States of Matter MCQs

11. Which force is strongest in solids?
A) Gravitational
B) Intermolecular
C) Magnetic
D) Electrical
Answer: B) Intermolecular

12. Which state has particles that vibrate in fixed positions?
A) Gas
B) Liquid
C) Solid
D) Plasma
Answer: C) Solid

13. The process of gas changing into liquid is called:
A) Evaporation
B) Sublimation
C) Condensation
D) Freezing
Answer: C) Condensation

14. The process of liquid changing into solid is called:
A) Melting
B) Freezing
C) Boiling
D) Sublimation
Answer: B) Freezing

15. Boiling occurs when:
A) Surface particles escape
B) Entire liquid changes to gas
C) Temperature decreases
D) Pressure increases
Answer: B) Entire liquid changes to gas

16. The particles in gases are:
A) Closely packed
B) Fixed
C) Far apart
D) Vibrating only
Answer: C) Far apart

17. Which state has the least density?
A) Solid
B) Liquid
C) Gas
D) Plasma
Answer: C) Gas

18. The process of solid to liquid is called:
A) Freezing
B) Melting
C) Condensation
D) Sublimation
Answer: B) Melting

19. Which state of matter expands to fill its container?
A) Solid
B) Liquid
C) Gas
D) Ice
Answer: C) Gas

20. Which state has moderate intermolecular forces?
A) Solid
B) Liquid
C) Gas
D) Plasma
Answer: B) Liquid