Determine the mass by mass percentage concentration of a 100g salt solution which contains 20g salt?

Classify the following substances in the below given table.

Ink, soda water, brass, fog, blood, aerosol sprays, fruit salad, black coffee, oil and water, boot polish, air, nail polish, starch solution, milk.

Take a solution, a suspension, a colloidal dispersion in different beakers. Test whether each of these mixtures shows the Tyndall effect by focusing a light at the side of the container.

Draw the figures of arrangement of apparatus for distillation and fractional distillation.

Calculate the concentration in terms of mass by volume percentage of the solution containing. 2.5g potassium chloride in 50ml of potassium chloride (KCl) solution?