Class 12 · Biology · CBSE Board
Class 12 Biology — Previous Year Questions
1,011 questions from 9 years of Class 12 exams (2016–2025) — organised into 13 chapters for focused practice.
Chapter-wise PYQs
Sexual Reproduction in Flowering Plants
100 questions
Human Reproduction
79 questions
Reproductive Health
34 questions
Principles of Inheritance and Variation
92 questions
Molecular Basis of Inheritance
96 questions
Evolution
78 questions
Human Health and Diseases
100 questions
Microbes in Human Welfare
67 questions
Biotechnology – Principles and Processes
81 questions
Biotechnology and its Applications
69 questions
Organisms and Populations
63 questions
Ecosystem
54 questions
Biodiversity and its Conservation
54 questions
Year-wise Papers
2025
192 questions across 6 sets
2024
124 questions across 6 sets
2023
138 questions across 6 sets
2022
52 questions across 6 sets
2021
Board exams cancelled due to the COVID‑19 pandemic
2020
152 questions across 6 sets
2019
103 questions across 5 sets
2018
131 questions across 3 sets
2017
77 questions across 3 sets
2016
42 questions across 3 sets
About Class 12 Biology PYQs
These are the official questions asked in CBSE Class 12 Biology board examinations from 2016–2025. CBSE conducts each board exam in multiple question paper sets — students in different regions receive different sets of the same exam. Padhify’s question bank combines every set of every year and removes repeated questions, which is why recent years show 100+ unique questions while a single set contains roughly 30–35.
Practising chapter-wise PYQs is the highest-return preparation strategy for boards: examiners reuse concepts, question patterns and even exact phrasing year after year. Every question here appears with its year and marks, so you always know its weight in the real exam.