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CBSE Class 10th Science Answer Key 2026 (All Sets PDF)
On February 25, 2026, the CBSE Class 10th Science exam was conducted. The CBSE 10th std Science exam took place from 10:30 am to 1:30 pm across designated exam centres. Several renowned online educational portals, coaching institutes, and subject experts have prepared and published the unofficial CBSE 10th Science answer key PDF 2026 along with a detailed paper analysis.
Download: CBSE 10th Science Answer Key 2026 PDF (All Sets)
This Story also Contains
- CBSE Class 10 Science Exam Answers and Solutions 2026 PDF
- How to Use CBSE 10th Science Answer Key 2026 to Calculate Scores?
- What are the Passing Marks for the CBSE 10th Science Exam?
- CBSE Class 10 Science Question Paper Format
Students can use the unofficial CBSE Class 10 Science exam answer key 2026 to verify their answers, calculate probable marks, and analyse their exam performance. Since the CBSE board does not release any official answer key for Class 10 Science, students will have to rely on unofficial solved papers. The actual marks will be confirmed only after the CBSE Class 10 results are declared. Read further to get direct download links to the CBSE Class 10 Science exam answer key.
CBSE Class 10 Science Exam Answers and Solutions 2026 PDF
Students can download the CBSE 10th Science exam answer key 2026 from the following table. The links will be activated shortly.
Particulars | Download Link |
|---|---|
CBSE 10th Science Answer Key 2026 Set 1 PDF | Available here |
CBSE 10th Science Answer Key 2026 Set 2 PDF | Available here |
CBSE 10th Science Answer Key 2026 Set 3 PDF | Available here |
Also, Check: CBSE 10th Science Question Paper Analysis 2026
How to Use CBSE 10th Science Answer Key 2026 to Calculate Scores?
Students can calculate their probable marks using the CBSE Class 10 Science answer key PDF 2026 by following these steps.
First, compare your answers with the solutions given in the unofficial Science answer key PDF.
Next, count the number of correct answers according to the CBSE 10th Science marking scheme.
Then, add marks for each correct answer. Finally, calculate the total marks to get an estimated score and wait for the official CBSE Class 10 results for the final confirmation.
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What are the Passing Marks for the CBSE 10th Science Exam?
To pass the CBSE Class 10 Science board exam 2026, students need to score at least 33% marks in total. It is important to note that students must pass both the theory exam and the practicals/internal assessment separately to be declared successful.
In the theory paper, students must score a minimum of 27 marks out of 80.
In the internal assessment component, which includes practical work, projects, and periodic tests, students must secure at least 06 marks out of 20.
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Check NowAlso, Check: CBSE Passing Marks (All Subjects)
CBSE Class 10 Science Question Paper Format
The CBSE Class 10 Science question paper 2026 will be structured to assess students’ understanding of Biology, Chemistry, and Physics concepts. The paper will consist of 39 questions divided into three sections, covering all major topics from the prescribed CBSE 10th syllabus.
All questions in the paper will be compulsory. However, internal choices will be provided in some questions, giving students the option to attempt either of the given alternatives. Students are required to attempt only one question from each internal choice pair.
The CBSE Class 10 Science theory paper will be conducted for 80 marks, while the remaining 20 marks will be allocated for internal assessment, making the total maximum marks 100.
CBSE 10th Science Unit-Wise Marks Allocation
Units | Unit Name | Marks |
|---|---|---|
I | Chemical Substances-Nature and Behaviour: Chemical reactions, Acids, bases and salts, Metals and nonmetals, Carbon compounds | 25 |
II | World of Living: Life processes, Control and coordination in animals and plants, Reproduction, Heredity and Evolution | 25 |
III | Natural Phenomena: Reflection of light by curved surfaces, Refraction of light by spherical lens, Functioning of a lens in the human eye, Refraction of light through a prism, etc. | 12 |
IV | Effects of Current: Electric current, potential difference and electric current, Ohm’s law, Magnetic effects of current, Alternating current, Domestic electric circuits | 13 |
V | Natural Resources: Our Environment | 05 |
Total | 80 | |
Internal Assessment | 20 | |
Grand Total | 100 | |
Frequently Asked Questions (FAQs)
Q: When will the CBSE Class 10 Science answer key 2026 be released?
A:
The unofficial CBSE 10th Science answer key 2026 has been released on February 25, 2026, after the exam concluded. Students can download the PDF from online educational portals or from the article above.
Q: Will CBSE release an official Science answer key for Class 10?
A:
The Central Board of Secondary Education does not release official answer keys for the Class 10 Science exam. Only unofficial solved papers prepared by experts are available.
Q: Where can I download the CBSE 10th Science solved paper PDF 2026?
A:
Students can download the CBSE 10th Science solved question paper and answer key PDF from various online education portals, and YouTube channels.
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Questions related to CBSE Class 10th
On Question asked by student community
Have a question related to CBSE Class 10th ?
Hello Yuva,
Download CBSE Class 10 previous year papers from the link below to prepare effectively for all subjects.
https://school.careers360.com/boards/cbse/cbse-previous-year-question-papers-class-10
Hi Rudra,
Download the subject-wise CBSE 2nd exam paper from the link given in the article below.
Link:
https://school.careers360.com/boards/cbse/cbse-10th-second-exam-question-paper-2026
Hello,
Download the complete CBSE 10th maths question paper PDF of both maths basic and standard with complete solution by going through the article given below.
Link:
https://school.careers360.com/boards/cbse/cbse-class-10-maths-question-paper-2026
Hello,
Download the CBSE 10th question paper subject-wise from the link given below.
Link:
https://school.careers360.com/boards/cbse/cbse-class-10-question-paper-2026
https://school.careers360.com/boards/cbse/cbse-10th-second-exam-question-paper-2026
Hello Yash,
Download the Class 10 competency-based Questions from the article given below
Link:
https://school.careers360.com/boards/cbse/cbse-class-10-science-competency-based-questions-2026
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