Discussion
Galvanized metal is preferable for garbage storage because of its ............
Answer: B
Galvanised metal is used for its high corrosion resistance.
Galvanising coats steel with zinc. Zinc forms a protective film and corrodes in preference to the steel underneath, so galvanised bins resist rust from wet, acidic and salty garbage and last much longer.
Galvanising does not kill pathogens, and garbage bins are not under pressure or exposed to high temperatures, so those properties are not the reason for using it.
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