Concept:Hydrolysis of a carbohydrate breaks it into its constituent monosaccharide units depending on the type of glycosidic bonds present.
Explanation:Raffinose is a trisaccharide containing one unit each of
galactose,
glucose, and
fructose.
On hydrolysis, it gives one molecule of each:
glucose,
galactose, and
fructose.
This exactly matches the products stated in the question.
Maltose on hydrolysis gives only two
glucose units, so it is not the answer.
Lactose gives one
glucose and one
galactose, but no
fructose.
Stachyose gives one
glucose, one
fructose, and two
galactose units, so its composition does not match exactly.
Therefore, the carbohydrate that gives one molecule each of
glucose,
galactose, and
fructose on hydrolysis is
raffinose.
Answer:C.
Raffinose