Question

Common method of extraction of metals from oxide ore involves:
A. Reduction of aluminium.
B. Reduction with carbon
C. Reduction with hydrogen
D. Electrolytic method

Answer 1

Hint: We know that ores are special types of minerals from which metals can be extracted. Oxide ores are ores in which metals are in their oxidised form. Some of the examples of oxide ores are chromium, magnetite, hematite, cassiterite and many more.

Complete answer:
As we know that oxide ores contain oxygen in them so first of all we have to remove the oxygen from the ore in other words we have to reduce the oxide ores. If a metal is less reactive than carbon than the oxide ore of the metal can be reduced with the help of carbon. The carbon removes the oxygen by forming carbon monoxide or carbon dioxide and the metal is displaced. Metals like zinc, copper, iron and silver are less reactive than carbon. So, the oxide ores of the metals zinc, copper, iron and silver can be reduced with carbon. Haematite and magnetite are the oxide ores of iron. Zincite is an example of oxide ore of zinc. So, from the above explanation it is clear to us that the common method of extraction of metals from oxide ore involves reduction with carbon.

Hence, the correct answer of the given question is option: B. Reduction with carbon.

Note:
Always remember the fact the oxide ores of the metals which are less reactive than carbon can be reduced by carbon to produce carbon dioxide or carbon monoxide. Once the oxide ore is converted to the metal, we have to refine the metal to get pure metal without any impurity.