Chemistry · Biomolecules

JEE Main 2025 — 28 January, Evening Shift — Question 32

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 :

  1. Option A:

    (C), (D) and (E) only

  2. Option B:

    (A), (B) and (C) only

  3. Option C:

    (B), (C) and (E) only

    Correct
  4. Option D:

    (B), (C) and (D) only

Answer: C

Step-by-step solution

(A) Starch →H+/H2O\xrightarrow{\mathrm{H}^{+} / \mathrm{H}_{2} \mathrm{O}} Glucose

(B) Cane sugar →H+/H2O\xrightarrow{\mathrm{H}^{+} / \mathrm{H}_{2} \mathrm{O}} glucose + fructose (Sucrose)

                                                             $50 \% \quad 50 \%$

(C) Milk sugar →H+/H2O\xrightarrow{\mathrm{H}^{+} / \mathrm{H}_{2} \mathrm{O}} glucose + galactose (Lactose)

(D) Amylopectin →H+/H2O\xrightarrow{\mathrm{H}^{+} / \mathrm{H}_{2} \mathrm{O}} Glucose

(E) Amylose →H+/H2O\xrightarrow{\mathrm{H}^{+} / \mathrm{H}_{2} \mathrm{O}} Glucose

So, correct options are B, C and E only

Answer key and solution verified before publishing.

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Exam
JEE Main 2025
Subject
Chemistry
Chapter
Biomolecules
Topic
Introduction to Biomolecules & Carbohydrates
Identify correct conversion during acidic hydrolysis from the… | JEE Main 2025 PYQ with Solution · DhiX AI