Writing your own practice questions: how and why it works

Most students answer questions that someone else wrote: textbook exercises, coaching sheets, mock tests. Writing your own questions sounds like a teacher's job, but it is a study strategy with its own research behind it. To write a good question, you have to know what matters in a topic, where the traps are, and what a correct answer looks like.

What does the research say about writing questions?

Mirjam Ebersbach and colleagues ran a study after a university lecture, published in Applied Cognitive Psychology in 2020. They compared three strategies: writing questions, answering test questions, and restudying. A week later, students' overall recall had benefited from writing questions and from testing, but not from restudying. The authors called question generation another powerful learning strategy, with effects similar to testing.

The type of question matters. Julie Bugg and Mark McDaniel trained students to write and answer either detail questions or conceptual questions about passages (Journal of Educational Psychology, 2012). Compared with rereading, writing and answering conceptual questions improved memory on conceptual test questions. Writing detail questions gave no benefit.

An older review by Barak Rosenshine, Carla Meister and Saul Chapman (Review of Educational Research, 1996) looked at studies that taught students to write questions about what they read. It found that comprehension improved on tests of new material.

So the lesson is specific. Questions that make you connect ideas help more than questions that ask you to recall a single fact.

Four question types that work in science

Use these stems. Each one makes you think about how ideas connect.

1. What if: "What happens to the time period of a pendulum if it is taken to the Moon?"

2. Why not: "Why does adding a catalyst not change the equilibrium constant?"

3. Trap: "Write a problem where a student who forgets to convert units gets a wrong answer that looks reasonable."

4. Compare: "How does a xylem vessel differ in structure from a phloem sieve tube, and why does each suit its job?"

The trap stem is especially useful for JEE and NEET. Writing out the wrong path makes you think about why it is wrong, which helps you spot it later.

A 20-minute routine after each chapter

1. Close the book. Write five questions on the chapter: at least three conceptual, one numerical and one trap.

2. Write the answers on a separate page, from memory, with working.

3. Check them against the textbook and fix any errors in the question or the answer.

4. Two or three days later, answer your own questions again without looking at your answers. Mark the ones you got wrong.

5. Swap with a friend if you can. Answering someone else's questions shows you angles you missed. See how to run a study group for a structure.

Keep the questions in one notebook or file per subject. Over a term, this becomes your own question bank, tuned to your weak spots. The best questions can become flashcards that work.

Example: a chemistry chapter

After Chemical Equilibrium, a student might write:

• "A reaction has Kc much greater than 1. What does that tell you about the equilibrium mixture, and what does it not tell you about how fast the reaction is?"

• "Increasing pressure shifts N2 + 3H2 ⇌ 2NH3 to the right. Write a gas-phase reaction where increasing pressure would have no effect, and explain why."

• "A student says that adding an inert gas at constant volume shifts the equilibrium. Are they right?"

Each one tests understanding, not just a definition. Writing the answer may show you something you cannot explain, and that is the most useful outcome. You have found a gap before the exam did.

Common mistakes

• Writing only easy recall questions because they are quick.

• Writing questions while looking at the book, then answering them straight away.

• Never coming back to answer them later.

Checking your answers

If you are not sure your answer to your own question is right, check it against the textbook or ask a teacher. The Fermi Concept Library has a lesson for every concept in physics, chemistry, biology and mathematics, which helps you check a "why" question you wrote yourself. You can also ask an AI to quiz you using your questions; see how to make an AI chatbot quiz you properly.