CBSE Class 12 Biology Question Bank 2026-27
Practise the full CBSE Class 12 Biology board paper, chapter by chapter, with 896 independently authored questions covering all 16 chapters and the complete 70-mark theory syllabus.
Every chapter follows the same structure: 21 MCQs with one diagram-based item, 5 Assertion-Reason, 12 Very Short Answer at 2 marks, 8 Short Answer at 3 marks, 2 Long Answer with OR alternatives at 5 marks, 3 Case-Based at 4 marks and 5 HOTS at 4 marks. Question numbering runs Q1 to Q56 continuously, and each chapter carries 116 marks of practice.
What’s inside:
896 questions across 16 chapters, 56 per chapter, authored for Future Topper
896 worked answers, including a full explanation of why each wrong MCQ option is wrong
80 HOTS questions, five per chapter, on CRISPR regulation, antibiotic resistance, checkpoint inhibitors, climate justice and designer babies
48 case studies, three per chapter, set in real contexts: an overdue period and an hCG test, five suspects and a DNA fingerprint, a dairy farmer switching to MOET, the algal bloom in Dal Lake, the Nile perch in Lake Victoria, the turmeric patent challenge
80 assertion-reason questions, with answers that judge A and R separately and state why R does or does not explain A
16 diagram-based questions, one per chapter, with original figures redrawn for this book
Key Concepts, Exam Tip and Board Tip boxes opening every chapter, naming what the board has actually asked and the mistakes examiners see most
Three rationalised chapters retained for extra practice, each carrying a notice that it will not appear in the Board Examination
Questions, marks and suggested time printed on every chapter page
Chapters covered: Reproduction in Organisms (not in current syllabus) · Sexual Reproduction in Flowering Plants · Human Reproduction · Reproductive Health · Principles of Inheritance and Variation · Molecular Basis of Inheritance · Evolution · Human Health and Disease · Strategies for Enhancement in Food Production (not in current syllabus) · Microbes in Human Welfare · Biotechnology: Principles and Processes · Biotechnology and Its Applications · Organisms and Populations · Ecosystem · Biodiversity and Conservation · Environmental Issues (not in current syllabus)
How to use it: Read the Key Concepts box before attempting a single question. Work the sections in order, because the one-mark questions set up the vocabulary the longer answers need. Write your answer out in full before opening the key, then read the explanation of the wrong options as well as the right one, since that is where the marks are. Leave HOTS to the end. Ninety minutes per chapter, one chapter a day, covers the book in just over a fortnight.
Closing: Ideal for Class 12 students targeting 90+ in the Biology board exam, and for NEET aspirants who want board-pattern practice on the same syllabus.
Independent educational practice material. Not affiliated with or endorsed by CBSE or any government body. The term CBSE is used only to indicate alignment with the Class 12 Biology curriculum.
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Reviews
80 assertion-reason questions across all chapters is excellent preparation. These questions are tricky in boards and having dedicated practice made a real difference.
Every chapter has a dedicated diagram-based MCQ with a Diagram Tip. Punnett squares, spermatogenesis stages, DNA replication all covered this way. Very helpful.
Lac operon, DNA replication, transcription and translation all covered through diagrams, MCQs, and HOTS questions. The most thorough treatment I have found.
Immunity, diseases, drugs and alcohol all covered across MCQs, case-based and HOTS questions. One of my weaker chapters and it became very strong after this.
GMOs, Bt crops, gene therapy and ethical concerns all covered through a range of question types. This chapter often gets surface-level treatment elsewhere.
Covering every chapter with 55 questions each is genuinely impressive. MCQs, assertion-reason, case-based, HOTS and long answers all in one place. Nothing left out.
Population interactions, growth models and ecological adaptations are covered through questions that push you to think analytically rather than just recall.
Two 5-mark long answers per chapter each with an OR alternative is exactly how CBSE Section D works. Practicing in this format built real exam familiarity.
Questions like what would happen if meiosis were replaced by mitosis are exactly the kind of application questions that board exams are increasingly including.
Chapters 5 through 7 covering genetics and evolution are the most important unit for boards. The coverage here across all 7 question types is exceptional.