CBSE Class 10 Science Answer Key 2026 - Solved Key by Subject Experts, Question Paper PDF, Exam Analysis

The Central Board of Secondary Education is all set to conduct the Class 10 Science exam on February 25, 2026. The exam will take place between 10:30 AM and 1:30 PM. The unofficial CBSE Class 10 Science Answer Key 2026 will be updated here shortly after the exam is concluded at 1:30 PM. Knowing the CBSE 10th Science Answer Key 2026 will enable you to understand your probable scores. You can easily match your answers with the answer key provided here. You will require at least 33% marks in each subject to pass, combining theory and internal/practical assessments as per the CBSE Class 10 Passing Marks 2026 . Continue reading the article to know the CBSE Class 10 Science Answer Key 2026.

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CBSE Class 10 Science Unofficial Answer Key 2026

The CBSE Class 10 Science exam comprises a theory paper of 80 marks and an internal assessment of 20 marks. The theory paper consists of 5 sections, from A to E, including objective, assertion-reason, short/long answer, and case-based questions. The paper generally focuses on NCERT-based content, with significant weightage on biology and application-based questions. Here we will provide the CBSE Class 10 Science Unofficial Answer Key 2026 for all sets (Set 1, 2, 3). You will find the answer key for the objective questions, i.e., Section A, from questions 1 to 20 only. The table below will be updated once the exam is concluded:

Section A - Multiple Choice Questions

Question No.	Question (Set 1)	Answer
1	TBU	TBU
2	TBU	TBU
3	TBU	TBU
4	TBU	TBU
5	TBU	TBU
6	TBU	TBU
7	TBU	TBU
8	TBU	TBU
9	TBU	TBU
10	TBU	TBU
11	TBU	TBU
12	TBU	TBU
13	TBU	TBU
14	TBU	TBU
15	TBU	TBU
16	TBU	TBU
17	TBU	TBU
18	TBU	TBU
19	TBU	TBU
20	TBU	TBU

Section A - Multiple Choice Questions

Question No.	Question (Set 2)	Answer
1	TBU	TBU
2	TBU	TBU
3	TBU	TBU
4	TBU	TBU
5	TBU	TBU
6	TBU	TBU
7	TBU	TBU
8	TBU	TBU
9	TBU	TBU
10	TBU	TBU
11	TBU	TBU
12	TBU	TBU
13	TBU	TBU
14	TBU	TBU
15	TBU	TBU
16	TBU	TBU
17	TBU	TBU
18	TBU	TBU
19	TBU	TBU
20	TBU	TBU

Section A - Multiple Choice Questions

Question No.	Question (Set 3)	Answer
1	TBU	TBU
2	TBU	TBU
3	TBU	TBU
4	TBU	TBU
5	TBU	TBU
6	TBU	TBU
7	TBU	TBU
8	TBU	TBU
9	TBU	TBU
10	TBU	TBU
11	TBU	TBU
12	TBU	TBU
13	TBU	TBU
14	TBU	TBU
15	TBU	TBU
16	TBU	TBU
17	TBU	TBU
18	TBU	TBU
19	TBU	TBU
20	TBU	TBU

CBSE Class 10 Science Passing Marks 2026

CBSE Class 10 students are required to acquire a minimum of 33% aggregate marks out of 100 in Science . This applies to both theory and internal assessment. Out of 80 in theory paper, they need at least 26 marks, and in 20-mark internal assessment, a minimum of 7 marks are required. CBSE Class 10 Science is a compulsory subject along with English, Social Science, Math and Second Language. Students have to pass all subjects, including the best five for aggregate computation.

CBSE Class 10 Grading System 2026

CBSE uses a 9-point relative grading scale for Class 10 exam 2026 board exams. CBSE will be focusing on percentile ranks among passed students rather than absolute marks only. Grades range from A1 (top performers) to E (essential repeat), with separate application to theory and internal assessments. However, for subjects of internal examination in Class 10, the assessment will be made on a five point scale, that is, A,B,C,D & E. The grades will be derived from scores in case of subjects of external examination. In case of subjects of internal assessment, they will be awarded by the schools.

Section A of the CBSE 10th Science question paper contains 20 multiple-choice questions, each carrying 1 mark. The question paper comprises a total of 39 questions, where internal choices will be available for a few sections. You can also check CBSE 10th Result 2026 here.