Sample Papers & Previous Year Questions
A live 3-hour, 80-mark timer, zero downloads, zero distractions — then a chapter-wise report on exactly where your marks went.
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The Paper Library
After You Attempt
Finishing a paper is only half the job. BoardOS walks you through marking your own answers against the official CBSE marking scheme — step-wise for long answers, option-matched for MCQs — question by question.
Key Features
Multiple sets across multiple years, organised by subject and year so you always know exactly what you're attempting.
Every attempt runs on the actual CBSE Class 10 timing — 3 hours, 80 marks — with a live pace guide, not a vague "practice at your own pace."
No download, no print, no browser toolbar clutter. Just the paper, full screen, exactly as it should be during a timed attempt.
Self-mark against the official scheme and see precisely which chapter is costing you the most marks — not a vague percentage score.
Every question you lose marks on is logged automatically with its chapter, so nothing you got wrong quietly disappears.
Spot a weak chapter in your report and jump straight into practising it inside BoardOS — the loop closes itself.
Getting Started
Choose from Mathematics or Science, filter by year, and pick a Sample Paper or Previous Year set.
The 3-hour, 80-mark timer starts the moment you open the paper. Flag questions and add notes as you go — they're saved on your device.
Go through your own answers against the official marking scheme and get a chapter-wise breakdown of exactly where you lost marks.
Why BoardOS
| Feature | BoardOS | A PDF You Found Online |
|---|---|---|
| Real 3-hour, 80-mark timed attempt | ✓ Yes | ✗ No |
| Pace guide while you attempt | ✓ Yes | ✗ No |
| Official marking scheme to self-check against | ✓ Built in | ✗ Separate search |
| Chapter-wise mark loss report | ✓ Automatic | ✗ No |
| Mistakes saved for later revision | ✓ Mistake Bank | ✗ No |
| Straight into practising your weak chapter | ✓ One tap | ✗ No |
FAQ
Attempt a real CBSE Class 10 Sample Paper under exam conditions and see your chapter-wise report in minutes.