Science quiz questions with answers — 20 to use today.

Use them as a quick end-of-unit check, a starter on the first lesson back, revision before a test, or a model for writing your own. Every question has one correct answer except question 5, which has two, so the set also shows how a multiple-correct question works. All twenty fit in one Quizoma quiz.

The 20 science quiz questions with answers

Correct answers are marked with a tick. The same questions, with the same answers, are in the CSV file, in the same order.

Biology

1. Which organelle carries out photosynthesis in plant cells?
   A. Mitochondrion · B. Chloroplast ✓ · C. Nucleus · D. Ribosome
2. Which type of blood vessel carries blood away from the heart?
   A. Artery ✓ · B. Vein · C. Capillary · D. Venule
3. Which organ pumps blood around the body?
   A. Lungs · B. Liver · C. Heart ✓ · D. Kidney
4. Which gas do plants take in from the air for photosynthesis?
   A. Oxygen · B. Carbon dioxide ✓ · C. Nitrogen · D. Hydrogen
5. Which of these animals are mammals? (more than one answer)
   A. Whale ✓ · B. Bat ✓ · C. Shark · D. Penguin

Chemistry

6. What is the chemical symbol for sodium?
   A. So · B. Sd · C. Na ✓ · D. S
7. What is the chemical formula for water?
   A. CO2 · B. H2O ✓ · C. O2 · D. NaCl
8. What is the pH of pure water at 25 °C?
   A. 1 · B. 7 ✓ · C. 10 · D. 14
9. Which of these is a noble gas?
   A. Oxygen · B. Helium ✓ · C. Nitrogen · D. Hydrogen
10. What is the hardest naturally occurring substance?
    A. Gold · B. Iron · C. Diamond ✓ · D. Quartz

Physics

11. What is the SI unit of force?
    A. Joule · B. Newton ✓ · C. Watt · D. Pascal
12. Which of these is a unit of energy?
    A. Newton · B. Joule ✓ · C. Watt · D. Volt
13. What is it called when light bends as it passes from air into water?
    A. Reflection · B. Refraction ✓ · C. Diffraction · D. Dispersion
14. Roughly how fast does light travel in a vacuum?
    A. 300 km/s · B. 3,000 km/s · C. 300,000 km/s ✓ · D. 30,000 km/s
15. Which of these is a renewable energy source?
    A. Coal · B. Natural gas · C. Wind ✓ · D. Diesel

Earth & space

16. Which planet is closest to the Sun?
    A. Venus · B. Earth · C. Mercury ✓ · D. Mars
17. Which planet is known as the Red Planet?
    A. Jupiter · B. Mars ✓ · C. Venus · D. Saturn
18. Which is the largest planet in our solar system?
    A. Saturn · B. Neptune · C. Earth · D. Jupiter ✓
19. What causes day and night on Earth?
    A. Earth orbiting the Sun · B. Earth spinning on its axis ✓ · C. The Moon orbiting Earth · D. The tilt of Earth's axis
20. Which gas makes up most of Earth's atmosphere?
    A. Oxygen · B. Carbon dioxide · C. Nitrogen ✓ · D. Argon

Some distractors are there on purpose. Students who pick Mitochondrion in question 1 often remember "the organelle that makes energy" without separating respiration from photosynthesis; Watt in question 12 mixes up energy with power; and Earth orbiting the Sun in question 19 confuses a day with a year. If a third of the class falls for one of those, that is the next lesson's starter — Quizoma's results show the accuracy of every question, so you will see it straight away.

Students can use the same set to revise on their own: import it, switch on Show Score and Retake, and it becomes a practice test they can take until every answer sticks.

How to use this template

1. Download the file: quizoma-template-science-mcq-quiz.csv.
2. Open Quizoma Studio in your browser (or the Android app) and choose Import from file.
3. Pick the .csv. Quizoma shows every question for review before anything is saved, so you can fix a wording, drop a question or add your own.
4. Save, then share the 6-character quiz code or QR with your class. Participants answer at quizoma.com/take in any browser.

Timing and points are set on the quiz when you import, not in the file. If you would rather not import at all, you can type the questions into the online quiz maker directly.

What is in the file

One row per question: the question, then the options, then a final correct column holding the number of the right option. Where more than one option is right, the numbers are joined with a |. The first lines look like this:

question,option1,option2,option3,option4,correct
Which organelle carries out photosynthesis in plant cells?,Mitochondrion,Chloroplast,Nucleus,Ribosome,2
What is the chemical symbol for sodium?,So,Sd,Na,S,3

Open it in any spreadsheet to edit, and save it as CSV again before importing — an .xlsx file is not read. The same format is described on the templates page.