General Principles and Processes of Isolation of Elements
How many ores are sulphide ores from the given ores?
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The extraction of metal from the ore is :
The following flow chart represents the extraction of _______.
Metal oxide can be reduced by __________.
In order to obtain 1 tonne of aluminium, 4 tonnes of bauxite, 150 kg of sodium hydroxide and 600 kg of graphite is required. The aluminium compound in bauxite is aluminium oxide and the main impurity is iron (III) oxide, Aluminium is obtained by the electrolysis of aluminium oxide dissolved in cryolite.In construction work, why is the alloy of aluminium(duralumin) used rather than pure aluminium?
Explain with reasons:Carbon can reduce lead oxide but not aluminium oxide.
The ratio of Fe2O3 and Al by weight, in thermite is about:
What happens when : manganese dioxide is heated with aluminium powder ?