Pure bauxite is the best raw material for the manufacture of high alumina refractories, in which maximum alumina content can be as high as _____________ percent?
(A) 55
(B) 70
(C) 80
(D) 90
Share this... |
Facebook
|
Twitter
|
Linkedin
|
Whatsapp
|
Your email address will not be published. Required fields are marked *