EASY QUESTIONS (1–15)
1. The Kinetic Molecular Theory explains the behavior of what state of matter?
a. Liquids
b. Gases
c. Solids
d. Plasma
2. According to the Kinetic Molecular Theory, gas particles move in what way?
a. Slowly and regularly
b. Randomly and constantly
c. Only upward
d. Only downward
3. Gas particles are very far apart compared to what?
a. Solid particles
b. Liquid particles
c. Plasma particles
d. Metal particles
4. Which law explains the relationship between pressure and volume of a gas?
a. Boyle’s Law
b. Charles’ Law
c. Newton’s Law
d. Ohm’s Law
5. When the volume decreases, the pressure of a gas will:
a. Increase
b. Decrease
c. Remain constant
d. Disappear
6. Which law explains the relationship between volume and temperature?
a. Boyle’s Law
b. Charles’ Law
c. Dalton’s Law
d. Hooke’s Law
7. When the temperature increases, the volume of a gas will:
a. Increase
b. Decrease
c. Remain the same
d. Become zero
8. Which biomolecule is the main source of energy for the body?
a. Lipids
b. Carbohydrates
c. Proteins
d. Nucleic acids
9. Which biomolecule helps in building and repairing body tissues?
a. Carbohydrates
b. Lipids
c. Proteins
d. Minerals
10. Which biomolecule stores long-term energy?
a. Lipids
b. Proteins
c. Vitamins
d. Water
11. DNA belongs to which biomolecule group?
a. Proteins
b. Lipids
c. Nucleic acids
d. Carbohydrates
12. Which of the following is an example of carbohydrate?
a. Bread
b. Oil
c. Meat
d. Egg
13. Gas pressure is caused by the collision of gas particles with the:
a. Container walls
b. Gas molecules
c. Liquid surface
d. Solid surface
14. Which instrument measures gas pressure?
a. Thermometer
b. Barometer
c. Balance
d. Ruler
15. What happens to gas particles when temperature increases?
a. Move slower
b. Move faster
c. Stop moving
d. Become smaller
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AVERAGE QUESTIONS (16–30)
16. According to Boyle’s Law, when the volume doubles, the pressure will:
a. Double
b. Be half
c. Stay the same
d. Become zero
17. A gas occupies 10 L at high pressure. If pressure decreases, the volume will:
a. Decrease
b. Increase
c. Stay the same
d. Disappear
18. Which situation shows Boyle’s Law?
a. Inflating a balloon
b. Compressing a syringe
c. Heating air in a balloon
d. Cooling a balloon
19. Which situation shows Charles’ Law?
a. Balloon expands when heated
b. Syringe is compressed
c. Pumping air in tire
d. Gas escapes container
20. In Charles’ Law, temperature must be measured in:
a. Celsius
b. Kelvin
c. Fahrenheit
d. Meters
21. When gas particles move faster, the temperature:
a. Decreases
b. Increases
c. Remains constant
d. Stops changing
22. Which biomolecule forms enzymes?
a. Proteins
b. Lipids
c. Carbohydrates
d. Vitamins
23. Which biomolecule forms the cell membrane?
a. Carbohydrates
b. Lipids
c. Proteins
d. Minerals
24. Butter and oil belong to which biomolecule?
a. Proteins
b. Lipids
c. Carbohydrates
d. Nucleic acids
25. Which biomolecule carries genetic information?
a. Lipids
b. Nucleic acids
c. Carbohydrates
d. Proteins
26. If gas temperature decreases, the gas volume will:
a. Increase
b. Decrease
c. Remain constant
d. Disappear
27. The movement of gas particles is described as:
a. Vibrating only
b. Moving randomly
c. Staying still
d. Moving slowly
28. Which of the following foods is rich in protein?
a. Rice
b. Fish
c. Bread
d. Sugar
29. The space between gas particles is:
a. Very small
b. Very large
c. Equal
d. Zero
30. Which law explains why a balloon shrinks in cold weather?
a. Boyle’s Law
b. Charles’ Law
c. Newton’s Law
d. Hooke’s Law
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DIFFICULT QUESTIONS (31–40)
31. A gas has a volume of 5 L at a certain pressure. If the pressure doubles, the new volume will be:
a. 10 L
b. 5 L
c. 2.5 L
d. 20 L
32. A gas occupies 8 L at 300 K. If temperature increases to 600 K, the new volume will be:
a. 4 L
b. 8 L
c. 12 L
d. 16 L
33. Which statement correctly describes the Kinetic Molecular Theory?
a. Gas particles attract strongly
b. Gas particles move randomly
c. Gas particles stop moving
d. Gas particles stay fixed
34. Gas pressure increases when gas particles:
a. Collide less often
b. Move slowly
c. Collide more often
d. Stop moving
35. Which biomolecule acts as chemical messengers (hormones) in some cases?
a. Lipids
b. Carbohydrates
c. Proteins
d. Vitamins
36. Which molecule stores and transfers genetic instructions?
a. DNA
b. Glucose
c. Fatty acids
d. Amino acids
37. What happens to gas pressure if the container volume becomes smaller?
a. Pressure increases
b. Pressure decreases
c. Pressure disappears
d. Pressure remains equal
38. A balloon expands when heated because gas particles:
a. Move slower
b. Move faster
c. Become smaller
d. Become heavier
39. Amino acids are the building blocks of:
a. Proteins
b. Lipids
c. Carbohydrates
d. Nucleic acids
40. Glucose belongs to which biomolecule group?
a. Lipids
b. Proteins
c. Carbohydrates
d. Nucleic acids
