Metallurgy Principles and Processes
Chemistry ⇒ Metals and Non-metals
Metallurgy Principles and Processes starts at 9 and continues till grade 12.
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Describe the principle of froth flotation process.
Describe the process of electrolytic refining of copper.
Describe the role of flux in metallurgy.
Explain the difference between roasting and calcination.
Explain why aluminium is extracted from bauxite by electrolysis and not by reduction with carbon.
Explain why carbon is used as a reducing agent in the extraction of some metals.
Explain why highly reactive metals cannot be extracted by reduction with carbon.
A sample of ore contains 40% metal. If you have 500 g of ore, how much metal is present?
Which of the following is a carbonate ore?
(1) Malachite
(2) Galena
(3) Haematite
(4) Bauxite
Which of the following is a gangue?
(1) Iron
(2) Sand
(3) Copper
(4) Aluminium
Which of the following is a magnetic ore?
(1) Magnetite
(2) Bauxite
(3) Malachite
(4) Galena
Which of the following is a method of refining metals?
(1) Distillation
(2) Electrolytic refining
(3) Liquation
(4) All of the above
Fill in the blank: The chemical formula of haematite is __________.
Fill in the blank: The ore of aluminium is __________.
Fill in the blank: The process of heating an ore below its melting point in the absence of air is called __________.
Fill in the blank: The process of purifying impure metal by using electricity is called __________ refining.
Is the following statement true or false? 'Froth flotation is used for the concentration of sulphide ores.'
State whether the following statement is true or false: 'All ores are minerals, but all minerals are not ores.'
State whether the following statement is true or false: Calcination is done in the absence of air.
State whether the following statement is true or false: 'Electrolytic refining is used to purify metals like copper and zinc.'
