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:

Autopsy

A post-mortem examination of a body to determine the cause of death or disease, performed by a pathologist.

Retreatment

The act of treating a medical or dental condition again after an initial treatment, often because the first treatment was not completely successful.

Rheumatoid Arthritis

An autoimmune disorder that primarily affects joints, causing inflammation, pain, and deformity.

Pathology

The medical specialty that focuses on determining the cause and nature of diseases by examining body tissues and bodily fluids.