Question

diluting a pollutant over and over until it is very difficult to detect is known as which of these processes?
oxidation reaction
serial dilution
nuclear reaction
evaporation

Explanation:

Serial dilution is the process of repeatedly diluting a substance (like a pollutant) in sequence, reducing its concentration until it becomes hard to detect. Oxidation reactions involve chemical electron loss, nuclear reactions affect atomic nuclei, and evaporation is a phase change of a liquid to gas, none of which match the described process.

Answer:

B. serial dilution