Red Seal Plumbing Practice Exam

Question: 1 / 400

The corrosive effects of ____ can cause pitting in a pipeline.

chlorine

carbon dioxide

oxygen

Oxygen can cause pitting in a pipeline through corrosion as it reacts with metals in the pipeline, leading to the formation of pits and potentially weakening the structure. While chlorine, carbon dioxide, and hydrogen sulfide can also have corrosive effects, they do not specifically cause pitting in pipelines like oxygen does. Additionally, chlorine and carbon dioxide are gases and are not typically found in pipelines, and hydrogen sulfide requires moisture or water to cause significant corrosion. Therefore, C is the most accurate answer.

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hydrogen sulfide

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