Decomposition of hydrogen peroxide is retarded in the presence of________.

(a)

alcohol

(b)

glycerine

(c)

MnO₂

(d)

Mo

The emulsifying agent used in O/W type is _______.

(a)

lamp black

(b)

alcohols

(c)

gums

(d)

heavy metal salts of fatty acids

Emulsifying agent is used for________.

(a)

precipitation of an emulsion

(b)

coagulation of an emulsion

(c)

stabilization of an emulsion

(d)

none of these

The colloid used for stomach disorder is_______.

(a)

colloidal silver

(b)

colloidal antimony

(c)

colloidal gold

(d)

milk of magnesia

Argyrol is_______.

(a)

colloidal silver

(b)

colloidal antimony

(c)

colloidal gold

(d)

milk of magnesia