JEE Main 2021 — Biomolecules Question with Solution
From: JEE Main 2021 (Online) 25th February Morning Shift
Question
Which of the glycosidic linkage between galactose and glucose is present in lactose?
Choose an option
Show full solutionCorrect option: C
Correct answer
CC-1 of galactose and C-4 of glucose
Step-by-step explanation
Glycosidic linkage is a type of covalent bond that joins carbohydrate molecules to another group.

In lactose, the glycosidic linkage is formed between C-1 of galactose and C-4, glycosidic of glucose.
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This is a previous-year question from JEE Main 2021, covering the Biomolecules chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.