The sulphate of _________________ is used with zinc paint so as to eliminate the risk of discoloration of a lead drier.
(a) Manganese
(b) Magnesium
(c) Potassium
(d) Calcium
I have been asked this question during an internship interview.
Origin of the question is Types of Paints topic in section Painting, Varnishing, Distempering, etc of Construction & Building Materials