Question

Air free from dust particles is heterogeneous micture

Answer 1

Answer:

hy your answer

Explanation:

Microscopically it is heterogeneous because on the surface of the solid particles of dust there is a change of phase (from gaseous to solid). Macroscopically it is heterogeneous because it is not totally transparent, so that a beam of light through it would have its path revealed by the Tyndall effect.

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Answer 2

Answer--- ◈

✦ Microscopically it is

heterogeneous because on the

surface of the solid particles of dust

there is a change of phase (from

gaseous to solid).