Dust of pure _________ is used to cover the article to be treated for corrosion in the method of sherardising.
(a) Platinum
(b) Zinc
(c) Copper
(d) Barium
This question was posed to me in homework.
I want to ask this question from Ferrous Metals topic in division Air Conditioning, Thermal Insulation, Stones & Ferrous Metals of Construction & Building Materials