Tag: suspension

Questions Related to suspension

Match the List-I (Colloidal dispersion) with List-II (Nature of the dispersion) and select the correct answer using the codes given below the lists:

Lits-I(Cooloidal dispersion) List-II(Nature of dispersion)
A. Milk 1. Solid in liquid
B.Clouds 2. Liquid in gas
C. Paints 3. Solid in solid
D. Jellies 4. Liquid in liquid
5. Liquid in solid
chemistry nature of matter heterogeneous mixture - suspension and its properties suspension types of mixture

  1. A- 4; B- 2; C- 1; D- 5

  2. A- 1; B- 5; C- 3; D- 2

  3. A- 4; B- 5; C- 1; D- 2

  4. A- 1; B- 2; C- 3; D- 5

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Correct Option: A
Explanation:

Milk is an emulsion of dispersed phase as a liquid in the dispersion medium as a liquid. This makes A-4, excludes Option B and D from answer choice.
Cloud is aerosol where dispersed phase is liquid and the dispersion medium is gas, Thus this makes B-2.
Paint is a solid phase in liquid medium makes C-1 and Jellies are a liquid phase in solid medium makes D-5.
Thus, option A is correct.

Compounds that lowers the surface tension between two liquids or a liquid and a solid are called surfactants.

chemistry nature of matter heterogeneous mixture - suspension and its properties suspension types of mixture

  1. True

  2. False

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Correct Option: A
Explanation:

Any molecule which helps in decreasing the surface tension that is the inter facial tension between the two surfaces of liquids or solid-liquid surface is known as surfactants. Some common examples are Soaps and Detergents.
hence the answer is true

Powder coating is a process which requires a solvent to keep the binder and filler parts in a liquid suspension form.

chemistry composition of matter heterogeneous mixture - suspension and its properties suspension types of mixture

  1. True

  2. False

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Correct Option: B
Explanation:

The main difference between a conventional liquid paint and a powder coating is that the powder coating does not require a solvent to keep the binder and filler parts in a liquid suspension form while liquid paints require.

Colour of colloids depends on which of the following factors?

chemistry composition of matter heterogeneous mixture - suspension and its properties suspension types of mixture

  1. Size

  2. Mass

  3. Charge

  4. Nature

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Correct Option: A
Explanation:

Colour of colloidal solution depends upon particle size.
The colour of colloidal solution changes with size of particle, eg, as particle size increases, the colour of gold solution changes from red to blue and finally to golden.