Exams
Build question sets by pasting text or uploading a PDF, then take them as timed tests.
New question set
Format: number, question, options A–D on new lines, then "Answer: B". Explanation line is optional.
Your question sets
Notebook
Your study notes. Import text from a PDF straight into a note.
Solve
Ask a biology question, optionally with a PDF. Uses your own Anthropic API key, which stays in this browser only.
No key? Solve stays off; everything else in Chalk works without it. Get a key at console.anthropic.com.
Notes Scout
Find MSc-level biology notes and PDFs for Indian exams. Pick the exam, unit and topic to get ready-made searches aimed at free, legitimate sources.
PDF search pack
Links open in a new tab. Prefer university (.ac.in), e-PG Pathshala, NPTEL and publisher sources; skip sites that host pirated textbooks.
My shelf
Save the good PDFs you find.
Trusted free libraries
Ledger
How your exam practice is going.
Average score by subject
Recent attempts
| Date | Set | Score |
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Backup
Chalk keeps everything in this browser. Download a backup file regularly so nothing is lost if you change computer or clear your browser.
Save and restore
Older saved data
Data saved by the old Duster app in this browser. Download it so it's safe; send the file to Claude to bring it into Chalk.