JEE Chemistry 2025 Question with Solution

Given: Statements about products formed during acidic hydrolysis of starch, cane sugar, milk sugar, amylopectin, and amylose.

Find: Which set of statements is correct.

Check each statement using the known hydrolysis products of carbohydrates:

1. Starch hydrolyzes to give only glucose. Therefore, statement (A) is incorrect because it says starch gives galactose.
2. Cane sugar (sucrose) hydrolyzes into equal amounts of glucose and fructose. Therefore, statement (B) is correct.
3. Milk sugar (lactose) hydrolyzes into glucose and galactose. Therefore, statement (C) is correct.
4. Amylopectin is a polysaccharide made of glucose units and on hydrolysis gives only glucose, not fructose. Therefore, statement (D) is incorrect.
5. Amylose also gives only glucose on hydrolysis. Therefore, statement (E) is correct.

So the correct statements are (B), (C) and (E).

Therefore, the correct option is A.

Given: Acidic hydrolysis reactions of common carbohydrates.

Find: The correct combination among statements (A) to (E).

The key facts are:

• Sucrose $\rightarrow$ glucose + fructose
• Lactose $\rightarrow$ glucose + galactose
• Starch $\rightarrow$ glucose
• Amylopectin $\rightarrow$ glucose
• Amylose $\rightarrow$ glucose

Now evaluate:

• (A) Starch gives galactose — false
• (B) Cane sugar gives equal amount of glucose and fructose — true
• (C) Milk sugar gives glucose and galactose — true
• (D) Amylopectin gives glucose and fructose — false
• (E) Amylose gives only glucose — true

Hence, the correct set is (B), (C) and (E) only.

Therefore, the correct option is A.