Worksheet based on Application of Colloids





Colloids are used in our daily life as well as in industrial sector. Some of the uses of collids are lsited below:

1. Colloidal solution are used in-order to prepare various medicines. Eg- Cold Liver Oil

2. Colloids are also used to prepare paints.

3. Large food items which we in our daily life are colloidal in nature.

4. Colloids are also used for water purification .

In this article you can find some question related to “Colloids and their uses” and their answers:

Questions:

1. Which of the following colloidal solution is commonly used as germ killer?

(a)    Colloidal sulphur

(b)   Colloidal gold

(c)    Colloidal silver

(d)   Colloidal antimony

 

2. Colloidal solution commonly used in the treatment of eye disease is:

(a)    Colloidal silver

(b)   Colloidal gold

(c)    Colloidal antimony

(d)   Colloidal sulphur

 

3. The bleeding of a wound is stopped by the application of ferric chloride because:

(a)     Blood starts flowing in the opposite direction

(b)   Ferric chloride seals the blood vessels

(c)    Blood reacts and a solid is formed which seals the blood vessels

(d)   Blood is coagulated and the blood vessels are sealed

 

4. Medicines are more effective, if they are used in:

(a)    Solution state

(b)   Gaseous state

(c)    Colloidal state

(d)   Solid state

 

5. Artificial rain is caused by spraying:

(a)    Neutral charged colloidal dust over a cloud

(b)   Similar charged colloidal dust over a cloud

(c)    Both (a) & (b)

(d)   Opposite charged colloidal dust over a cloud

 

6. Which of the following colloidal solution is used in photography ?

(a)    Colloidal silver bromide

(b)   Colloidal gold

(c)    Colloidal silver

(d)   Colloidal sulphur

Answers:

1.(a)     2. (c)     3. (d)     4. (c)     5. (d)     6. (a)



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