Purification And Characterisation Of Organic Compounds Question 172
Question: Calcination is the process in which:
Options:
A) ore is heated above its melting point to expel $ H_2O $ or $ CO_2 $ or $ SO_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 $ SO_2,As_2O_3 $ and $ Sb_2O_3 $ respectively
D) ore is heated below its melting point to expel $ H_2O $ or $ CO_2 $
Show Answer
Answer:
Correct Answer: D
Solution:
[d] Calcination is a process of heating a substance to a high temperature but below the melting or fusion point, causing loss of moisture, reduction or oxidation and dissociation into simpler substances.
BETA
