Ores obtained from the Earth’s crust are always pure.

Zinc dust is used as a reducing agent in the manufacture of paints.

Malachite is an ore of copper with 58 percent copper concentration.

What is the process used to extract sodium from halide ores such as sodium chloride (NaCl)?

Copper is extracted from low grade copper ores.

What is the process used to recover the metal from its soluble complex obtained after leaching?

Where are the magnetic particles collected in concentration by electromagnetic separation?

Which of the following is a complex formed during the extraction of silver via leaching?