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1. What is the process by which plants make their own food using sunlight?
2. If a train travels 120 km in 2 hours, what is its average speed?
3. Which gas is most abundant in the Earth's atmosphere?
4. What is the formula for the area of a circle with radius r?
5. Name the organ in the human body responsible for pumping blood.
6. State Newton's law of universal gravitation in one line.
7. Which is the largest mammal on Earth?
8. What is the boiling point of pure water at sea level (in °C)?
9. What is the capital city of Australia?
10. What is the approximate speed of sound in air at room temperature?
11. Solve: 2x + 5 = 17. Find x.
12. What does DNA stand for?
13. State Ohm's law.
14. By how many degrees is the Earth's axis tilted from the vertical?
15. Define an ecosystem in one sentence.

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Answer key & explanations

Quick answers for the sample questions above so you can self-check before generating a fresh AI mock test.

1. Q1: Photosynthesis. Plants use sunlight, water and carbon dioxide to produce glucose and oxygen.
2. Q2: Average speed = distance / time = 120 km / 2 h = 60 km/h.
3. Q3: Nitrogen, which makes up about 78% of the Earth's atmosphere by volume.
4. Q4: Area of a circle = π r² (pi times the radius squared).
5. Q5: The heart. It pumps oxygenated blood to the body and receives deoxygenated blood back from it.
6. Q6: Every two bodies attract each other with a force directly proportional to the product of their masses and inversely proportional to the square of the distance between them: F = G·m₁m₂ / r².
7. Q7: The blue whale — it can grow up to about 30 metres long and weigh over 150 tonnes.
8. Q8: 100 °C (212 °F) at standard atmospheric pressure (1 atm) at sea level.
9. Q9: Canberra. (Sydney is the largest city, but Canberra is the capital.)
10. Q10: About 343 m/s (≈ 1235 km/h) in dry air at 20 °C.
11. Q11: 2x + 5 = 17 ⇒ 2x = 12 ⇒ x = 6.
12. Q12: Deoxyribonucleic Acid — the molecule that carries genetic instructions in living organisms.
13. Q13: At constant temperature, the current flowing through a conductor is directly proportional to the voltage across it: V = I × R.
14. Q14: About 23.5° from the vertical (more precisely 23.44°). This tilt causes the seasons.
15. Q15: A community of living organisms (plants, animals, microbes) interacting with each other and with their non-living environment (air, water, soil) as a system.

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1. 1Paste your own sample questions or upload a photo of a question paper.
2. 2Choose how many questions to generate and the difficulty level.
3. 3Click Generate — the AI produces a fresh set of practice questions.
4. 4Take the timed or untimed exam directly in your browser.
5. 5Review your score with per-question explanations and hints.

Try AI exam preparation by class

Each link below opens a class-specific practice page with a ready-made starter set and AI-built mock test.

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