The CBSE Class 10 Science Sample Question Paper for the 2026-27 board exam session is the single most reliable way to understand the exact question format, difficulty level, and mark distribution you will face — far more useful than any unofficial guess paper, because it is released directly by the board that sets your actual exam.
Where to Get the Official Sample Paper
CBSE publishes the official Sample Question Paper and Marking Scheme for every subject on its academic website, cbseacademic.nic.in, usually a few months before the board exams begin. We deliberately do not re-host or mirror the sample paper PDF on this page — always download it directly from the official CBSE portal so you get the exact, unaltered, current-year document along with its official marking scheme.
Exam Pattern You Will See
In recent years, CBSE Class 10 Science papers have followed a mixed format: multiple-choice questions (MCQs) worth 1 mark each, very short answer (VSA) questions, short answer (SA) questions, long answer (LA) questions, and case-study or source-based questions that test application rather than rote recall. Internal choice is usually offered in a portion of the questions. Because the exact split of marks across these sections can be revised from year to year, always confirm the current-year breakup from the official marking scheme published alongside the sample paper, rather than relying on last year’s pattern alone.
Units and Topics to Focus On
Science for Class 10 is organised into these broad units — use the sample paper to check how many questions come from each, since that tells you where your revision time is best spent:
- Chemical Reactions and Equations, Acids, Bases and Salts, Metals and Non-metals, Carbon and its Compounds, Periodic Classification of Elements (Chemistry)
- Life Processes, Control and Coordination, How do Organisms Reproduce?, Heredity (Biology)
- Light — Reflection and Refraction, The Human Eye and the Colourful World, Electricity, Magnetic Effects of Electric Current (Physics)
- Our Environment (applied/interdisciplinary unit)
How to Use This Sample Paper Effectively
Do not just read through the sample paper — attempt it under exam-like conditions (same time limit, no textbook open), then check your answers against the official marking scheme, not just the final answer. The marking scheme shows exactly how CBSE examiners award partial marks for method and steps, which is often where students lose marks even when their final answer is correct. After one timed attempt, redo only the questions you got wrong, then move to the previous year’s official sample paper for a second round of practice.
Common Mistakes in Science Sample Papers
A large share of marks lost in Class 10 Science come from diagram-based questions — ray diagrams in Light, circuit diagrams in Electricity, or labelled biological diagrams — where students know the concept but draw an unlabelled or inaccurate figure. Practising these specific diagrams from the sample paper and marking scheme, not just reading about them, closes this gap quickly. Numerical problems in Electricity and chemical equation balancing in Chemistry are the other two areas where timed sample-paper practice pays off most.
Related Resources on This Site
See our CBSE Sample Papers hub for the official download links and other subjects. For the complete NCERT textbook and chapter-wise PDFs, see our Class 10 Science book page. For worked chapter solutions and revision notes on other subjects, browse our NCERT Solutions section.
Frequently Asked Questions
1. Is Class 10 Science one paper covering Physics, Chemistry and Biology together?
Yes, CBSE Class 10 Science is a single combined paper drawing questions from all three streams — Physics, Chemistry, and Biology — based on the NCERT Science textbook.
2. Where do I get the official sample paper and marking scheme?
Directly from CBSE's own academic portal, cbseacademic.nic.in, which publishes both the sample question paper and the detailed marking scheme for the current academic year.
3. Are numerical problems common in the Science sample paper?
Yes, particularly from the Electricity and Light chapters in Physics — these numerical questions are a recurring feature and are worth dedicated practice.
4. How should I revise diagrams for the Science exam?
Practise drawing and labelling the standard diagrams (ray diagrams, circuit diagrams, the human eye, plant/animal structures) by hand multiple times rather than only reading them, since exam marks depend on correct labelling.
5. Does the sample paper include case-study or assertion-reason questions?
Yes, recent CBSE Science sample papers have included case-study-based and assertion-reason questions alongside standard MCQ, short-answer, and long-answer formats — check the current year's sample paper for the exact split.