Question

The process of roasting of an ore is carried out in the [BHU 1999]
A) Absence of air B) Presence of air C) Limited supply of air D) None of these

Answer 1

The process of roasting of an ore is carried out in the-

Option A) Absence of air.

Hope it helps : )

Answer 2

Hi

Roasting of an ore is carried out B) in the presence of Air


In the absence of air Calcination is caused out .