Question

Which of the following is a false statement regarding oligosaccharide ?

• A. Lactose on hydrolysis gives one glucose unit and one galactose unit.
• B. Maltose on hydrolysis gives one glucose unit and one fructose unit.
• C. Sucrose on hydrolysis gives one glucose unit and one fructose unit.
• D. Raffinose on hydrolysis gives one glucose unit, one fructose unit and one galactose unit.

Hint:

Maltose gives two glucose units on hydrolysis, not glucose and fructose.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept
Oligosaccharides give a small number of monosaccharide units on hydrolysis.

Step 2: Check each statement
Lactose gives glucose and galactose. Sucrose gives glucose and fructose. Raffinose gives glucose, fructose and galactose, so these are true.

Step 3: Maltose
Maltose is made of two \(\alpha\)-D-glucose units joined by a C1-C4 glycosidic bond, so hydrolysis gives only glucose and the statement about glucose and fructose is false.

Final Answer:
The false statement is that maltose gives glucose and fructose. \[ \boxed{\text{(B) }\text{Maltose on hydrolysis gives one glucose unit and one fructose unit.}} \]