Calcination is 'Heating of ore to high temperatures in limited supply of air or oxygen

True

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

False

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A
True

Calcination is a process in which concentrated ore is heated in a suitable furnace, generally much below its melting point in the limited supply of air or oxygen, which makes the ore porous and hydrated salts lose their water of Crystallization. For example

$C a C O_{3}$ $\to$ $C a O + C O_{2}$

$A l_{2} O_{3} .2 H_{2} O \to A l_{2} O_{3} + 2 H_{2} O$

If these reactions are not heated at or above thermal decomposition temperature the corresponding metal oxides cannot be formed.

Suggest Corrections

Similar questions

State True or False.

The process of heating concentrated ore to a high temperature in excess air is called Roasting. State whether it is true or false

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. In calcination, ore is heated strongly in the absence of air.

Q. Heating an ore in a limited supply of air or in the absence of air at a temperature just below its melting point is known as :

Q. Assertion :Roasting is a process in which the ore is heated strongly in absence of air. Reason: Concentration of sulphide ore is done by calcination.

Join BYJU'S Learning Program