21. Which mixture can be filtered?
A) Solution
B) Suspension
C) True solution
D) Salt solution
Answer: B
22. Brownian motion is observed in:
A) Solutions
B) Suspensions
C) Colloids
D) All
Answer: C
23. Which mixture scatters light?
A) Solution
B) Suspension
C) Both B and C
D) None
Answer: C
24. Suspension particles are:
A) Invisible
B) Visible
C) Atomic
D) Ionic
Answer: B
25. Which one is stable?
A) Suspension
B) Solution
C) Both
D) None
Answer: B
26. Solvent in salt solution is:
A) Salt
B) Water
C) Both
D) None
Answer: B
27. Which type of solution is air?
A) Solid in liquid
B) Gas in gas
C) Liquid in gas
D) Solid in gas
Answer: B
28. Brass is an example of:
A) Liquid solution
B) Solid solution
C) Suspension
D) Colloid
Answer: B
29. Concentrated solution contains:
A) Less solute
B) More solute
C) No solute
D) Equal solute
Answer: B
30. Dilute solution contains:
A) More solute
B) Less solute
C) Equal solute
D) Only solvent
Answer: B