Advertisements
Advertisements
Question
Why are sulphide ores converted to oxide before reduction?
Advertisements
Solution
Sulphides are not easily reduced while oxides are easily reduced. Due to this, sulphides are first oxidised and then subjected to reduction.
APPEARS IN
RELATED QUESTIONS
Define Hydrometallurgy?
Which solution is used for the leaching of silver metal in the presence of air in the metallurgy of silver?
Reduction of metal oxide to metal becomes easier if the metal obtained is in liquid state. Why?
What is the role of zinc metal in the extraction of silver ?
Name the processes from which chlorine is obtained as a by-product.
MnO2 and Ca3(PO4)2 present in iron ore get reduced to Mn and P in the zone of _______.
(A) combustion
(B) reduction
(C) fusion
(D) slag formation
What happens when HCl is added to MnO2? Write the equations involved
What is the action of carbon on the following metal oxides:
Fe2O3 in the blast furnace
What is the action of carbon on the following metal oxides :
ZnO in the vertical retort furnace
An element X (molar mass = 60 g mol−1) has a density of 6.23 g cm−3. Identify the type of cubic unit cell, if the edge length of the unit cell is 4 ✕ 10−8 cm.
In the extraction of chlorine by electrolysis of brine ______.
Which of the following reactions is an example of autoreduction?
Brine is electrolysed by using inert electrodes. The reaction at anode is ______.
At temperatures above 1073 K coke can be used to reduce \[\ce{FeO}\] to \[\ce{Fe}\]. How can you justify this reduction with Ellingham diagram?
Which of the following reactions is an example of auto reduction?
