Which of the following will show 'Tyndall effect'?

List the points of differences between homogeneous and heterogeneous mixtures.

Give an example for each of the following:
$(a)$ Solid-liquid homogeneous mixture
$(b)$ Gas-gas homogeneous mixture
$(c)$ Solid-solid homogeneous mixture
$(d)$ Solid-liquid heterogeneous mixture
$(e)$ Liquid-liquid heterogeneous mixture

Differentiate between homogeneous and heterogeneous mixtures with examples.

State any one difference between pure and impure substances.

How is a pure substance different from a mixture?