Question

Which of the following methods is used for extracting metals from ores?
A. Reduction
B. Melting
C. Electrolysis
D. Both A and C

Answer 1

The natural rock which contains one or more valuable minerals is known as
ore. The ore can be mined, treated and sold for the profit in the market. Mainly through the
the process of mining and refining the ore is extracted.

Complete step by step answer:
Mining is the process of extraction of ores from the deeply buried minerals. The ores are
present in the deep underground layers of the earth crust in the abundance. The extraction
of the metals from their ores is essential. The finished metals are quite different from the
ores and the ores need to be refined before using them. The desired metals in the ore is
present along with the impurities known as the gangue. The purification of the ores is also
important.
The extraction of the ores occurs in the following steps:
1. Concentration of the ore.
2. Isolation of the concentrated ore from the metal.
3. Purification of the ore.

Reduction and electrolysis are the main methods through which the ore is extracted. In the
process of the reduction the ore is reduced to its corresponding metal in the presence of the
carbon atom while in the process of the electrolysis the electrolysis of the impure metal or
the ore is carried out in the presence of the electricity where the two half cells fi=unction
together and the two half cells are the anode and the cathode. The reduction takes place at
the cathode and oxidation takes place at the anode the pure metal gets deposited on the
cathode and the impure metal is obtained as the anode mud below the anode in the
electrolytic cell.
Thus the option D. Both A and B is the correct answer.

Note:
A salt bridge is used to separate the two half of the cells during the process of the
electrolysis, that is the cathode and the anode in the reduction and oxidation half of the
cells, the salt bridge prevents the mixing of the two solutions during the redox process
carried out for the extraction of the metals from its ores.