JEE Main 2023 — Biomolecules Question with Solution
JEE Main 2023 (01 Feb Shift 1)
Question
Match List I and List II
| List I | List II |
| Test | Functional group / Class of Compound |
| (A) Molisch's Test | (I)Peptide |
| (B) Biuret Test | (II)Carbohydrate |
| (C) Carbylamine Test | (III) Primary amine |
| (D) Schiff's Test | (IV) Aldehyde |
Choose the correct answer from the options given below:
Choose an option
Show full solutionCorrect option: C
Correct answer
C (A) - II, (B) - I, (C) - III, (D) - IV
Step-by-step explanation
Molisch’s test is a chemical test which is used to check for the presence of carbohydrates in a given analyte. It also gives positive test for peptides as they undergo hydrolysis to give saccharides. Carbylamine test is given by primary amine. If a primary amine is present, the isocyanide (carbylamine) is formed which is a foul smelling substance. A purple or magenta coloured adduct gives positive Schiff's test for aldehydes.
| List I | List II |
| Test | Functional group / Class of Compound |
| (A) Molisch's Test | (I)Carbohydrate |
| (B) Molisch's Test | (II) Peptide |
| (C) Carbylamine Test | (III) Primary amine |
| (D) Schiff s Test | (IV) Aldehyde |
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This is a previous-year question from JEE Main 2023, 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.