Chemistry - Metallurgy Question with Solution | TestHub

Refractory used in furnaces are composed of oxides of$\mathrm{S}\mathrm{i},\mathrm{A}\mathrm{l},\mathrm{M}\mathrm{g }\mathrm{a}\mathrm{n}\mathrm{d }\mathrm{C}\mathrm{a}$these can withstand
high temperature.