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Which bacteria results in the corrosion of iron and steel pipes embedded in soil?

(a) Escherichia coli bacteria

(b) Bacterium coli bacteria

(c) Iron bacteria

(d) Sulphur bacteria

The question was asked during an interview.

This intriguing question originated from Biological Characteristic of Water in portion Quality of Water of Environmental Engineering

1 Answer

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Best answer
The correct choice is (d) Sulphur bacteria

The explanation: Sulphur bacteria cause the corrosion of iron and steel pipes embedded in soil. They are both aerobic and anaerobic and are more destructive in marshy or clay soils where anaerobic conditions prevails.

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