Explanation
This question can be solved through the process of elimination,Blood is a colloidal substance because there are macromolecules (antibodies, proteins) in the blood. Milk is a colloidal solution of fat (globules).Ice cream is a colloid, combining an emulsion and a foam, of milk fats.
As options A, B and C are colloids, the only option that is left that is not a colloid is D.
Brass consists of two metals: copper (approximately 70%) and zinc (approximately 30%). It is an alloy, which is a solid homogeneous mixture.
All the elements and compounds are pure substances because they contain only one kind of particle.
For example, Hydrogen, oxygen, nitrogen, chlorine, iodine, carbon, iron, copper, etc are pure substances(elements).
Water, sodium chloride, hydrochloric acid, camphor, etc are pure substances (compounds).
To separate ammonium chloride from common salt, we use:
When a mixture of common salt and ammonium chloride is heated, white fumes are liberated which change into a white deposit as they solidify. What is this substance?
Mixtures in which components can be distinguished are called:
How will you obtain common salt from sea water?
Water free from dissolved impurities and gases can be obtained by:
Crude oil is purified using fractional distillation process. This method works on the principle of:
We can get a pure liquid from a solution by:
Two miscible liquids are separated by:
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