3. ‘Unreacted core model’ represents the reaction involving
A. combustion of coal particles
B. roasting of sulphide ores
C. manufacture of carbon disulphide from elements
D. none of these
Ans: B
A. combustion of coal particles
B. roasting of sulphide ores
C. manufacture of carbon disulphide from elements
D. none of these
Ans: B
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