How to choose a physical method in enriching of the ore?

What is the role of washing in enriching the ore?

Where do we use handpicking and washing methods in our daily life? Give examples. How do you correlate these examples with enrichment of ore?

P: Extraction of the metal from Its ores depends on the physical property of the ore. Q: Concentration of the ore depends on the reactivity of the metal.

Which one of the following is not a method of concentration of ore

When do we use magnetic seperation method for concentration of an ore? Explain with an example.

Which method is most suitable to enrich the sulphide ores ?

How do biofertilisers enrich the fertility of the soil?

The method suitable for concentration of the sulphide ores is