The simultaneous outcome of internal liquid from gels is called:

(a) synerisis                          (b) thixotropy

(c) swelling                           (d) none of these

Concept Questions :-

Colloidal Solution
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The charge on As2S3 sol is due to the adsorption of:

(a) H+                              (b) OH-

(c) O2-                              (d) S2-

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Pd can absorb 900 times its volume of hydrogen. This called:

(a) absorption

(b)adsorption

(c)occlusion

(d) both (b) and(c)

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The process of froth flotation and chromatography are based on:

1. emulsification

2. adsorption

3. absorption

4. either of them

Concept Questions :-

Adsorption and Absorption
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The Brownian motion is due to:

(1)temperature fluctuations within the liquid phase

(2)attraction and repulsion between charges on the colloidal particles

(3)impact of the molecules of the dispersion medium on the colloidal particles

(4)convective currents

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The phenomenon in which adsorption and absorption takes place simultaneously is called:

(a) desorption                        (b) sorption

(c) both (a) and (b)                (d) none of these

Concept Questions :-

Adsorption and Absorption
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Cloud bursts due to:

(a) attraction towards the electrical charges on the earth

(b) large amount of water present in the cloud

(c) dense clouds are present in the upper atmosphere

(d) mutual discharge of oppositely charged clouds resulting in the coagulation

Concept Questions :-

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Peptization is a process of:

(a)precipitating collloidal particals

(b) purifying colloidal particals

(c) dispersing the precipitate into colloidal state

(d) none of the above

Concept Questions :-

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Which acts as poison for Pd-charcoal in lindlar's catalyst ?

(a) BaSO4

(b) Quiniline

(c) Both (a) and (b)

(d) None of these

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Which electrolyte is least effective in causing coagulation of+ve ferric hydroxide sol?

(a)KBr

(b)K2SO4

(c)K2CrO4

(d)K2[Fe(CN)6]

 

Concept Questions :-

Colloidal Solution
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