Section III · sciences
Stimulus-grouped MCQs. 40% chem, 40% bio, 20% physics, matching ACER's split.
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Plate 01 · Section III · sciences
Stimulus-grouped science MCQs, the real GAMSAT shape.
Each stimulus — a graph, table, reaction scheme, free-body diagram — carries 2–5 questions. Reasoning from new information, not recall of facts you've memorised. 40% chemistry, 40% biology, 20% physics, matching ACER's split.
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Stimulus first
Read the graph, then answer 2–5 questions tied to it. No standalone trivia.
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Explanations every time
Why the right answer is right, and why each distractor was tempting.
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Discipline balance
40/40/20 across chem · bio · physics. Sit a paper and the mix is calibrated.
Chemistry · acid-base equilibria
Figure 1. Titration curve of 25.0 mL of a weak monoprotic acid (HA) with 0.100 M NaOH.
Equivalence point at VNaOH ≈ 25 mL · pH ≈ 8.7 · half-equivalence pH ≈ 4.74
Which value best estimates the pKa of HA, and why?
ApKa ≈ 4.74 — at half-equivalence, [HA] = [A⁻], so pH = pKa by Henderson–Hasselbalch✓
BpKa ≈ 8.7 — the equivalence-point pH equals pKa for any weak acid
CpKa ≈ 7.0 — the inflection point of the titration curve
DpKa cannot be determined without the initial pH of the acid
Correct — option A. At half-equivalence, half of the weak acid is neutralised, leaving [HA] = [A⁻]. Henderson–Hasselbalch reduces to pH = pKa. The equivalence-point pH > 7 reflects the basicity of A⁻, not the pKa of HA. This is a stimulus-driven Section III item — the graph supplies the data; the chemistry supplies the reasoning.
Humanities · Q1 of 3
The new tools arrive promising leisure. Each generation greets them the same way — washing machines, microwaves, email, AI — with a small inward bow of relief: at last, something will do this for me. And each generation, within a few years, finds itself working longer hours than before. The labour saved is not returned to the labourer; it accrues to whoever owns the labour-saving device. The promise of leisure was always a promise of productivity in disguise.
— original passage
The author's central claim is best summarised as:
ALabour-saving technologies transfer the value of saved time from workers to owners✓
BModern technology has failed to deliver leisure because of poor design
CEach generation is too quick to embrace new tools without scepticism
DProductivity gains from technology are inevitable and morally neutral
Correct — option A. The author's pivot — "The labour saved is not returned to the labourer; it accrues to whoever owns the labour-saving device" — is the load-bearing claim. B and C describe surface observations the passage makes in passing; D contradicts the passage. Section I tests *reading the argument*, not just the topic.
Plate 02 · Section I · humanities
Reasoning from prose, poetry, cartoons, diagrams.
Every stimulus is original — written for GAMSAT-shaped reasoning. Each one carries 2–5 questions on close reading, author intent, argument evaluation, inference. ACER's emphasis: novel application, not recall.
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Stimulus variety
Prose fiction and non-fiction, poetry, plays, cartoons, tables, diagrams — the full ACER range.
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Original passages
Commissioned originals across themes. Never paraphrased from published authors.
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Tagged by skill
Main idea, intent, inference, argument flaw — track which skill you keep missing.
Plate 03 · Section II · written task
Task A and Task B prompts, graded by an LLM examiner.
Four quotes on a theme — write a coherent response. Your essay is read by an LLM examiner three independent times across two criteria (Thought-and-content, Organisation-and-expression), then averaged. Variance is shown, so you see how stable your score is.
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ACER-shaped prompts
Task A (socio-cultural) and Task B (personal/reflective). Four quotes per prompt, just like the real exam.
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3 independent reads
Each essay graded three times, mean-of-three. Variance visible so you can see grader uncertainty.
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Exam-mode timing
Optional 30-minute countdown — toggle on for a realistic Section II sit.
Task A · Justice and punishment
"The degree of civilisation in a society can be judged by entering its prisons."
— Fyodor Dostoevsky"Punishment is justice for the unjust."
— attributed, Saint Augustine"A society that has more prisoners than university graduates has misunderstood both."
— anonymous, oral history, 2003"Mercy is the fairest mark of justice."
— Mary ShelleyWrite a structured response engaging with the ideas above. You may agree, disagree, or complicate any of the positions.
Start writing here…
68%
Overall accuracy
312 items · 14-day window
Section I — humanities74%
Section III — biology71%
Section III — chemistry66%
Section III — physics54%
Section II — Task A6.4 / 10
Section II — Task B7.1 / 10
Focus area · this week
Section III — Physics. Mechanics + waves, 54% over 14 days.
Plate 04 · per-section insights
Where you actually stand, by section.
Section-by-section accuracy across every item you've answered, rolling 14-day window. Section II essays included with their mean LLM score. The weakest section is highlighted — that's where tomorrow's set starts.
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Real attempts, not estimates
Computed from your actual answers, never a self-rating.
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Section-aware
S1, S2, S3 tracked separately — and S3 broken down by discipline.
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Picked-for-you focus
The lowest section with enough volume becomes tomorrow's recommended drill.
GAMSAT essentials · card 12 of 24
SN2 vs E2 selectivity. Given: - secondary alkyl halide - strong, bulky base (e.g. t-BuOK) - polar aprotic solvent (DMSO) Which mechanism dominates, and what is the single most important reason?
tap to reveal
Answer
E2 dominates. The bulky base cannot easily reach the α-carbon for SN2 backside attack, but it can readily abstract the β-hydrogen. Polar aprotic + secondary + bulky strong base ⇒ elimination wins. • Strong + bulky base → favours E2 • Polar aprotic → both SN2 and E2 enabled, but steric is decisive • Tertiary substrate would push even further to E2 / E1
tap to flip back
12 / 24
Plate 05 · flashcards
Spaced repetition, seeded from your weak topics.
Cards you nearly miss reappear sooner. Decks seeded from your weakest Section III topics this week — so the next 15 minutes of revision starts where it matters.
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Default-on spacing
SM-2 schedules each card; no deck construction needed.
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Reasoning, not labels
Cards prompt mechanism + reasoning, not single-word recall.
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Add your own
Anything you read in a textbook — paste it, tag it, it joins the cadence.
Plate 06 · exam mode
Sit a full Section III paper. 75 items, 150 minutes.
Real ACER timing and shape. Flagging grid, no drip-fed feedback until the bell. The debrief afterwards links each miss back to a topic, a card, or a stimulus to revisit.
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One paper, one debrief
No interruptions during. After: one scrollable page linking every miss to what closes the gap.
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Flag & return
The grid tells you what's answered, flagged, and untouched — at a glance.
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Real GAMSAT timing
75 items at the actual 150-minute clock. Pacing tested honestly.
Section III Paper · Q12 / 75
2:18:42
Q12 — A 2.0 kg trolley moving at 3.0 m/s collides inelastically with a stationary 4.0 kg trolley on a frictionless track. What is the velocity of the combined mass immediately after collision?
A0.5 m/s
B1.0 m/s
C1.5 m/s
D2.0 m/s
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About GAMSAT Pro
AI-powered prep for the Graduate Medical School Admissions Test.
GAMSAT Pro is an AI-powered Graduate Medical School Admissions Test prep platform. Practise Section I reasoning across prose, poetry and diagrams; draft Section II essays against Task A and Task B prompt sets with LLM-graded feedback; sit Section III stimulus-grouped MCQs across chemistry, biology and physics — with insights that pinpoint your weakest section.
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Real humans on supportSix tools, three sections.
Stimulus-grouped MCQs across humanities and sciences. LLM-graded essays for the written task. A 75-question timed paper. Insights that tell you which section to revise next.
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02
Section I · humanities
Original prose, poetry, cartoons, tables. Close reading and argument evaluation.
03
Section II · written task
Task A and Task B prompts. LLM-graded with 3 independent reader passes.
04
Per-section insights
Accuracy tracked separately for S1, S2 and S3 so you know where to focus next.
05
Flashcards
SM-2 spaced repetition seeded from your weakest topics this week.
06
Exam mode
Full 75-question Section III paper at ACER timing, with debrief.
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The team
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Raymond
GP, Adelaide, SA
FRACGP, M.D. (Griffith University)
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Ophthalmology Registrar, Sydney, NSW
M.D. (University of Melbourne)
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ENT Registrar, Adelaide, SA
M.D. (Griffith University)
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GP, Adelaide, SA
FRACGP, M.D. (Griffith University)