Question: As shown in the figure, what are the liquids from top to bottom in sequence?
A. Solution, colloid, suspension
B. Solution, suspension, colloid
C. Colloid, solution, suspension
D. Colloid, suspension, solution
Clues:
1. In the top image, a distinct, straight red line, which is the path of a laser beam, is visible passing through the red liquid in the vial.
2. In the middle image, the path of the red laser beam is not visible as it passes through the blue liquid in the vial.
3. In the bottom image, the red laser beam causes the entire pink liquid to glow brightly and diffusely, and a distinct beam path is not visible.
Answer: C
Category: Physics