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Saturday, 31 October

JEE Main 2022 · ChemistryMultiple choiceTwo statementsEasyRecall

JEE Main 27 June 2022, Shift 2, Chemistry Q78

Question 78 of 90 in this shift, Chemistry question 18 of 30, Section A.

Given below are two statements. Statement I: Maltose has two α\alpha-D-glucose units linked at C1\mathrm{C_1} and C4\mathrm{C_4} and is a reducing sugar. Statement II: Maltose has two monosaccharides: α\alpha-D-glucose and β\beta-D-glucose linked at C1\mathrm{C_1} and C6\mathrm{C_6} and it is a non-reducing sugar. In the light of the above statements, choose the **correct** answer from the options given below.
  1. (1)Both Statement I and Statement II are true.
  2. (2)Both Statement I and Statement II are false.
  3. (3)Statement I is true but Statement II is false.Official answer
  4. (4)Statement I is false but Statement II is true.

Official answer

Option 3

NTA final key.

Same idea in other shifts

Asked 4× in all
  1. 25 Feb 2021, Shift 2 · Q49Which of the following is correct structure of α\alpha-anomer of maltose ?MediumDiagram basedHas a figure
  2. 8 Jan 2020, Shift 2 · Q39Two monomers in maltose are :EasySingle correct
  3. 4 Sep 2020, Shift 1 · Q42What are the functional groups present in the structure of maltose ?MediumSingle 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.