General Science Questions and Answers for TNPSC Exam Part 2
21. What is the process by which an organism grows and develops from a single cell?
Cell division
22. Which gas is essential for respiration and is transported by red blood cells?
Oxygen (O2)
23. What is the chemical formula for table salt (sodium chloride)?
NaCl
24. Which vitamin is produced in the skin when exposed to sunlight?
Vitamin D
25. What is the main function of the heart in the human body?
Pumping blood
26. Which gas is the most abundant in the Earth's atmosphere?
Nitrogen (N2)
27. What is the chemical formula for sulfuric acid?
H2SO4
28. What is the chemical formula for carbon dioxide?
CO2
29. What is the chemical formula for glucose, a simple sugar used as an energy source in living organisms?
C6H12O6
30. Which gas is used in photosynthesis by plants and respiration by animals?
Oxygen (O2)
31. What is the process by which plants lose water vapor through small openings in their leaves?
Transpiration
32. What is the chemical formula for aspirin, a common pain reliever and anti-inflammatory drug?
C9H8O4
33. Which gas is produced as a result of the combustion of fossil fuels?
Carbon dioxide (CO2)
34. What is the chemical formula for ammonia, a common household cleaning agent?
NH3
35. Which gas is responsible for the fizz in carbonated beverages?
Carbon dioxide (CO2)
36. What is the chemical formula for sulfur dioxide, a gas produced by the burning of sulfur-containing fuels?
SO2
37. What is the chemical formula for ozone, a molecule that forms the ozone layer in the Earth's atmosphere?
O3
38. What is the chemical formula for nitric acid, a strong acid used in various industrial applications?
HNO3
39. Which gas is used in the manufacture of ammonia-based fertilizers?
Hydrogen (H2)
40. What is the chemical formula for carbon monoxide, a poisonous gas produced by incomplete combustion?
CO
