Chemistry - Biomolecules
Practise 13 WBJEE previous year questions on Biomolecules, compiled from papers spanning 2009 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 WBJEE tests.
Biomolecules has been asked in 8 of the 18 years of WBJEE papers analysed (2009–2026), with 13 questions in all. 46% of them were easy, 38% moderate and 15% tough. Most of its questions came from 2011, with 3 questions that year. In the last three years (2024–2026) it had 2 questions across 3 papers, about 0.7 per paper.
The chapter's 5 topics are not weighted equally: Nucleic Acids (4 questions, 31%), Properties and Preparation of Amino Acids (4 questions, 31%), and Carbohydrates (3 questions, 23%) have been asked the most. Over the last five years the most frequent topics have been Carbohydrates (1) and Disaccharides and Polysaccharides (1). Properties and Preparation of Amino Acids has produced the most tough questions (1).
- 1Which of the following statement(s) is/are correct?2026Disaccharides and Polysaccharides
- 2Which of the following statement(s) is/are correct about the given compound?2026Carbohydrates
- 31. 2. 3. 4. The dipeptides which may be obtained from the aminoacids glycine and alanine are2021Nucleic Acids
- 4ADP and ATP differ in the number of2017Nucleic Acids
- 5The number of amino acids and number of peptide bonds in a linear tetrapeptide (made of different amino acids) are respectively2014Properties and Preparation of Amino Acids
- 6In DNA, the consecutive deoxynucleotides are connected via2014Nucleic Acids
- 7Ribose and 2 -deoxyribose can be differentiated by2013Carbohydrates
- 8The correct structure of the dipeptide gly-ala is2013Properties and Preparation of Amino Acids
- 9An electric current is passed through an aqueous solution of a mixture of alanine (isoelectric point 6.0) glutamic acid (3.2) and arginine (2011Properties and Preparation of Amino Acids
- 10Which one is not a constituent of nucleic acid?2011Properties and Preparation of Amino Acids
- 11In aqueous solution glucose remains as2011Carbohydrates
- 12Vitamin is2010Vitamins
- 13Which of the following contributes to the double helical structure of DNA2009Nucleic Acids
Frequently Asked Questions
1.How many questions are available for Biomolecules?
This chapter includes 13 questions compiled from WBJEE papers spanning 2009 to 2026.
2.Are these questions only from WBJEE, or from other exams too?
These are WBJEE questions specifically for the Biomolecules chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.
3.Is Biomolecules an important chapter for WBJEE Chemistry?
Biomolecules has appeared in 8 of the 18 years of WBJEE papers covered here, with 13 questions across 8 papers - about 2 per paper it appears in.
4.What is the difficulty level of Biomolecules questions in WBJEE?
Of the 13 questions analysed for this chapter, 46% are easy, 38% moderate and 15% tough. 2011 had the most, with 3 questions.
5.Which topics in Biomolecules should I focus on?
These topics have carried the most weightage in Biomolecules:
- Nucleic Acids - 4 questions (31%)
- Properties and Preparation of Amino Acids - 4 questions (31%)
- Carbohydrates - 3 questions (23%)
- Properties and Preparation of Amino Acids has produced the most tough questions (1).
6.Is Biomolecules's weightage in WBJEE going up or down?
Across all 8 papers analysed, Biomolecules has averaged about 1.6 questions per paper. In the last three years (2024–2026), that average has fallen, at about 0.7 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.