JEE Main 2020 · ChemistryMultiple choiceSingle correctEasyRecall

JEE Main 8 January 2020, Shift 2, Chemistry Q39

Question 39 of 75 in this shift, Chemistry question 14 of 25, Section A.

Two monomers in maltose are :

(1) $\alpha$ -D-glucose and $\alpha$ -D-Fructose
(2) $\alpha$ -D-glucose and $\alpha$ -D-glucoseOfficial answer
(3) $\alpha$ -D-glucose and $\alpha$ -D-galactose
(4) $\alpha$ -D-glucose and $\beta$ -D-glucose

Official answer

Option 2

NTA final key (Jan 2020).

Chapter: Biomolecules
Topic: Carbohydrates
Idea tested: Maltose Structure and Linkage

Same idea in other shifts

Asked 4× in all

27 Jun 2022, Shift 2 · Q78Given below are two statements. Statement I: Maltose has two $\alpha$ -D-glucose units linked at $\mathrm{C_1}$ and $\mathrm{C_4}$ and is a…EasyTwo statements
25 Feb 2021, Shift 2 · Q49Which of the following is correct structure of $\alpha$ -anomer of maltose ?MediumDiagram basedHas a figure
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.