50+ Everyday Science MCQs

100 Everyday Science MCQs

🧪Everyday Science MCQs

1. What is the chemical symbol for water?
A) H₂O B) CO₂ C) NaCl D) O₂
2. The device used to measure temperature is called?
A) Thermometer B) Barometer C) Hygrometer D) Altimeter
3. Which planet is known as the Red Planet?
A) Mars B) Venus C) Jupiter D) Saturn
4. What is the main gas found in the air we breathe?
A) Oxygen B) Nitrogen C) Carbon dioxide D) Hydrogen
5. Which of these is NOT a primary color of light?
A) Red B) Green C) Blue D) Yellow
6. What is the hardest natural substance on Earth?
A) Diamond B) Gold C) Iron D) Quartz
7. Which part of the plant conducts photosynthesis?
A) Root B) Leaf C) Stem D) Flower
8. What is the pH value of pure water?
A) 5 B) 6 C) 7 D) 8
9. Which metal is liquid at room temperature?
A) Iron B) Copper C) Mercury D) Silver
10. What is the unit of electrical resistance?
A) Volt B) Ampere C) Ohm D) Watt
11. Which gas do plants absorb during photosynthesis?
A) Carbon dioxide B) Oxygen C) Nitrogen D) Hydrogen
12. What is the fastest land animal?
A) Cheetah B) Lion C) Horse D) Greyhound
13. Which of these is NOT a greenhouse gas?
A) Carbon dioxide B) Methane C) Oxygen D) Nitrous oxide
14. What is the largest organ of the human body?
A) Skin B) Liver C) Lungs D) Heart
15. Which planet is known as the "Morning Star"?
A) Mars B) Venus C) Mercury D) Jupiter
16. What is the main component of the Sun?
A) Oxygen B) Carbon C) Hydrogen D) Helium
17. Which vitamin is produced by the human body when exposed to sunlight?
A) Vitamin A B) Vitamin B C) Vitamin D D) Vitamin K
18. What is the boiling point of water at sea level?
A) 90°C B) 95°C C) 100°C D) 105°C
19. Which of these is a non-renewable energy source?
A) Coal B) Solar C) Wind D) Hydroelectric
20. What force keeps planets in orbit around the Sun?
A) Gravity B) Magnetism C) Friction D) Buoyancy
21. Which blood type is known as the universal donor?
A) O negative B) A positive C) B negative D) AB positive
22. What is the chemical symbol for gold?
A) Go B) Gd C) Au D) Ag
23. Which of these is NOT a type of rock?
A) Igneous B) Sedimentary C) Metamorphic D) Volcanic
24. What is the study of weather called?
A) Meteorology B) Geology C) Oceanography D) Climatology
25. Which organ produces insulin in the human body?
A) Liver B) Stomach C) Pancreas D) Kidney
26. What is the largest planet in our solar system?
A) Earth B) Saturn C) Jupiter D) Neptune
27. Which of these is a vector quantity?
A) Mass B) Temperature C) Force D) Energy
28. What is the main function of red blood cells?
A) Fight infection B) Carry oxygen C) Digest food D) Produce hormones
29. Which scientist proposed the theory of relativity?
A) Albert Einstein B) Isaac Newton C) Galileo Galilei D) Nikola Tesla
30. What is the chemical symbol for sodium?
A) So B) Sd C) Na D) Ni
31. Which of these is NOT a mammal?
A) Dolphin B) Bat C) Penguin D) Whale
32. What is the normal human body temperature in Celsius?
A) 35°C B) 36°C C) 37°C D) 38°C
33. Which gas is most abundant in Earth's atmosphere?
A) Oxygen B) Nitrogen C) Carbon dioxide D) Argon
34. What is the SI unit of force?
A) Newton B) Joule C) Watt D) Pascal
35. Which part of the atom has a positive charge?
A) Proton B) Neutron C) Electron D) Nucleus
36. What is the process by which plants lose water vapor?
A) Transpiration B) Photosynthesis C) Respiration D) Evaporation
37. Which metal is the best conductor of electricity?
A) Aluminum B) Silver C) Copper D) Gold
38. What is the main function of white blood cells?
A) Fight infection B) Carry oxygen C) Clot blood D) Digest food
39. Which of these is a renewable energy source?
A) Natural gas B) Wind C) Coal D) Petroleum
40. What is the chemical symbol for iron?
A) Ir B) Fe C) In D) Fi
41. Which of these is NOT a type of electromagnetic radiation?
A) X-rays B) Radio waves C) Sound waves D) Microwaves
42. What is the largest ocean on Earth?
A) Atlantic B) Pacific C) Indian D) Arctic
43. Which gas gives soda its fizz?
A) Carbon dioxide B) Oxygen C) Nitrogen D) Hydrogen
44. What is the study of fossils called?
A) Paleontology B) Archaeology C) Geology D) Anthropology
45. Which planet has the most moons in our solar system?
A) Earth B) Saturn C) Jupiter D) Mars
46. What is the chemical formula for table salt?
A) NaCl B) H₂O C) CO₂ D) C₆H₁₂O₆
47. Which of these is NOT a state of matter?
A) Solid B) Liquid C) Gas D) Energy
48. What is the unit of electric current?
A) Volt B) Ampere C) Ohm D) Watt
49. Which blood vessels carry blood away from the heart?
A) Arteries B) Veins C) Capillaries D) Venules
50. What is the freezing point of water in Fahrenheit?
A) 0°F B) 32°F C) 100°F D) 212°F
51. Which gas is most abundant in the Earth's atmosphere?
A) Oxygen B) Nitrogen C) Carbon Dioxide D) Argon
52. The device used to measure temperature is called?
A) Thermometer B) Barometer C) Hygrometer D) Altimeter
53. Water is a compound made up of which two elements?
A) Hydrogen and Oxygen B) Carbon and Oxygen C) Hydrogen and Nitrogen D) Oxygen and Helium
54. Which part of the plant conducts photosynthesis?
A) Roots B) Leaves C) Stem D) Flower