Which of the Following Metals,Ag,Zn,Cu,Ni,Au,Pt,Sn,cannot Be Extracted by Hydrometallurgical Reduction

question 96

Multiple Choice

Which of the following metals,Ag,Zn,Cu,Ni,Au,Pt,Sn,cannot be extracted by hydrometallurgical reduction of their ions with hydrogen?

• A)Au, Pt
• B)Ag, Au, Pt
• C)Zn, Ni, Au
• D)Zn, Ni, Sn
• E)Ag, Cu, Au, Pt

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Definitions:

Electroencephalograph (EEG)

A device used to record the electrical activity of the brain by placing electrodes on the scalp, used in diagnosing conditions and studying brain functions.

Sleep Spindle

A burst of oscillatory brain activity visible on an EEG that occurs during stage 2 of sleep as a representation of the brain's inhibition of process stimulation.

Theta Waves

Brainwave patterns associated with stages 1-2 of sleep, meditation, and creativity, typically indicating a state of somnolence or the initial stages of sleep.

Electroencephalograph (EEG)

An Electroencephalograph (EEG) is a device used to record the electrical activity of the brain to help diagnose conditions affecting the brain.