Advertisements
Advertisements
प्रश्न
Answer the following question with respect by hydrogen :
Explain why powdered coke is sprinkled over than electrolytic mixture.
Advertisements
उत्तर
Powdered coke is sprinkled over the surface of the electrolytic mixture for the following reasons:
- To reduce heat loss by radiation
- To prevent burning of the anode
APPEARS IN
संबंधित प्रश्न
An element L consists of molecules.
When L is heated with iron metal, it forms a compound FeL. What chemical term would you use to describe the change undergone by L?
Give equation for the following conversion: Ferric oxide to iron.
Name oxide of one metal which is reduced by (give equation): Reduction with heat alone
For the reaction of a metal oxide. Suggest a reducing agent other than carbon
what is the function of cryolite in the extraction of aluminium, other than acting as a solvent for bauxite?
Name a non-metallic element which has a metallic lustre
Write balanced equation for the following reaction:
Reduction of copper oxide by hydrogen.
Write balanced equation for the following reaction:
Reduction of iron (III) oxide by carbon monoxide.
4 tones of bauxite, 150 Kg of sodium hydroxide and 600 Kg of graphite.
The aluminium compound in bauxite is aluminium oxide and the main impurity is iron (II) oxide. Aluminium is obtained by the electrolysis of aluminium oxide dissolved in cryolite.
(a) When bauxite is treated with sodium hydroxide solution, what happens to:
(i) the aluminium oxide?
(ii) The iron (III) oxide?
Complete the following by selecting the correct option from the choices given :
The diavalent metal whose oxide is reduced to metal by electrolysis of its fused salt is ________
