Question

Identify correct conversion during acidic hydrolysis from the following: (A) Starch gives galactose.
(B) Cane sugar gives equal amount of glucose and fructose.
(C) Milk sugar gives glucose and galactose.
(D) Amylopectin gives glucose and fructose.
(E) Amylose gives only glucose.
Choose the correct answer from the options given below:

• A. (B), (C) and (E) only
• B. (B), (C) and (D) only
• C. (A), (B) and (C) only
• D. (C), (D) and (E) only

Hint:

Remember that sucrose gives glucose and fructose, lactose gives glucose and galactose, and starch yields glucose.

Answer 1

The Correct Option is A

To solve this problem, we must understand the process of acidic hydrolysis for different carbohydrates:

1. Starch: Starch is a polysaccharide that hydrolyzes to give only glucose. Starch does not give galactose, so option (A) is incorrect.
2. Cane Sugar (Sucrose): Cane sugar is a disaccharide composed of glucose and fructose. Upon acidic hydrolysis, it splits into equal parts glucose and fructose, making option (B) correct.
3. Milk Sugar (Lactose): Lactose is a disaccharide consisting of glucose and galactose. When hydrolyzed, it yields these two monomers. This makes option (C) correct.
4. Amylopectin: Similar to starch, amylopectin is a polysaccharide that hydrolyzes to yield only glucose. It does not produce fructose, so option (D) is incorrect.
5. Amylose: A component of starch, amylose hydrolyzes to give only glucose. Thus, option (E) is correct.

Based on these interpretations, the correct conversions during acidic hydrolysis are (B), (C), and (E).