Science for Everyone

General knowledge questions/answers related to common and general sciences for competitive examinations.

1. What is, the chemical symbol, for water,?
   Answer: “H2O”..

2.What is ,the largest organ, in the human body,?
Answer: “Skin”..

3. What is, the process, by which plants make, their own food, called?
   Answer: “Photosynthesis”..
4. What is, the chemical symbol, for gold?
   Answer: “Au”..
5. What is ,the closest planet, to the Sun?
   Answer: “Mercury”..
6. What is ,the chemical formula, for table salt,?
   Answer: “NaCl”..
7. Who is regarded, as the father of, modern physics?
   Answer: “Albert Einstein”..
8. What is, the study of earthquakes, called?
   Answer: “Seismology”..
9. What is, the hardest natural substance, on Earth?
   Answer: “Diamond”..
10. What is, the powerhouse, of the cell?
    Answer: “Mitochondria”..
11. What is ,the chemical symbol, for oxygen?
    Answer: “O2”..
12. What is, the main gas, that makes up the Earth’s atmosphere,?
    Answer: “Nitrogen”..
13. What causes tides, in the ocean?
    Answer: “Gravitational pull from the Moon and the Sun”..
14. What is, the study of living organisms, called?
    Answer: “Biology”.
15. What is, the process by which water changes, from a liquid, to a gas called?
    Answer: “Evaporation”..
16. What is, the chemical symbol, for carbon dioxide?
    Answer: “CO2”..
17. What is ,the layer of the Earth’s atmosphere, where weather occurs?
    Answer: “Troposphere”..
18. What is, the only planet, in the solar system, known to support life?
    Answer: “Earth”..
19. What is, the study of the Earth’s physical structure, and substance called?
    Answer: “Geology”..
20. What is, the process by which plants release water vapour, into the atmosphere called?
    Answer: “Transpiration”..