Q10 of 25 Page 154

Give the dispersed phase and the dispersion medium in each of the following:

a. cheese b. soda water c. Smoke

The dispersed phase and the dispersion medium are the two components of a colloidal solution. The substance distributed as particles is called dispersed phase and the continuous phase in which colloidal particles are dispersed is called dispersion medium.


The dispersed phase and a dispersion medium for given samples can be summarized as follows:



More from this chapter

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8

Beaker A has sugar mixed with water and Beaker B has starch dissolved in water.

i) Which solution will scatter light?


ii) In which beaker does the Brownian movement take place?


iii) Name the type of solution that beaker A and beaker B contain.


iv) Which of the two solutions is homogeneous?


v) Identify the beaker that has particles of size 10Å to 2000Å

 9

Name the type of solution formed in the following cases:

i) 20g of NaCl in 100g of water.


ii) 36g of NaCl in 100g of water.


iii) 45g of NaCl in 100g of water at 80°C.


iv) Sulphur dissolved in CS2


v) Nitrogen in the soil.

 11

Radha prepared a solution which could be separated by filtration.

i) Name the type of solution.


ii) Is the solution transparent or opaque?


iii) Mention the nature of the solution.


iv) Mention the size of the solute particle.

 12


In the above case, Sekar observed that the water turned sweeter after sometime.


Explain the reason for the same.