The ease of adsorption of the hydrated alkali metal ions on an i

Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.
Advertisement

 Multiple Choice QuestionsMultiple Choice Questions

151.

Adsorption of a gas follows Freundlich adsorption isotherm. x is the mass of the gas adsorbed on mass m of the adsorbent. The plot of log xm versus log p is shown in the given graph. xm is proportional to :

  • p3/2

  • P3

  • P2

  • P2/3


152.

A gas undergoes physical adsorption on a surface and follows the given freundlich adsorption isotherm equation xm= kp0.5. Adosrption of the gas increases with:

  • increase in P and decrease in T

  • Decrease in P and decrease in T

  • Increase in P and Increase in T

  • Decrease in P and Increase in T


153.

Match the catalysts (colum I) with products (column II).
Catalyst - Column I Products - Column II
A. V2O5 (i) Polyethylene
B. TiCl4/ Al(Me)3 (ii) Ethanal
C. PdCl2 (iii) H2SO4
D. Iron oxide (iv) NH3

  • A - iii; B - i; C - ii; D - iv

  • A - ii; B - iii; C - i; D - iv

  • A - iv; B - iii; C - ii; D - i

  • A - iii; B - iv; C - i; D - ii


154.

The aerosol is a kind of colloid in which:

  • Solid is dispersed in gas

  • liquid is dispersed in water

  • gas is dispersed in liquid

  • gas is dispersed in solid


Advertisement
155.

The correct option among the following is :

  • Colloidal particles in lyophobic sols can be precipitated by electrophoresis.

  • Brownian motion in colloidal solution is faster if the viscosity of the solutions is very high.

  • Addition of alum water makes it unfit for drinking.

  • Colloidal medicines are more Effective because they have small surface area


156.

Fog is a colloidal solution of 

  • Gas in liquid

  • Solid in gas

  • Gas in gas

  • Gas in gas

1212 Views

157.

Which property of colloidal solution is independent of charge on the colloidal particles?

  • Coagulation

  • Electrophoresis

  • Electroosmosis

  • Tyndall effect

1682 Views

158.

Which property of colloids is not dependent on the charge on colloidal particles?

  • Coagulation

  • Electrophoresis

  • Electro-osmosis

  • Electro-osmosis

581 Views

Advertisement
Advertisement

159.

The ease of adsorption of the hydrated alkali metal ions on an ion exchange resins follows the order

  • Li+ > K+ >Na+> Rb+

  • Rb+ < K+ < Na+ < Li+

  • K+ >Na+>  Rb+ > Li+

  • K+ >Na+>  Rb+ > Li+


B.

Rb+ < K+ < Na+ < Li+

Ease of adsorption of the hydrated alkali metal ions on an ion-exchange resin decreases as the size of alkali metal ion increases.

since, the order of the size of alkali metal ions

Li+ < Na+ < K+ < Rb+

Thus,  the ease of adsorption follows the order

Rb+ < K+ < Na+ < Li+

1024 Views

Advertisement
160.

The protecting power of lyophilic colloidal sol is expressed in terms of 

  • Coagulation value

  • Gold number

  • Critical micelle concentration

  • Critical micelle concentration

449 Views

Advertisement