91. Which of the following is not a suspension?
A) Muddy water
B) Chalk in water
C) Salt solution
D) Dust in air
Answer: C
92. Which mixture has no visible particles?
A) Suspension
B) Solution
C) Sand
D) Dust
Answer: B
93. Which process removes insoluble particles?
A) Evaporation
B) Filtration
C) Distillation
D) Sublimation
Answer: B
94. Which mixture is used for drinking water purification?
A) Suspension
B) Solution
C) Filtration of suspension
D) Gas
Answer: C
95. Which one is an example of heterogeneous mixture?
A) Salt solution
B) Sugar solution
C) Sand in water
D) Air
Answer: C
96. Which of the following is true about solution?
A) Particles settle
B) Particles are visible
C) Particles do not settle
D) Particles are large
Answer: C
97. Which mixture forms sediment?
A) Solution
B) Suspension
C) Gas
D) Liquid
Answer: B
98. Which mixture has dispersed phase and dispersion medium?
A) Solution
B) Suspension
C) Both
D) None
Answer: C
99. Which one is not a homogeneous mixture?
A) Air
B) Salt solution
C) Suspension
D) Alloy
Answer: C
100. Which mixture shows maximum instability?
A) Solution
B) Colloid
C) Suspension
D) Alloy
Answer: C