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Answer first
Biomolecules PYQs (previous year questions) for JEE Main: Biomolecules (Chemistry) had 14 questions across the 11 official JEE Main papers we tagged (2016–2026), and appeared in 10 of them. Asked in 3 of 3 years. The concepts asked in the most papers: Carbohydrates, Amino Acids, Vitamins.
Year-wise question count
Asked in 3 of 3 years.
| Year | Papers | Questions | Per paper |
|---|---|---|---|
| JEE Main 2026 | 9 | 12 | 1.3 |
| JEE Main 2017 | 1 | 1 | 1 |
| JEE Main 2016 | 1 | 1 | 1 |
Most-asked concepts
Sorted by the number of papers a concept appeared in.
| Concept | Questions | Papers | Years |
|---|---|---|---|
| Carbohydrates | 6 | 6 | 2026, 2017 |
| Amino Acids | 5 | 5 | 2026, 2016 |
| Vitamins | 2 | 2 | 2026 |
| Proteins | 1 | 1 | 2026 |
How to practise Biomolecules PYQs
- Start with the concepts at the top of the table. They have come back the most.
- Solve one year’s Biomolecules questions from the official PDF against the clock, then check the answer listed below.
- Log every miss as a concept gap, a calculation slip or a misread. Each needs a different fix.
- Once a concept is clean in two papers, move to the next. Then sit a full paper from the year pages.
Questions by year
Each line gives the question number and paper, type, concept, our one-line summary and the official answer, with a link to the official PDF.
JEE Main2026
- Q.69 (2 April, shift 1) · MCQ · Vitamins: Match B and C vitamins with their chemical names (official answer: option 3) PDF
- Q.69 (2 April, shift 2) · MCQ · Amino Acids: Amino acid whose iodinated derivative is the hormone thyroxine (official answer: option 3) PDF
- Q.68 (4 April, shift 1) · MCQ · Carbohydrates: Statements on reducing nature of maltose and lactose structures (official answer: option 4) PDF
- Q.69 (4 April, shift 1) · MCQ · Amino Acids: Match amino acids with one-letter codes and essential type (official answer: option 1) PDF
- Q.68 (4 April, shift 2) · MCQ · Carbohydrates: D-aldotetrose giving optically inactive dicarboxylic acid with HNO₃ (official answer: option 3) PDF
- Q.69 (5 April, shift 1) · MCQ · Carbohydrates: Correct statements on α and β anomers of glucose (official answer: option 4) PDF
- Q.68 (5 April, shift 2) · MCQ · Proteins: Incorrect statement about tertiary structure of proteins (official answer: option 3) PDF
- Q.69 (5 April, shift 2) · MCQ · Carbohydrates: Statements on glucose anomers and chiral centres of glucose and fructose (official answer: option 1) PDF
- Q.69 (6 April, shift 1) · MCQ · Vitamins: Match deficiency diseases with vitamins (official answer: option 3) PDF
- Q.70 (6 April, shift 1) · MCQ · Amino Acids: Match amino acids with tests for side-chain functional groups (official answer: option 2) PDF
- Q.69 (8 April, shift 2) · MCQ · Carbohydrates: Identify incorrect statement about carbohydrates (official answer: option 2) PDF
- Q.70 (8 April, shift 2) · MCQ · Amino Acids: Amino acid giving violet colour with neutral ferric chloride (official answer: option 3) PDF
JEE Main2017
- Q.57 · MCQ · Carbohydrates: Compound acting as reducing sugar in aqueous KOH PDF
JEE Main2016
- Q.58 · MCQ · Amino Acids: Amino acid containing a thiol group PDF
Biomolecules in other exams
The same chapter in other official papers we tagged: JEE Advanced (17 questions), NEET (2 questions).
Other Chemistry chapters
- Some Basic Concepts in Chemistry PYQs
- Atomic Structure PYQs
- Chemical Bonding and Molecular Structure PYQs
- Chemical Thermodynamics PYQs
- Solutions PYQs
- Equilibrium PYQs
- Redox Reactions and Electrochemistry PYQs
- Chemical Kinetics PYQs
- Classification of Elements and Periodicity PYQs
- p-Block Elements PYQs
- d- and f-Block Elements PYQs
- Coordination Compounds PYQs
- Purification and Characterisation of Organic Compounds PYQs
- Some Basic Principles of Organic Chemistry PYQs
- Hydrocarbons PYQs
- Organic Compounds Containing Halogens PYQs
- Organic Compounds Containing Oxygen PYQs
- Organic Compounds Containing Nitrogen PYQs
- Principles Related to Practical Chemistry PYQs
FAQ
How many Biomolecules questions come in JEE Main?
In the official papers we tagged: 12 in 2026 (9 papers), 1 in 2017 (1 paper) and 1 in 2016 (1 paper). That is 14 questions in all, about 5% of Chemistry.
Which Biomolecules topics repeat in JEE Main?
Asked in the most papers: Carbohydrates, Amino Acids, Vitamins. The concept table lists every one with its count.
Are these official JEE Main questions?
Yes. Every question is from an official JEE Main paper hosted on our year pages. The one-line summaries are ours; open the PDF linked beside each question for the full text.