81. Which mixture is not stable over time?
A) Solution
B) Suspension
C) Alloy
D) Air
Answer: B
82. Which factor affects gas solubility most?
A) Temperature
B) Pressure
C) Volume
D) Density
Answer: B
83. Which mixture can be separated by evaporation?
A) Suspension
B) Solution
C) Gas
D) Liquid
Answer: B
84. Which mixture is uniform throughout?
A) Suspension
B) Solution
C) Mud
D) Oil-water
Answer: B
85. Which one has smallest particle size?
A) Suspension
B) Colloid
C) Solution
D) Solid
Answer: C
86. Which mixture is least stable?
A) Solution
B) Suspension
C) Colloid
D) Alloy
Answer: B
87. Which property helps identify suspension?
A) Transparency
B) Settling
C) Uniformity
D) Solubility
Answer: B
88.Which mixture is cloudy and opaque?
A) Solution
B) Suspension
C) Gas
D) Liquid
Answer: B
89. Which solution is used in daily life?
A) Salt water
B) Sand water
C) Mud
D) Dust
Answer: A
90. Which mixture is filtered easily?
A) Solution
B) Suspension
C) Gas
D) Liquid
Answer: B