The process in which ores are changed into oxides by heating strongly in limited air is known as:

Q. The process in which carbonate ores are changed into oxides by heating strongly in limited air is known as ________.

Q.

State whether the following statement is true or false.

"Carbonate ores get changed into oxides by heating strongly in limited air. This process is known as calcination."

Q. The process in which carbonate ores are changed into oxides by heating strongly in absence of air, is:

Q. Sulphide ores are converted into oxides by heating them strongly in excess of air. This process is known as

Q. The sulphide ores are converted into oxides by heating strongly in the presence of excess air. This process is known as:
(correct answer +1, wrong answer -0.25)