Passing Arsenic Contaminated Water Through a Long Pipe Filled with Sand

question 54

Multiple Choice

Passing arsenic contaminated water through a long pipe filled with sand and iron powder leads to removal of the arsenic by

• A)a physical change.
• B)an oxidation-reduction reaction.
• C)ion exchange.
• D)filtering out the suspended arsenic particles.
• E)only a and b

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Definitions:

Nuclear Spin States

The quantum mechanical states related to the intrinsic angular momentum (spin) of nuclei, which can influence the magnetic properties and behavior of atoms in a magnetic field.

90 MHz

Frequency commonly associated with the radio frequency range, specifically within the VHF band.

Chemically Equivalent

Describes atoms or groups in a molecule that are identical in their chemical environment, often resulting in indistinguishable spectroscopic signals.

Diastereotopic

Describes hydrogen atoms (or groups) in a molecule that are not equivalent in the three-dimensional space, causing different chemical shifts in NMR spectroscopy.