" 12.Gold number is the index for "

select the correct statement (s) : A sol is prepared by addition of excess of AgNO_(3) solution in Kl solution . The charge likely to develop on colloidal particle is positive, the effects o pressure on physical adsorption is high if temperature is low, Ultracentrifugation process is used for preparation of colloids, Gold number is the index for extent of gold plating done.

Gold number gives

Gold number gives

Gold number gives

Gold number is the unit of :

Gold number gives:

Gold number is minimum for:

Gold number is the measure of the

the protective power of the lyophilic colloids es expressed in terms of gold number, a term introduced by Zsigmondy. Gold number is the number of mili - gram of the protective colloid which prevent the coagulation of 10 mL of red gold sol , when 1 mL of a 10 per cent solution of sodium chloride is added to it . thus smaller the gold number of lyophillic colloid, the greater is the protective power. gold number given an indication of : protective nature of colloids, purity of gold in suspension, the charge on a colloidal solution of gold, gram of gold per litre of solution.

Gold number is a measure of