General Principles and Processes of Isolation of Elements
Which of the following is correct processes ?
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What happens when sulphur dioxide is passed through an aqueous solution of Fe(III) salt?
Assertion :Sulphide ores are converted to oxides before reduction. Reason :Oxides are easier to reduce.
When is electrolytic reduction applied for getting a metal?
The reducing agent used in thermite process is ___________.1. Carbon2. Aluminium3. Iron4. Sodium
Aluminium is extracted from its chief ore, bauxite. The ore is first purified and then the metal is extracted from it by electrolytic reduction.Write equations for the reactions which takes place at the anode during the extraction of aluminium by the electrolytic process.
Which method do you suggest for extraction of high reactivity metals? Why?
Which of the following is a physical mean for concentration of ore?
What happens when iron(III) oxide is heated with aluminium powder ?