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Portable water pipelines of lead are replaced by various types of steels, due to _____

(a) cheaper cost

(b) more availability

(c) contamination caused by lead

(d) shiny appearance

I had been asked this question in my homework.

This intriguing question comes from Corrosion Damage topic in section Corrosion Principles of Corrosion Engineering

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Correct option is (c) contamination caused by lead

The explanation: Lead exposure is a public health hazard as it causes development effects in infants and young children. Lead contamination in drinking water is the most contributor of lead exposure to humans. To avoid exposure, various steels such chromium steels and coated steels are being used for this purpose.

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