The CBSE Class 10 Science 2018 board paper (Q.P. code 31/1) is a 3-hour, 80-mark paper with 27 questions on 12 printed pages. Download the official question paper and CBSE’s marking scheme above.
Paper at a glance
| Subject | Science |
| Q.P. code | 31/1 (Set 1) |
| Time allowed | 3 hours |
| Maximum marks | 80 |
| Number of questions | 27 |
| Printed pages | 12 |
| Marking scheme | Official CBSE marking scheme, hosted on this page |
CBSE Class 10 Science across years
Compared with 2017: maximum marks 90 → 80, same time allowed (3 hours), questions 36 → 27. Each row links that year’s paper and marking scheme. There was no board exam in 2021, and 2022 was the shorter Term 2 paper.
| Year | Time | Max marks | Questions | Q.P. code |
|---|---|---|---|---|
| 2026 | 3 hours | 80 | 39 | 31/1/1 |
| 2025 | 3 hours | 80 | 39 | 31/1/1 |
| 2024 | 3 hours | 80 | 39 | 31/1/1 |
| 2023 | 3 hours | 80 | 39 | 31/1/1 |
| 2022 | 2 hours | 40 | 15 | 31/1/1 |
| 2020 | 3 hours | — | 30 | 31/1/1 |
| 2019 | 3 hours | 80 | 27 | 31/1/1 |
| 2018 | 3 hours | 80 | 27 | 31/1 |
| 2017 | 3 hours | 90 | 36 | 31/1 |
| 2016 | 3 hours | 90 | 36 | 31/1 |
Marking your attempt
- Physics, Chemistry and Biology questions are mixed; tag every lost mark by discipline before you revise.
- The scheme lists the keywords and labelled diagrams that earn marks. Copy the wording you missed.
- Balanced equations, units and labels are marked separately; see how often you drop them.
- Sit the paper in 3 hours without breaks, then mark it with the scheme the same day.
Other CBSE Class 10 2018 subjects
- CBSE Class 10 Mathematics 2018
- CBSE Class 10 Social Science 2018
- CBSE Class 10 English Language & Literature 2018
- CBSE Class 10 Hindi Course A 2018
- CBSE Class 10 Hindi Course B 2018
- All CBSE Class 10 2018 papers
FAQ
How many questions are in the CBSE Class 10 Science 2018 question paper?
The CBSE Class 10 Science 2018 paper (code 31/1) has 27 questions for 80 marks in 3 hours.
Is there an official marking scheme for CBSE Class 10 Science 2018?
Yes. CBSE published a marking scheme for this paper, and it is hosted on this page next to the question paper.
Which set of the CBSE Class 10 Science 2018 paper is this?
Set 1, Q.P. code 31/1. Other sets use the same pattern with different questions.
Where can I find CBSE Class 10 Science papers from other years?
The year-by-year table on this page links every CBSE Class 10 Science paper hosted on this site, 2016 to 2026.