Meet Zainora · O Level & IGCSE
Built by teachers.
Designed for students.
Digital topicals, past papers and study tools for your O Levels and IGCSEs, organised so you can find the right thing in seconds and practise by topic.
Founded by Huzaifa Hassan & Noor ·
Teachers at The Benchmark Academy
What are you looking for?
Topicals
Practice questions by topic, with mark schemes.
18 topicals liveBrowse topicals
Past papers
Find papers by subject, year and session.
1,858 papersFind past papers
Tools
Useful tools for studying and revision.
4 tools liveExplore tools
Resources
Everything for your subject on one page.
10 subjects readySee subjects
Start here
Choose your qualification.
Then your subject, then the topic you are revising. Every page tells you where you are and where to go next.
- IGCSE
- Chemistry
- Stoichiometry
- Digital topical
H&N
Who made this
Built by the people who teach you.
We are Huzaifa Hassan and Noor. We teach O Level and IGCSE at The Benchmark Academy, and we built Zainora because preparing for these exams should not mean digging through scattered files and confusing material.
We wanted one place where a student can find the right resource, practise by topic and walk into the exam prepared. So we made it.
Subjects
Explore subjects.
15 subjectsSubjects with a green mark have resources you can open today. The rest are on the roadmap and will switch on as they are ready.
Available
Chemistry
IGCSE 0620 · O Level 5070
Particles, bonding, moles, energetics, organic chemistry and the practical paper.
269 resourcesOpen
Available
Physics
IGCSE 0625 · O Level 5054
Motion, forces, thermal physics, waves, electricity, nuclear and space physics.
262 resourcesOpen
Available
Biology
IGCSE 0610 · O Level 5090
Cells, organisation, transport, respiration, inheritance and ecology.
479 resourcesOpen
Available
Mathematics
IGCSE 0580 · IGCSE 0607 · O Level 4024
Number, algebra, geometry, trigonometry, statistics and probability.
337 resourcesOpen
Available
Additional Mathematics
IGCSE 0606 · O Level 4037
Functions, calculus, vectors, series and the harder end of algebra.
10 resourcesOpen
Available
Computer Science
IGCSE 0478 · O Level 2210
Data representation, networks, hardware, algorithms, programming and databases.
154 resourcesOpen
Coming soon
Economics
IGCSE 0455 · O Level 2281
Markets, government intervention, macroeconomics and international trade.
no resources yetOpen
Coming soon
Accounting
IGCSE 0452 · O Level 7707
Double entry, financial statements, control accounts and interpretation.
no resources yetOpen
Digital topicals
Every past question on one topic, in one place.
Pick a qualification, a subject and a topic. You get the real Cambridge questions for that chapter, across every paper and every year, with the mark scheme beside each one.
- Topicals
- IGCSE
- Chemistry
- States of matter
- Open
0620/11/M/J/26
May/June 2026 · Paper 1 · Variant 1
0620/12/M/J/26
May/June 2026 · Paper 1 · Variant 2
0620/13/M/J/26
May/June 2026 · Paper 1 · Variant 3
0620/21/M/J/26
May/June 2026 · Paper 2 · Variant 1
Showing the latest Chemistry papers. Open the finder to filter by year, session and paper number.
Past papers
Find a paper in seconds, not minutes.
Every paper is labelled the way Cambridge prints it, so 0620/42/M/J/25 means what you think it means. Filter by year, session and paper, then open the question paper or the mark scheme.
1,858 papers · 10 subjects · 2015–2026
Study tools
Tools that do one job well.
4 live · 8 comingOnly tools that actually work are marked available. Everything else is labelled honestly until it ships.
StudyAvailable
Study timer
Focused sessions with short breaks. Runs in your browser, no account needed.
ReferencesAvailable
Periodic table
The Cambridge data-sheet Periodic Table, exactly as printed in the 0620 paper.
Virtual labsAvailable
Titration lab
Prepare a soluble salt by titration: assemble the apparatus, titrate, then crystallise.
Virtual labsAvailable
Salt preparation simulators
Soluble salts, insoluble salts, precipitation and crystallisation, step by step.
Why Zainora
Built around how students actually revise.
Organised by topic, not by year.
Revision works chapter by chapter. Zainora sorts every past question by syllabus topic, so you practise Stoichiometry until it clicks, not whatever a random year happened to ask.
Real questions, real mark schemes.
Nothing is invented. Every topical question is a Cambridge question with its mark scheme, and every past paper is the original PDF.
Free to use, no account needed.
Open a topical or a paper and start. Accounts will add saved items and progress later, but they will never be the price of entry.
Follow the people behind Zainora.
Study tips, resources, exam advice and what we are building next. Ask us things there; we read the messages.
[Turn over
Pick a subject. Open a topic. Start.
No sign-up, no paywall. The next question you practise is one click away.
Founded by Huzaifa Hassan & Noor ·
Teachers at The Benchmark Academy