Advertisements
Advertisements
Question
In the extraction of aluminium: Draw the diagram for the extraction of aluminium.
Solution
Extraction of aluminium:
APPEARS IN
RELATED QUESTIONS
In the electrolytic refining of a metal M, what would you take as the anode, the cathode and the electrolyte?
In the extraction of aluminium Write the cathode reaction in electrolytic reduction of alumina.
In the extraction of aluminium: Why is it necessary to replace anodes time to time?
Which metal becomes black in the presence of hydrogen sulphide gas in air?
Give two uses of bronze.
Name one metal which is extracted by reduction with heat alone.
Name the chemical compound which is electrolysed in molten state to obtain aluminium metal. Which gas is evolved during this process?
Name the chemical compound which is electrolysed in molten state to obtain sodium metal. Which gas is produced in this process?
Which of the following reactants are used to carry out the thermite reaction required for welding the broken railway tracks?
(a) Al2O3 + Fe
(b) MnO2 + Al
(c) Fe2O3 + Al
(d) Cu2O + Fe
Metals X and Y can be recovered from the anode mud left behind after the electrolytic refining of copper metal. The coins made of metal X look new even after several years of use but the coins made of metal Y lose their shine gradually and get blackened soon. When metal X is alloyed with a small amount of metal Y, it becomes hard and hence suitable for making ornaments. What are metals X and Y? Also state the colour of metal X.
Give the principles of the froth floatation process.
Define the term : Gangue
Name the following:
A steel grey coloured solid non-metal.
Explain in brief types of extraction of highly reactive metals according to their reactivity.
Explain in brief types of extraction of moderately reactive metals according to their reactivity.
Explain Bayer’s process of concentration of bauxite with a chemical equation.
The highly reactive metals like Sodium, Potassium, Magnesium, etc. are extracted by the ____________.
2 mL each of concentrated HCl, HNO3 and a mixture of concentrated HCl and concentrated HNO3 in the ratio of 3 : 1 were taken in test tubes labelled as A, B and C. A small piece of metal was put in each test tube. No change occurred in test tubes A and B but the metal got dissolved in test tube C respectively. The metal could be
- Given below are the steps for extraction of copper from its ore. Write the reaction involved.
- Roasting of copper (I) sulphide
- Reduction of copper (I) oxide with copper (I) sulphide.
- Electrolytic refining
- Draw a neat and well labelled diagram for electrolytic refining of copper