Which of the following imparts a deep blue color to glass?

Which of the following imparts a deep blue color to glass? 

(1) Cobalt oxide 

(2) Cupric oxide 

(3) Ferrous oxide 

(4) Nickel oxide 


Answer: (4) Glass coloring and color marking may be obtained by addition of coloring ions, by precipitation of nanometer-sized colloids (so-called striking glasses such as “ruby gold” or red “selenium ruby”), by colored inclusions (as in milk glass and smoked glass), by light scattering (as in phase-separated glass), by dichroic coatings, by colored coatings. Nickel oxide produces deep blue glass. 

Which of the following imparts a deep blue color to glass?   (1) Cobalt oxide   (2) Cupric oxide   (3) Ferrous oxide   (4) Nickel oxide


Previous Post Next Post