General metallurgical process are given below. Arrange them in correct sequence.
(1) conversion of ore to oxide.
(2) refining
(3) dressing of ore
(4) extraction of metal
(5) concentration of ore

Options

A. 51423
B. 35142
C. 45321
D. 25341

Explanation

To arrange the general metallurgical processes in the correct sequence, we follow these steps:

1. **Dressing of Ore**: This is the initial step where the ore is prepared for further processing. It involves the removal of impurities and the separation of valuable minerals from the waste material.

2. **Concentration of Ore**: After dressing, the ore is concentrated to increase the percentage of the desired metal. This can involve various methods such as froth flotation, magnetic separation, or gravity separation.

3. **Conversion of Ore to Oxide**: Once the ore is concentrated, it is then converted into an oxide form. This is typically done through processes like roasting or calcination, depending on the type of ore.

4. **Extraction of Metal**: After conversion to oxide, the metal is extracted from its oxide form. This can involve reduction processes using carbon or other reducing agents.

5. **Refining**: Finally, the extracted metal is refined to remove any remaining impurities, resulting in pure metal.

Putting these steps together, the correct sequence is:
(3) Dressing of Ore → (5) Concentration of Ore → (1) Conversion of Ore to Oxide → (4) Extraction of Metal → (2) Refining.

Thus, the final order is: **3, 5, 1, 4, 2**.