Gold number is the measure of protective power of a lyophobic colloid.(A) True(B) False

(B) False

The statement is not accurate. The "gold number" is not a measure of the protective power of a lyophobic colloid. Instead, it is a measure of the effectiveness of a protective colloid in stabilizing a lyophobic colloid.

In colloidal chemistry, a lyophobic colloid is a type of colloid where the dispersed phase (particles) has little affinity for the dispersing medium (solvent). A protective colloid is an additive that is added to the lyophobic colloid to prevent its coagulation or precipitation. The gold number is used to quantify the protective power of the protective colloid. It represents the minimum amount of the protective colloid needed to prevent the coagulation of a specific amount of a lyophobic colloid.

In summary, the gold number measures the effectiveness of a protective colloid in preventing the coagulation of a lyophobic colloid, rather than the protective power of the colloid itself.