Explore: All CBSE Class 12 chapters · CBSE Class 12 Biology PYQs · CBSE Class 12 hub · Syllabus & pattern · Class 12 2026
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Evolution PYQs (previous year questions) for CBSE Class 12: Evolution (Biology) had 20 questions across the 50 official CBSE Class 12 papers we tagged (2016–2026), and appeared in 9 of them. Asked in 9 of 10 years. The concepts asked in the most papers: Human Evolution, Origin of Life, Homology and Analogy.
Year-wise question count
Asked in 9 of 10 years.
Most-asked concepts
Sorted by the number of papers a concept appeared in.
| Concept | Questions | Papers | Years |
|---|---|---|---|
| Human Evolution | 6 | 6 | 2025, 2023, 2019, 2018, 2017, 2016 |
| Homology and Analogy | 3 | 3 | 2020, 2018, 2016 |
| Origin of Life | 3 | 3 | 2024, 2019, 2017 |
| Hardy-Weinberg Principle | 2 | 2 | 2026, 2018 |
| Natural Selection | 2 | 2 | 2026, 2023 |
| Theories of Evolution | 2 | 2 | 2026, 2024 |
| Convergent and Divergent Evolution | 1 | 1 | 2025 |
| Gene Flow and Genetic Drift | 1 | 1 | 2019 |
How to practise Evolution PYQs
- Start with the concepts at the top of the table. They have come back the most.
- Solve one year’s Evolution 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, with a link to the official PDF.
CBSE Class 122026
- Q.10 (Biology (57/1/1)) · MCQ · Theories of Evolution: Proposer of the use and disuse theory PDF
- Q.13 (Biology (57/1/1)) · Assertion-Reason · Natural Selection: Rise of melanised moths after the Industrial Revolution PDF
- Q.24 (Biology (57/1/1)) · Short answer · Hardy-Weinberg Principle: Derive the Hardy-Weinberg expression; factors that disturb it PDF
CBSE Class 122025
CBSE Class 122024
CBSE Class 122023
CBSE Class 122020
- Q.7 (Biology (57/1/1)) · Short answer · Homology and Analogy: Type of evolution shown by wings of birds and butterflies PDF
CBSE Class 122019
- Q.2 (Biology (57/1/1)) · Very short answer · Origin of Life: Two main outcomes of Pasteur's experiments on origin of life PDF
- Q.7 (Biology (57/1/1)) · Short answer · Gene Flow and Genetic Drift: How gene flow or genetic drift affects a population PDF
- Q.17 (Biology (57/1/1)) · Short answer · Human Evolution: Homo erectus vs Homo habilis; order geological periods PDF
CBSE Class 122018
- Q.4 (Biology (57/1)) · Very short answer · Human Evolution: Name an ape-like primate of 15 mya and an East African primate of 2 mya PDF
- Q.7 (Biology (57/1)) · Short answer · Hardy-Weinberg Principle: Algebraic statement of Hardy-Weinberg allele frequency constancy PDF
- Q.20 (Biology (57/1)) · Short answer · Homology and Analogy: Analogous vs homologous structures; pick analogous pairs from a list PDF
CBSE Class 122017
CBSE Class 122016
Other Biology chapters
- Reproduction in Organisms PYQs
- Sexual Reproduction in Flowering Plants PYQs
- Human Reproduction PYQs
- Reproductive Health PYQs
- Principles of Inheritance and Variation PYQs
- Molecular Basis of Inheritance PYQs
- Human Health and Disease PYQs
- Strategies for Enhancement in Food Production PYQs
- Microbes in Human Welfare PYQs
- Biotechnology: Principles and Processes PYQs
- Biotechnology and its Applications PYQs
- Organisms and Populations PYQs
- Ecosystem PYQs
- Biodiversity and Conservation PYQs
- Environmental Issues PYQs
FAQ
How many Evolution questions come in CBSE Class 12?
In the official papers we tagged: 3 in 2026, 2 in 2025, 2 in 2024, 2 in 2023, 1 in 2020, 3 in 2019, 3 in 2018, 2 in 2017 and 2 in 2016. Not asked in the other year. That is 20 questions in all, about 7% of Biology.
Which Evolution topics repeat in CBSE Class 12?
Asked in the most papers: Human Evolution, Origin of Life, Homology and Analogy. The concept table lists every one with its count.
Are these official CBSE Class 12 questions?
Yes. Every question is from an official CBSE Class 12 paper hosted on our year pages. The one-line summaries are ours; open the PDF linked beside each question for the full text.