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Chemistry · Biomolecules

JEE Main 2026 — 22 January, Morning Shift — Question 62

Given below are two statements : one is labelled as Statement I and the other is labelled as Statement II :

Statement I: Sucrose is dextrorotatory. However sucrose upon hydrolysis gives a solution having mixture of products. This solution shows laevorotation.

Statement II: Hydrolysis of sucrose gives glucose and fructose. Since the laevorotation of glucose is more than the dextrorotation of fructose the resulting solution becomes laevorotatory.

In the light of the above statements, choose the correct answer from the options given below.

  1. Option A:

    Statement I is false but Statement II is true.

  2. Option B:

    Both Statement I and Statement II are false.

  3. Option C:

    Both Statement I and Statement II are true.

  4. Option D:

    Statement I is true but Statement II is false.

    Correct

Answer: D

Step-by-step solution

C12H22O11+H2O→HClC6H12O6+C6H12O6\mathrm{C}_{12} \mathrm{H}_{22} \mathrm{O}_{11}+\mathrm{H}_{2} \mathrm{O} \xrightarrow{\mathrm{HCl}} \mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6}+\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{6} D- Glucose + D fructose [α]D-sucrose =+66.5∘,[α]D-Glucose =+52.5∘[\alpha]_{\text {D-sucrose }}=+66.5^{\circ},[\alpha]_{\text {D-Glucose }}=+52.5^{\circ}, [α]D-Fructose =−92.4∘[\alpha]_{\text {D-Fructose }}=-92.4^{\circ} ⇒ Sucrose is dextrorotatory and hydrolysed product is laevorotatory.

Answer key and solution verified before publishing.

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Exam
JEE Main 2026
Paper
22 January, Morning Shift
Subject
Chemistry
Chapter
Biomolecules
Topic
Introduction to Biomolecules & Carbohydrates
Given below are two statements : one is labelled as Statement I and… | JEE Main 2026 PYQ with Solution · DhiX AI