FreeCSCA admission exam · Mathematics & Physics
Practice for the CSCA exam.Every wrong answer, explained.
880 original questions written to the real blueprint, full timed mocks, and — when you miss one — the exact mistake behind it, back on a schedule until you stop making it. Built by a student sitting the exam too.
- questions a paper
- 48questions a paper
- minutes
- 60minutes
- subjects, maths and physics
- 2subjects, maths and physics
The one-minute film
The whole idea in sixty seconds.
Try one
A question, before you sign up for anything.
Three real items from the bank, one per difficulty band. What you see after answering — the named mistake, the path that produces it, the worked solution — is what the app shows on every question.
Pick an answer — or press A–D
What happens to a wrong answer
Four characters. The whole app is the loop between them.
Wrongcuò
You pick B. The sheet marks it — and the answer you chose is kept, not thrown away.
Explainedjiě
The mistake gets its name — No flip on negative multiply — and the exact working that turns the question into your B.
Againfù
It comes back as a different question, on a spaced schedule: soon at first, then further apart.
Throughtōng
Beat it on three different questions and it is retired. A seal goes into your book.
The exam
What you're sitting, drawn to scale.
- 48
questions
single answer, multiple choice
- 60
minutes
about 75 seconds each
- 100
points
no penalty stated for guessing
- 4
options
exactly one correct
Mathematics
48 questionsTarget difficulty per paper: 19 easy · 15 medium · 14 complex — the official 40 / 30 / 30 split.
Physics
48 questionsSame 48 / 60 / 100 shell. No calculator, and every constant you need is printed in the question.
From the official syllabus and guidebook, cross-checked against real practice papers.
What's inside
Every item verified. Every miss named.
880
published questions
320 maths · 560 physics
493
named mistakes
each with the path that produces it
744
re-derived by a maths engine
key and every wrong option
- Question bank
- 880 published questions — 320 Mathematics, 560 Physics. All original, written to the blueprint's module weights and difficulty cells.
- Named mistakes
- 493 of them, 181 in Maths and 312 in Physics. Every wrong option comes with the short derivation that produces that exact wrong value, and most are tied to one of these.
- Verification
- 744 of the 880 have had their answer key and every distractor re-derived by a symbolic-maths engine: a wrong option has to be precisely what its mistake produces, or the item is discarded rather than patched.
- Review
- A mistake you make comes back as fresh questions on a spaced schedule (FSRS). It is retired only once you have beaten it on three distinct questions.
- Mocks & drills
- Full 48-question, 60-minute papers with a score estimate and a per-module breakdown; 12-question mini mocks; timed speed drills; focus packs built from your weakest modules.
- Reference
- Concept notes for every topic, a formula and exam-day sheet, and a printable notebook of your own mistakes.
Why it exists
A student project, not a company.
I'm preparing for the CSCA myself. What I could find was either paid, or free and calibrated wrong — question banks much harder than the real exam, which mostly taught me to doubt my own preparation.
So I built the thing I wanted: questions written to the real blueprint, an answer key a machine has checked, and every mistake explained by why it happened rather than just marked red.
It's free because it's a side project, not a business. Letting one more person use it costs me close to nothing, and there's nothing to upsell. If you're sitting the CSCA, it's yours.
Start
Keep your mistakes.
Sign in with a code sent to your email and your misses are remembered — they keep coming back until they stop happening.