Surface Chemist...

When a graph is plotted between log x/m and log p, it is straight line With an angle 45° and intercept 0.3010 on y-axis. If initial pressure is 0.3 atm, what will be the amount of gas adsorbed per gm of adsorbent :           

Which of the following statements about physical adsorption is not  correct ?

Following is the variation of physical adsorption with temperature:

Finally divided catalyst has greater surface area and has greater catalytic activity then the compact solid. If a total surface area of 6291456 cm is required for adsorption of gaseous reaction in a catalysed reaction, then how many splits should be made of cube exactly 1 cm in length.           

Which of the following is not characteristic of chemisorption?           

A colloidal solution can be purified following the method of           

Gold number of a lyophilic sol is such property that:           

100 mL of a colloidal solution is completely precipitated by addition of 5 mL of 1 M Nacl solution . Calculate the coagulation value of Nacl .       

At CMC, the surfactant molecules :           

Some type of gels like gelatin loose water slowly. The process is known as :           

During the adsorption of Krypton on activated charcoal at low temperature 

Size of colloidal particles may range from           

Select correct statement (s) :           

Gold number of haemoglobin is 0.03. Hence, 100 mL of gold sol will require haemoglobin so that gold is not coagulated by 10 mL of 10% NaCl solution:    

Which one of the following statements is correct:           

What can adsorb larger volume of hydrogen gas :           

Statement-1 : All colloidal dispersions give very low osmotic pressure and show very small freezing point depression or boiling pointelevation.

Statement-2 : Tydall effect is due to scattering of light from the surface of colloidal particles.

Statement-1 : The Brownian movement is due to the bombardment of   collodial particles by the molecules of dispersion medium which are in the constant motion like molecules in a gas.

Statement-2 :Brownian movement provides a visible proof of the random kinetic motion of molecules in a liquid.        

Statement-1: In the coagulation of negatively charged arsenic sulphide soil, the coagulating power decreases in the order, Al³⁺ > Ba²⁺ > Na⁺.

Statement-2 : Generally greater the valence of coagulating ion, the  greater is its power of coagulation.

Assertion: Isoelectric point is pHpH at which colloidal can move towards either of electrode.
Reason: At isoelectric point coolidal particles becomes electrically netural .