Question
Chemistry Question on General Principles and Processes of Isolation of Elements
Calcination is the process of heating the ore
A
In a blast furnace
B
In absence of air
C
In presence of air
D
None of these
Answer
In absence of air
Explanation
Solution
Calcination is the heating of the ore in a suitable furnace in absence of air much below its melting point to cause decomposition and elimination of volatile products. PbCO3−>PbO+CO2 The process is generally applied to hydrated oxide or carbonate ores.