Materials and Construction
Galvanising (i.e., zinc coating) of steel sheets is done to

Neither A nor B
Protect the base metal by cathodic protection
Prevent its rusting by contact with corrosive atmosphere
Both A & B

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Materials and Construction
Mild steel is

Very poor in strength & ductility
Highly resistant to corrosion (as much as stainless steel)
A high carbon steel (0.5 to 1.5% carbon)
A low carbon steel (0.05 to 0.3% carbon)

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