Topic: Surface Chemistry

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Q:

(a) :  A
(b) :  B
(c) :  C
(d) :  D
Answer:  D
Explanation:  

Linseed oil, lanolin and Glycogen attract water hence contain a hydrophobic structure but rubber does not attract water and does not contain a hydrophobic structure.


Q:

(a) :  A
(b) :  B
(c) :  C
(d) :  D
Answer:  C
Explanation:  

The amount of electrolyte required to coagulate a fixed amount of a sol depends upon the valency of flocculating ion.


Q:

(a) :  A
(b) :  B
(c) :  C
(d) :  D
Answer:  D
Explanation:  

Absorption, Tyndall effect and flocculation all are related to sol but paramagnetism is not represented by sol.


Q:

(a) :  A
(b) :  B
(c) :  C
(d) :  D
Answer:  A
Explanation:  

Egg is a calloid of solid and liquid; Ruby glass is a colloid of solid and solid. Milk is a colloid of liquid and liquid but chlorophyll is a complex of magnesium.


Q:

(a) :  A
(b) :  B
(c) :  C
(d) :  D
Answer:  C
Explanation:  

The colloidal solution of liquid in liquid is called emulsion not gel.


Q:

(a) :  A
(b) :  B
(c) :  C
(d) :  D
Answer:  D
Explanation:  

The ability of an ion to bring about coagulation of a given calloid depend upon both the magnitude and sign of its charge.


Q:

(a) :  A
(b) :  B
(c) :  C
(d) :  D
Answer:  D
Explanation:  

Traces of electrolytes are essential for stabilising the sales hence for sales destruction addition of electrolytes are required.


Q:

(a) :  A
(b) :  B
(c) :  C
(d) :  D
Answer:  A
Explanation:  

Lyophillic means liquid loving hence hydration is contributed toward the extra stability of lyophillic colloids.


Q:

(a) :  A
(b) :  B
(c) :  C
(d) :  D
Answer:  C
Explanation:  
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