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प्रश्न
Answer the following question :
Name the process used for the enrichment of sulphide ore.
उत्तर
Froth flotation process is used for the enrichment of sulphide ore.
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संबंधित प्रश्न
Give appropriate scientific reasons for Zinc oxide can be reduced to zinc metal by using
carbon, but aluminium oxide cannot be reduced by a reducing agent
Give equation for the following conversion: Ferric oxide to iron.
Give equation for the following conversion: Aluminium to aluminium nitride.
Give the chemical name and formula of 'cryolite'
Write balanced equation for the following reaction:
Reduction of iron (III) oxide by carbon monoxide.
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.
Name the following:
The compound formed by the reaction between calcium oxide and silica.
Name the following :
A metal oxide that can be reduced by hydrogen
Give the equations for the reduction of copper oxide.
