Practice · Beta · Free with your email
A free IB question bank: Biology, Chemistry and Economics, topic by topic.
506 questions across every topic, each one built on a question the IB has set. Biology and Chemistry: Paper 1A multiple choice, Paper 1B data questions with graphs, Paper 2 written answers. Economics: Paper 1 essays, Paper 2 data response and Paper 3 policy papers, following the papers set since 2022. Each comes with the mark scheme or markbands, a model answer and the idea it tests.
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- Answer it like the exam.Multiple choice is checked the moment you answer. For written answers you type, then tick the mark points you hit, the way an examiner marks. Essays and data responses are marked against the markbands: pick the band your answer reaches.
- Every mark explained.The mark scheme, a model answer and the reasoning, for every part of every question. Scores save topic by topic, and with a free account they follow you to every device.
- Video walkthroughs.Video solutions sit beside the mark scheme. Ask for the ones you want and we record the most-asked first.
Subjects
Inside Biology
A Unity and diversity
B Form and function
C Interaction and interdependence
D Continuity and change
Inside Chemistry
S1 Models of the particulate nature of matter
S2 Models of bonding and structure
S3 Classification of matter
R1 What drives chemical reactions?
R2 How much, how fast and how far?
R3 What are the mechanisms of chemical change?
Inside Economics
2 Microeconomics
3 Macroeconomics
4 The global economy
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Questions
Is there a free IB Biology, Chemistry or Economics question bank?
Yes. LimeAdmissions has 506 exam-style questions for IB Biology (207), Chemistry (197) and Economics (102), sorted by syllabus topic, each with a mark scheme or markbands and a model answer. They are free: type your email once and every question opens.
Are these real IB past paper questions?
Each question is built on a question the IB has set. The Biology and Chemistry questions are original, with new contexts and invented data, in the style of the papers set since the 2025 syllabus. The Economics questions follow the Paper 1, 2 and 3 questions set since 2022, in the same formats and with the same markbands. The International Baccalaureate has not endorsed them.
Do the questions come with mark schemes?
Yes. Multiple choice is checked as you answer. Written answers come with the mark points to tick, the way an examiner marks, and essays and data responses with the markbands. Every question has a model answer and the reasoning behind it.
Which syllabus do the questions follow?
Biology and Chemistry follow the syllabus first examined in May 2025. Economics follows the syllabus first examined in May 2022. Topics carry the subject guide's own codes, such as A1.1, R2.2 or 2.11.
Can I track my progress?
Scores save topic by topic in your browser. A free account, signed in with a code by email, keeps them on every device.
Every Biology and Chemistry question here is original, written for practice in the style of the papers set since the 2025 syllabus, with invented data. The Economics questions follow the Paper 1, 2 and 3 questions set since 2022, question by question, in the same formats and with the same demands and markbands. Developed independently from the International Baccalaureate Organization, which has not endorsed it. Found a mistake? Email vytis@limeadmissions.com with the question id.