

MCQOPTIONS
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1. |
Calcination is the process in which: |
A. | ore is heated above its melting point to expel \[{{H}_{2}}O\] or \[C{{O}_{2}}\] or \[S{{O}_{2}}\] |
B. | ore is heated below its melting point to expel volatile impurities |
C. | ore is heated above its melting point to remove S, As and Sb as \[S{{O}_{2}},\,\,A{{s}_{2}}{{O}_{3}}\] and \[S{{b}_{2}}{{O}_{3}}\] respectively |
D. | ore is heated below its melting point to expel \[{{H}_{2}}O\] or \[C{{O}_{2}}\] |
Answer» E. | |