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.
A
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
B
the effects o pressure on physical adsortion is high if temperature is low
C
Ultracentrifugation process is used for pegaration of colloids
D
Gold number is the index for extent of gold plating done
