Tincture of iodine has antiseptic properties. This solution is made by dissolving

Smoke and fog both are aerosols. In what way are they different?

Calculate the mass of water and mass of glucose required to make $250 \, g$ of $40 \%$ solution of glucose.

Sucrose (sugar) crystals obtained from sugarcane and beetroot are mixed together. Will it be a pure substance or a mixture? Give reasons for the same.

Define chromatography.

$A$ child wanted to separate the mixture of dyes constituting a sample of ink. He marked a line by the ink on the filter paper and placed the filter paper in a glass containing water as shown in the figure. The filter paper was removed when the water moved near the top of the filter paper.
$(i)$ What would you expect to see,if the ink contains three different coloured components?
$(ii)$ Name the technique used by the child.
$(iii)$ Suggest one more application of this technique.