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Chemistry - Biomolecules

Practise 61 NEET previous year questions on Biomolecules, compiled from papers spanning 2002 to 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty NEET tests.

Biomolecules has been asked in 24 of the 39 years of NEET papers analysed (1988–2026), with 71 questions in all. 80% of them were easy, 20% moderate and 0% tough. Most of its questions came from 2026, with 9 questions that year. In the last three years (2024–2026) it had 18 questions across 13 papers, about 1.4 per paper.

The chapter's 11 topics are not weighted equally: Proteins (15 questions, 21%), Nucleic Acids (11 questions, 15%), and Vitamins (10 questions, 14%) have been asked the most. Over the last five years the most frequent topics have been Enzymes (5), Protein (4), and Vitamins (3).

  1. 1The correct statement with regard to the secondary structure of DNA/RNA is :2026 (Cancelled)Nucleic Acids
  2. 2The correct statement about peptides and proteins is2026 (Re-NEET)Proteins
  3. 3The amino acid that gives a red-blood colour on treating its sodium fusion extract with sodium nitroprusside is2026 (Re-NEET)Properties and Preparation of Amino Acids
  4. 4Match the vitamins in List I with their sources in List II List I List II A. vitamin A I. meat B. vitamin B II. sunflower oil C. vitamin E I2026 (Re-NEET)Vitamins
  5. 5Match List - I with List - II Choose the correct answer from the options given below:2025Vitamins
  6. 6Sugar 'X' A. is found in honey. B. is a keto sugar. C. exists in and - anomeric forms. D. is laevorotatory. ' X ' is :2025Carbohydrates
  7. 7The reagents with which glucose does not react to give the corresponding tests/products are A. Tollen's reagent B. Schiff's reagent C. HCN D2024Preparation and Reactions of Glucose
  8. 8Given below are two statements : Statement I: Glycogen is similar to amylose in its structure. Statement II : Glycogen is| found in yeast an2024 (Re-NEET)Disaccharides and Polysaccharides
  9. 9Given below are two statements : Statement I: A unit formed by the attachment of a base to 1 ' position of sugar is known as nucleoside Stat2023 (All India)Nucleic Acids
  10. 10Cheilosis occurs due to deficiency of2023 (Manipur)Vitamins
  11. 11The incorrect statement regarding enzymes is:2022 (Phase 1)Carbohydrates
  12. 12The incorrect statement about denaturation of proteins is2022 (Phase 2)Proteins
  13. 13The RBC deficiency is deficiency disease of:2021Vitamins
  14. 14Sucrose on hydrolysis gives2020 (Phase 1)Disaccharides and Polysaccharides
  15. 15Which of the following is a basic amino acid?2020 (Phase 1)Properties and Preparation of Amino Acids
  16. 16The reaction of concentrated sulphuric acid with carbohydrates C 12 H 22 O 11 is an example of2020 (Phase 2)Preparation and Reactions of Glucose
  17. 17Deficiency of which vitamin causes osteomalacia?2020 (Phase 2)Vitamins
  18. 18Which of the following statement is not true about glucose?2020 (Phase 2)Carbohydrates
  19. 19The non-essential amino acid among the following is:2019 (All India)Properties and Preparation of Amino Acids
  20. 20Which structure(s) of proteins remains(s) intact during denaturation process?2019 (Odisha)Proteins
  21. 21Which of the following compounds can form a zwitter ion?2018Properties and Preparation of Amino Acids
  22. 22What is the difference between amylose and amylopectin?2018Disaccharides and Polysaccharides
  23. 23Which of the following statements is not correct?2017Proteins
  24. 24In a protein molecule various amino acids are linked together by:2016 (Phase 1)Proteins
  25. 25The correct statement regarding RNA and DNA, respectively is:2016 (Phase 1)Nucleic Acids
  26. 26Which one given below is a non-reducing sugar?2016 (Phase 1)Disaccharides and Polysaccharides
  27. 27Which one of the following compounds shows the presence of intramolecular hydrogen bond?2016 (Phase 2)Disaccharides and Polysaccharides
  28. 28The central dogma of molecular genetics states that the genetic information flows from:2016 (Phase 2)Proteins
  29. 29The correct corresponding order of names of four aldoses with configuration given below respectively, is2016 (Phase 2)Carbohydrates
  30. 30D ( + ) glucose reacts with hydroxyl amine and yield an oxime. The structure of the oxime would be:2014Preparation and Reactions of Glucose
  31. 31In DNA the linkages between different nitrogenous bases are:2013 (Karnataka)Nucleic Acids
  32. 32Deficiency of vitamin causes the disease2012 (Screening)Vitamins
  33. 33Which one of the following sets of monosaccharides forms sucrose?2012 (Screening)Disaccharides and Polysaccharides
  34. 34Which of the following is not a fat soluble vitamin?2011 (Mains)Vitamins
  35. 35Which of the statements about 'Denaturation' given below are correct? Statements (A) Denaturation of proteins causes loss of secondary and t2011 (Mains)Proteins
  36. 36Which one of the following statements is not true regarding lactose?2011 (Screening)Carbohydrates
  37. 37Fructose reduces Tollen's reagent due to2010 (Mains)Carbohydrates
  38. 38Which one of the following does not exhibit the phenomenon of mutarotation?2010 (Screening)Carbohydrates
  39. 39The state of hybridization of and of the hydrocarbon - is in the following sequence :2009 (Mains)Nucleic Acids
  40. 40The segment of DNA, which acts as the instrumental manual for the synthesis of the protein is2009 (Screening)Nucleic Acids
  41. 41In DNA, the complimentary bases are2008 (Mains)Nucleic Acids
  42. 42Which one of the following is an amine hormone?2008 (Mains)Proteins
  43. 43The dissociation equilibrium of a gas can be represented as The degree of dissociation is ' ' and is small compared to 1. The expression rel2008 (Screening)Proteins
  44. 44The values of \(K_{p_1}\) and \(K_{p_2}\) for the reactions \(X Y+Z\) ...(i) and \(A 2 B\) ...(ii) are in ratio of \(9: 1\). If degree of di2008 (Screening)Nucleic Acids
  45. 45RNA and DNA are chiral molecules, their chirality is due to:2007Nucleic Acids
  46. 46Which of the following vitamins is water soluble?2007Vitamins
  47. 47The human body does not produce:2006Vitamins
  48. 48Which one of the following is a peptide hormone?2006Proteins
  49. 49Which functional group participates in disulphide bond formation in proteins?2005Proteins
  50. 50The cell membranes are mainly composed of:2005Fats

Frequently Asked Questions

1.How many questions are available for Biomolecules?

This chapter includes 61 questions compiled from NEET papers spanning 2002 to 2026.

2.Are these questions only from NEET, or from other exams too?

These are NEET questions specifically for the Biomolecules chapter. Questions from other exams like AIIMS or JIPMER are organised separately under their respective exam sections.

3.Is Biomolecules an important chapter for NEET Chemistry?

Biomolecules has appeared in 24 of the 25 years of NEET papers covered here, with 61 questions across 35 papers - about 2 per paper it appears in.

4.What is the difficulty level of Biomolecules questions in NEET?

Of the 71 questions analysed for this chapter, 80% are easy, 20% moderate and 0% tough. 2026 had the most, with 9 questions.

5.Which topics in Biomolecules should I focus on?

These topics have carried the most weightage in Biomolecules:

  • Proteins - 15 questions (21%)
  • Nucleic Acids - 11 questions (15%)
  • Vitamins - 10 questions (14%)
6.Is Biomolecules's weightage in NEET going up or down?

Across all 35 papers analysed, Biomolecules has averaged about 1.7 questions per paper. In the last three years (2024–2026), that average has fallen, at about 1.4 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.