Physics, Chemistry and Biology - One Line Questions

1. What is the pH of pure water? — 7
2. Which phenomenon causes the blue color of the sky? — Scattering of light
3. What is the chemical symbol for gold? — Au
4. Which of the following is an alloy of copper and zinc? — Brass
5. What is the main component of bones? — Calcium Phosphate
6. Which gas is produced during photosynthesis? — Oxygen
7. According to Newton's first law of motion, an object will continue to do what unless acted upon by an external force? — Remain at rest or in uniform motion
8. Which type of mirror is used in a periscope to reverse the image? — Plane mirror
9. What is the process of conversion of liquid into vapor called? — Evaporation
10. Which lens is used to correct myopia (nearsightedness)? — Concave lens
11. What is the mass per unit volume of a substance called? — Density
12. What is the process by which organisms grow and repair themselves? — Cellular respiration
13. What is the primary function of red blood cells? — Transporting oxygen
14. What is the process of adding impurities to a semiconductor to increase its conductivity called? — Doping
15. What is the scientific study of living organisms called? — Biology
16. What is the unit of radioactive decay? — Becquerel
17. What is the SI unit of frequency? — Hertz
18. What is the chemical symbol for iron? — Fe
19. What is the SI unit of force? — Newton
20. What is the unit of power? — Joule per second
21. What is the chemical formula for common salt? — NaCl
22. Which type of energy is stored in a compressed spring? — Potential energy
23. Which is the largest organ in the human body? — Skin
24. Which organ in the human body is responsible for pumping blood? — Heart
25. What is the process by which solid changes directly into gas? — Sublimation
26. Which of the following is a non-metal that is liquid at room temperature? — Bromine
27. What is the unit of angular velocity? — Radians per second
28. What is the property of a substance to resist changes to its state of motion called? — Inertia
29. What is the tendency of an object to remain in its state of rest or uniform motion called? — Inertia
30. What is the unit of energy? — Joule
31. What is the unit of pressure? — Pascal
32. Which law states that the voltage across a conductor is directly proportional to the current flowing through it, provided all physical conditions and temperature remain the same? — Ohm's Law
33. What is the primary gas that causes the greenhouse effect? — Carbon Dioxide
34. What is the powerhouse of the cell? — Mitochondrion
35. Which gas is most abundant in the Earth's atmosphere? — Nitrogen
36. Which of the following is a noble gas? — Neon
37. Which blood component is responsible for carrying oxygen? — Red blood cells
38. Which type of cells are responsible for immunity in the human body? — White blood cells
39. What is the phenomenon of light bending as it passes from one medium to another called? — Refraction
40. What is the process by which plants release water vapor into the atmosphere? — Transpiration
41. What is the process of breaking down food into simpler substances that can be absorbed by the body called? — Digestion
42. Which part of the plant is responsible for photosynthesis? — Leaf
43. What is the chemical symbol for silver? — Ag
44. Which element is known as the 'King of Chemicals'? — Sulfuric Acid
45. Which hormone regulates blood sugar levels? — Insulin
46. What is the basic unit of life? — Cell
47. Which of the following is a scalar quantity? — Speed
48. Which of the following is an example of a base? — Soap
49. Which vitamin is essential for blood clotting? — Vitamin K
50. What is the SI unit of electric current? — Ampere
All One Line Questions
E-Book Physics, Chemistry and Biology Online Test Physics, Chemistry and Biology Question Bank Physics, Chemistry and Biology