Related Questions

Galvanic corrosion can not be prevented by
A Cathodic protection
B Anodic protection
C Usage of largest possible anodic area
D Any one of these
Corrosion involves exchange of electrons in __________ corrosion.
A Chemical
B Electrochemical
C Both A & B
D Neither A nor B
To control corrosion, concrete with _________ is used.
A Low permeability
B Low thermal coefficient
C More cement content
D More coarse aggregates
Which of the following pipes is least corrosion resistant?
A Brass
B Mild steel
C Cast iron
D Wrought iron
In low carbon steels, ________ raises the yield point and improves the resistance to atmospheric corrosion.
A Sulphur
B Phosphorus
C Manganese
D Silicon
Stainless steel resists corrosion due to
A Carbon
B Sulphur
C Vanadium
D Chromium
Corrosion of well pipes may not be reduced by
A reducing the draw down and the pumping rate
B reducing the flow velocity
C using thicker pipes
D using screens having larger area of openings
Extent of corrosion in the underground metal work depends upon
A amount of moisture
B type of metals
C type of soil chemicals
D all above factors
Corrosion rate can not be lowered by reducing the __________ of the corroding medium.
A Concentration
B Velocity
C Temperature
D None of these
In connection with corrosion of metals, passivation is the process that
A Intensifies deterioration
B Changes the composition of the metal
C Inhibits further deterioration
D None of these

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