Which of the following is a common example of a suspension found in daily life?
Muddy water
A suspension is a heterogeneous mixture in which relatively large, insoluble solid particles are dispersed in a liquid; the particles are big enough to settle out on standing and to scatter light. Muddy water is a classic everyday example: the soil particles are suspended in water and slowly settle down.
Milk is a colloid (an emulsion of fat droplets in water). Starch solution is also a colloid, not a coarse suspension. Salt water is a true solution because sodium chloride dissolves at the molecular level. Only muddy water fits the definition of a suspension.
Hence, the answer is Muddy water.
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