← Daily MCQs
Everyday science MCQs with answers
12 questions for PPSC, FPSC, CSS, NTS and MDCAT practice, each with the answer and a short explanation. Take today's 10 →
1. What is the chemical formula of water?- CO2
- H2O
- O2
- NaCl
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B. H2O — Water is two hydrogen atoms and one oxygen atom.
2. Which gas do plants absorb from the air?- Oxygen
- Nitrogen
- Carbon dioxide
- Hydrogen
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C. Carbon dioxide — Plants take in carbon dioxide for photosynthesis.
3. What is the boiling point of water at sea level?- 90 °C
- 100 °C
- 110 °C
- 120 °C
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B. 100 °C — Water boils at 100 °C at normal air pressure.
4. Which organ pumps blood around the body?- Lungs
- Liver
- Heart
- Kidneys
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C. Heart — The heart pumps blood.
5. Which vitamin do we get from sunlight?- Vitamin A
- Vitamin B
- Vitamin C
- Vitamin D
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D. Vitamin D — The skin makes vitamin D in sunlight.
6. How many bones are there in an adult human body?- 196
- 206
- 216
- 306
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B. 206 — An adult has 206 bones.
7. What is the centre of an atom called?- Electron
- Nucleus
- Proton
- Shell
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B. Nucleus — The nucleus holds protons and neutrons.
8. Which is the closest star to the Earth?- Sirius
- The Sun
- Polaris
- Alpha Centauri
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B. The Sun — The Sun is the nearest star.
9. What is the SI unit of force?- Joule
- Watt
- Newton
- Pascal
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C. Newton — Force is measured in newtons.
10. Which blood group is called the universal donor?- A
- B
- AB
- O negative
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D. O negative — O negative red cells can usually be given to anyone.
11. What gas do humans breathe out the most of, compared with what they breathe in?- Oxygen
- Carbon dioxide
- Helium
- Hydrogen
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B. Carbon dioxide — We breathe out more carbon dioxide than we breathe in.
12. Which part of the plant makes food?- Root
- Stem
- Leaf
- Flower
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C. Leaf — Leaves make food by photosynthesis.
Everyday science MCQs with answers for P