The Class 10 Science Sample Paper 2025-26 released by the Central Board of Secondary Education (CBSE) is an important resource for students preparing for the Class 10 Science Board Examination. The official CBSE sample paper gives students a clear idea of the question paper pattern, types of questions, marks distribution and internal choices for the examination.
In this post, we provide the Class 10 Science Sample Paper 2025-26 Full Solution with step-by-step explanations to help students understand how to approach different types of questions.
The sample paper is the official CBSE Class 10 Science Sample Question Paper for the 2025-26 session (Science, Code No. 086). CBSE has also released the corresponding official marking scheme.
Class 10 Science Sample Paper 2025-26 – Official CBSE Paper
The official CBSE Class 10 Science Sample Question Paper for 2025-26 carries 80 marks and has a 3-hour time limit. The paper contains 39 questions divided into three sections:
- Section A – Biology
- Section B – Chemistry
- Section C – Physics
All questions are compulsory, although internal choices are provided in some questions.
You can access the official CBSE sample question paper here:
CBSE Class 10 Science Sample Question Paper 2025-26 – Official PDF
You can also refer to the official CBSE marking scheme:
CBSE Class 10 Science Marking Scheme 2025-26
Class 10 Science Sample Paper 2025-26 Full Solution
Before looking at the solutions, students should try to solve the sample paper themselves under examination conditions. Set a timer for 3 hours and attempt the complete paper without referring to your textbook or notes.
After completing the paper, use the solutions below to check your answers and understand the correct approach.
Section A – Biology
The Biology section tests important concepts from topics such as Life Processes, Control and Coordination, How Do Organisms Reproduce?, Heredity and Evolution, and Our Environment.
Question 1
The first question is an objective-type question based on the mode of nutrition of organisms.
Answer: C. Cuscuta, ticks, lice, leeches and tapeworm
All these organisms are parasites and obtain nutrition from their hosts. The official CBSE marking scheme gives option C as the correct answer.
Question 2
The question asks about the products formed when glucose breaks down in muscle cells in the absence of sufficient oxygen.
Answer: B. Lactic acid + Energy
During anaerobic respiration in muscle cells, glucose is converted into lactic acid with the release of energy.
Question 3
This question tests the functions of different parts of the brain.
Answer: D. Blood pressure: Medulla in hindbrain
The medulla controls several involuntary functions, including regulation of blood pressure.
Question 4
The question is related to blood glucose regulation.
Answer: D. Insulin from pancreas
Insulin is secreted by the pancreas and helps regulate blood glucose levels.
Question 5
The question is based on inheritance and the cross between black- and white-furred rabbits.
Answer: A. BB × bb
If all offspring have black fur, the black-furred parent can be homozygous dominant BB, while the white-furred parent is bb. The official marking scheme gives option A.
Biology Section – Detailed Video Solutions
For the remaining Biology questions, students can watch the complete step-by-step solutions below.
While watching the solutions, try to understand why an answer is correct, rather than simply memorising the answer.
Section B – Chemistry
The Chemistry section covers important Class 10 Science concepts including Chemical Reactions and Equations, Acids Bases and Salts, Metals and Non-metals, Carbon Compounds and Periodic Classification of Elements.
Students should pay particular attention to:
- Chemical equations
- Types of chemical reactions
- Acids and bases
- pH
- Salts and their uses
- Properties of metals and non-metals
- Carbon compounds
- Homologous series
- Periodic trends
Each question should be attempted according to the marks allotted. For numerical and reaction-based questions, students should show the required steps clearly.
Section C – Physics
The Physics section tests important concepts from chapters such as:
- Light – Reflection and Refraction
- Human Eye and the Colourful World
- Electricity
- Magnetic Effects of Electric Current
- Sources of Energy
For numerical questions, students should write:
Given → Formula → Substitution → Calculation → Final Answer with Unit
This presentation makes the solution easier to understand and helps avoid calculation and unit errors.
Why Should You Solve the CBSE Class 10 Science Sample Paper 2025-26?
The official sample paper is useful because it allows students to become familiar with the current examination format before appearing for the Board Examination.
Solving the paper can help you:
- Understand the question paper pattern.
- Practise different types of questions.
- Identify important concepts.
- Improve time management.
- Practise competency-based questions.
- Check your preparation level.
- Understand how answers should be presented.
- Identify topics that need more revision.
CBSE has also provided other assessment resources, including question banks and competency-based assessment material for Class 10 Science
How to Attempt the Class 10 Science Sample Paper
Before checking the solutions, follow these steps:
Step 1: Attempt the complete paper
Try to solve the paper in one sitting within the prescribed 3-hour time limit.
Step 2: Do not use your textbook
Treat the sample paper like an actual board examination.
Step 3: Check your answers
After completing the paper, compare your answers with the solution.
Step 4: Analyse your mistakes
Don’t just count how many questions you got wrong. Find out why you made the mistake.
Step 5: Revise weak chapters
Make a list of chapters and concepts where you lost marks and revise them again.
Class 10 Science Sample Paper 2025-26 – Official Marking Scheme
CBSE has released an official marking scheme along with the Science Sample Question Paper. The marking scheme provides the suggested answers and value points used for evaluating the sample paper.
Students should use the marking scheme to understand how marks may be awarded for different parts of an answer.
Important: The solutions provided on this page are intended to explain the questions in a student-friendly, step-by-step manner. For the official assessment guidance, always refer to the CBSE marking scheme.
View the Official CBSE Science Marking Scheme 2025-26
Watch the Complete Class 10 Science Sample Paper 2025-26 Solution
We have prepared detailed video solutions to help students understand the questions step by step.
You can watch the complete solution below:
You can also watch the individual solutions for Biology, Chemistry and Physics if you want to revise one section at a time.
Tips for Class 10 Science Board Exam Preparation
1. Practise NCERT thoroughly
Most Class 10 Science preparation should begin with a strong understanding of the NCERT textbook.
2. Solve sample papers
After completing your chapter-wise preparation, solve sample papers under timed conditions.
3. Practise diagrams
Make sure you practise important diagrams from Biology and Physics.
4. Learn important chemical reactions
Revise important chemical equations and learn how to balance them correctly.
5. Practise numericals
For Electricity and Light, practise numerical problems regularly.
6. Focus on application-based questions
Don’t restrict your preparation to direct textbook questions. Practise questions that require you to apply concepts to new situations.
Frequently Asked Questions
Is this the official CBSE Class 10 Science Sample Paper 2025-26?
Yes. The paper discussed here is the official CBSE Class 10 Science Sample Question Paper for the 2025-26 academic session, Science Code 086.
How many marks is the Class 10 Science Sample Paper 2025-26?
The official sample paper carries 80 marks and has a time limit of 3 hours.
How many questions are there in the CBSE Class 10 Science Sample Paper 2025-26?
The official paper contains 39 questions, divided into Biology, Chemistry and Physics sections.
Where can I download the official CBSE Class 10 Science Sample Paper 2025-26?
You can download it directly from the official CBSE Academic website.
Download Official CBSE Class 10 Science Sample Paper 2025-26
Is the CBSE marking scheme available for the Science sample paper?
Yes. CBSE has released the official Science Marking Scheme 2025-26 along with the sample question paper.
Is the Class 10 Science Sample Paper useful for board exam preparation?
Yes. It is particularly useful for understanding the examination format, practising questions and assessing your preparation before the board examination.
Should I solve the sample paper before watching the solutions?
Yes. It is better to attempt the complete paper yourself first and then watch the solutions. This will help you identify your actual strengths and weaknesses.
Final Words
The Class 10 Science Sample Paper 2025-26 Full Solution is designed to help students prepare systematically for the CBSE Board Examination. Try to solve the official paper independently first, analyse your mistakes, and then use the detailed solutions and videos to improve your preparation.
Keep revising NCERT concepts, important questions, diagrams, chemical reactions and numerical problems, and practise multiple sample papers before the examination.
All the best for your Class 10 Science Board Exam preparation!
Class 10 Maths Most Important Questions on Real Numbers
Class 10 Maths Most Important Questions Chapter 1 Real Numbers
Class 10 Maths Basic Sample Paper Solution:
Practise with the Complete CBSE Basic Sample Paper Solution
Class 10 Maths NCERT Solutions CBSE 2026-27 Update
Continue your Class 10 Maths preparation with these useful resources from Future Study Point:
Class 10 Maths Chapter 1 – Real Numbers: Complete NCERT Exercise-Wise Video Solutions
Class 10 Maths Chapter 2 – Polynomials: Complete NCERT Solutions for Polynomials
Class 10 Maths Chapter 3 – Pair of Linear Equations in Two Variables: Complete NCERT Solutions
Class 10 Maths Chapter 4 Quadratic Equations: – Quadratic Equations complete NCERT video solutions
Class 10 Maths Chapter 5 Arithmetic Progression: Arithmetic Progression: complete video solution
👉 Explore these resources to strengthen your concepts, revise important topics, and prepare effectively for the CBSE Class 10 Maths Board Examination 2026–27.
