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Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceAssertion–reasonMediumConceptual

JEE Main 29 July 2022, Shift 2, Chemistry Q79

Question 79 of 90 in this shift, Chemistry question 19 of 30, Section A.

Given below are two statements. One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Amylose is insoluble in water. Reason R: Amylose is a long linear molecule with more than 200 glucose units. In the light of the above statements, choose the correct answer from the options given below.
  1. (1)Both A and R are correct and R is the correct explanation of A.
  2. (2)Both A and R are correct but R is NOT the correct explanation of A.
  3. (3)A is correct but R is not correct
  4. (4)A is not correct but R is correct.Official answer

Official answer

Option 4

NTA final key.

Chapter
Biomolecules
Topic
Carbohydrates
Idea tested
Structure of Amylose

Same topic in other shifts

All Carbohydrates questions
  1. 4 Apr 2026, Shift 1 · Q68Given below are two statements: Statement I: The structure of Maltose is given below: [structure of maltose: two glucopyranose rings…EasyTwo statementsHas a figure
  2. 4 Apr 2026, Shift 2 · Q68A D-aldotetrose on oxidation with concentrated HNO3\mathrm{HNO_3} resulted in optically inactive dicarboxylic acid. The structure of the…MediumDiagram basedHas a figure
  3. 5 Apr 2026, Shift 1 · Q69Identify the correct statements. A. Glucose exists in two anomeric forms. B. Anomers of glucose differ in configuration at C-1 in cyclic…MediumOther
  4. 5 Apr 2026, Shift 2 · Q69Given below are two statements : Statement I : [figure: two ring (pyranose) structures, each with CH2_2-OH, ring O, H, OH and H…MediumTwo statementsHas a figure
  5. 6 Apr 2026, Shift 2 · Q69Consider the following reactions. Total number of electrons in the π\pi bonds and lone pair of electrons in the product (X) is : [figure:…HardSingle correctHas a figure
  6. 8 Apr 2026, Shift 2 · Q69The incorrect statement from the following with respect to carbohydrates is :EasySingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.