Question

Copper can be extracted from:
A) Kupfer-nickel
B) Dolomite
C) Galena
D) Malachite

Answer 1

The answer is based on the concept of the metal ores where the required metal is obtained from and these ores are concentrated in the Earth’s crust where the ore can have direct metal available in it or also in combination with other compounds.

Complete step by step answer:
- In the lower classes of chemistry, we have studied about the concepts of extraction of the metal from its ore and are also familiar with the chapters which give the details about the processes used for the extraction process.
- Now, we shall see the occurrence of copper and how it can be extracted.
- Copper is a very useful metal which belongs to the group of transition metals and it is having the atomic number 29.
- To know the correct answer, let us see in detail about each option given and understand the base of it.
A) Kupfer – nickel is nothing but a name for the alloy of copper which contains nickel and strengthening elements like iron and manganese but since this alloy has precious metals and the extraction of copper from this gets difficult.
B) Dolomite is the combination of calcium and magnesium carbonates and therefore does not have any copper in it as an ore.
C) Galena is the name of the ore which has lead that is having the formula$PbS$and hence does not have copper in it.
D) Malachite has the formula $CuC{{O}_{3}}.Cu{{(OH)}_{2}}$ and here the ore is rich in copper and can be easily extracted. The correct option is option “D” .

Note: The important thing to be noted while solving such questions is that you should be thorough with some of the basic metal ores and the names given to that ore and also about the percent occurrence of the metals in that ore.