Advertisements
Advertisements
प्रश्न
Why are sulphide ores converted to oxide before reduction?
Advertisements
उत्तर
Sulphides are not easily reduced while oxides are easily reduced. Due to this, sulphides are first oxidised and then subjected to reduction.
APPEARS IN
संबंधित प्रश्न
Explain calcination with reactions.
Define Hydrometallurgy?
What is the process in which concentrated ore is reduced to the corresponding metal by heating at high temperature with a reducing agent?
(a) Polling
(b) Pyrometallurgy
(c) Hydrometallurgy
(d) Calcination
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 ?
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
Which one of the following oxidation state of Manganese is unstable?
(a) + 2
(b) + 4
(c) + 5
(d) + 7
Complete the given chemical equations
`F_2 + 2Cl^(-)`
What happens when HCl is added to MnO2? Write the equations involved
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.
Account for the following :
Reducing character decreases from SO2 to TeO2.
Which metal is also found in sea beds?
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?
