a common ingredient in malt-based health drinks due to its nutritional profile. While both statements are factually accurate, the chemical structure of maltose (Statement I) does not explain its commercial application in health drinks (Statement II).

Fehling's solution is used to detect reducing sugars. Glucose is a reducing sugar because it contains a free aldehyde group, which reduces the copper(II) ions in Fehling's solution to copper(I) oxide, forming a red precipitate. Sucrose is a non-reducing disaccharide because its glycosidic linkage involves the anomeric carbons of both monosaccharide units, preventing it from reacting with Fehling's solution.

Starch and cellulose are both plant-derived glucose polymers. However, only starch forms a complex with iodine (specifically the amylose component), resulting in a blue-black color. Cellulose does not react with iodine to produce a color change, making statement C incorrect.

Table sugar is chemically known as sucrose, which is a disaccharide composed of one glucose molecule and one fructose molecule linked by a glycosidic bond.

Wine production involves the anaerobic breakdown of sugars (glucose and fructose) by yeast into ethanol and carbon dioxide. This metabolic pathway is known as alcoholic fermentation, a fundamental biochemical process in food chemistry.

The souring of milk is caused by the conversion of lactose into lactic acid by lactic acid bacteria. However, the provided answer key indicates 'salicylic acid', which is factually incorrect as salicylic acid is not a product of milk fermentation. This represents a conflict between the provided key and established biochemical facts.

Fermentation is a metabolic process that produces chemical changes in organic substrates through the action of enzymes. Wine production involves the conversion of sugars into ethanol by yeast. The souring of milk is caused by lactic acid bacteria fermenting lactose, and the souring of moist flour involves microbial fermentation processes. Thus, all listed examples represent various types of fermentation.

Sucrose is a disaccharide composed of one glucose molecule and one fructose molecule linked by a glycosidic bond. The chemical formula for sucrose is C12H22O11. By examining the formula, it is clear that there are 12 carbon atoms, 22 hydrogen atoms, and 11 oxygen atoms in each molecule.

Monosaccharides are the simplest form of carbohydrates that cannot be hydrolyzed further. Most common monosaccharides, such as glucose and fructose, possess a sweet taste. Furthermore, because they are polyhydroxy aldehydes or ketones, heating them causes dehydration and thermal decomposition, resulting in charring and the characteristic smell of burnt sugar.