Advertisements
Advertisements
प्रश्न
Name the following:
The compound formed by the reaction between calcium oxide and silica.
उत्तर
Calcium silicate (slag)
APPEARS IN
संबंधित प्रश्न
Give reason for the following:
Carbon anodes are used in the electrolytic extraction of aluminium.
Give equation for the following conversion: Aluminium hydroxide to aluminium oxide.
Give equation for the following conversion: Aluminium to aluminium nitride.
Name oxide of one metal which is reduced by (give equation): Reduction with heat alone
Name a non-metallic element which is a conductor of electricity.
What is the type of bonding expected in a metallic chloride?
If fused metallic chloride is electrolyzed, at which electrode would the metal be obtained?
In order to obtain one tone of aluminium, the following inputs are required:
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.
(i) Write the formula of cryolite.
(ii) Write down the word which correctly completes the following sentence.
"By dissolving aluminium oxide in cryolite, a ______ (conducting / non- conducting) solution is produced.
(iii) Why so much graphite required for this electrolytic process.
(iv) Write the equation for the reaction which takes place at cathode.
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 ________
Give the equations for the reduction of copper oxide.
