Which of the Following Can Be Extracted by Hydrometallurgical Reduction

question 63

Multiple Choice

Which of the following can be extracted by hydrometallurgical reduction of their ions with hydrogen? Consult a table of standard potentials.

• A) Ni
• B) Fe
• C) Ag
• D) Zn
• E) Pb

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Definitions:

Ammonia

A colorless gas with a pungent smell, NH3, used as a nitrogen source in fertilizers and as a cleaning agent.

Solar Radiation

The electromagnetic energy emitted by the sun, which reaches the earth and is a key factor in climate and weather patterns, as well as photosynthesis.

Reflect

To throw back light, heat, sound, or any form of energy without absorbing it.

Snow

Precipitation in the form of ice crystals that forms in clouds when temperatures are below freezing and falls to the ground, accumulating as a white, fluffy layer.