CORROSION TECHNICIAN EXAM
2026/2027 WITH 120 QUESTIONS AND
WELL-VERIFIED CORRECT
ANSWERS | ALREADY GRADED A+ |
GUARANTEED PASS | CORROSION
TECHNICIAN PRACTICE EXAM
When corrosion rates are __________ or ___________, long-term projections of
corrosion damage are possible. - ANSWER-Linear, decrease with time
When corrosion rates ______________, it is more difficult to predict long-term
corrosion. - ANSWER-Increasing with time
General attack corrosion is usually measured in terms of - ANSWER-Penetration
rates per unit of time in millimeters per year or mils per year
Experimental measurement of general attack corrosion is usually made by
measuring ________________ and calculating ________________. - ANSWER-
Weight loss, the equivalent loss of metal thickness
,_________ and _____________ steels perform well in a wide variety of
environments, including, atmospheric pressure, immersion in natural waters and
many chemicals, and underground. - ANSWER-carbon, low-alloy steels
True or false? Aluminum and aluminum alloys may be used where localized
corrosion does NOT occur. - ANSWER-True
Rates of uniform corrosion of aluminum can be very high in ______________
environments. - ANSWER-alkiline
True or false? Protective coatings are particularly effective in controlling uniform
corrosion. - ANSWER-True
____________ or ________________________ repair can stop the attack before it
progresses far enough to cause a significant loss of material. - ANSWER-
recoating, local coating
__________________________ is a method which interferes with the flow of the
current in the electrochemical cell - ANSWER-cathodic protection
________________ can be used in underground or emersion situations. -
ANSWER-cathodic protection
_________________________________ are low-alloy steels formulated
specifically to form tightly adherent, dense corrosion products that inhibit
corrosion in some atmospheric environments. - ANSWER-weathering steels
, _______________________, unlike general corrosion, occurs at discrete sites on a
metal surface. - ANSWER-localized corrosion
_____________________ is a deep, narrow corrosive attack which often cause
rapid penetration of the substrate thickness. - ANSWER-pitting
_________________________ is characterized by corrosive attack in a localized
region surrounded by corrosion free surfaces, or surfaces that are attacked to a
much lesser extent. - ANSWER-pitting corrosion
Very often, a local cell is set up between the interior of the pit and the external
surface. The interior contains ______________________ that are quite corrosive
compared with the bulk of the solution. - ANSWER-acidic, hydrolyzed salts
An __________ is established within the pit, and the surrounding surfaces act as
cathodes. - ANSWER-anode
True or false? Pits develop at weak spots in the surface film and at sites where the
film is damaged mechanically under conditions where self repair will not occur. -
ANSWER-True
The importance of pitting depends on the thickness of the metal, thus on ____
sections pitting may be serious, while on _______ pitting is of less importance. -
ANSWER-thin, thick
List the four stages of pitting. - ANSWER-1. initiation
2. propagation
3. termination
4. reinitiation
2026/2027 WITH 120 QUESTIONS AND
WELL-VERIFIED CORRECT
ANSWERS | ALREADY GRADED A+ |
GUARANTEED PASS | CORROSION
TECHNICIAN PRACTICE EXAM
When corrosion rates are __________ or ___________, long-term projections of
corrosion damage are possible. - ANSWER-Linear, decrease with time
When corrosion rates ______________, it is more difficult to predict long-term
corrosion. - ANSWER-Increasing with time
General attack corrosion is usually measured in terms of - ANSWER-Penetration
rates per unit of time in millimeters per year or mils per year
Experimental measurement of general attack corrosion is usually made by
measuring ________________ and calculating ________________. - ANSWER-
Weight loss, the equivalent loss of metal thickness
,_________ and _____________ steels perform well in a wide variety of
environments, including, atmospheric pressure, immersion in natural waters and
many chemicals, and underground. - ANSWER-carbon, low-alloy steels
True or false? Aluminum and aluminum alloys may be used where localized
corrosion does NOT occur. - ANSWER-True
Rates of uniform corrosion of aluminum can be very high in ______________
environments. - ANSWER-alkiline
True or false? Protective coatings are particularly effective in controlling uniform
corrosion. - ANSWER-True
____________ or ________________________ repair can stop the attack before it
progresses far enough to cause a significant loss of material. - ANSWER-
recoating, local coating
__________________________ is a method which interferes with the flow of the
current in the electrochemical cell - ANSWER-cathodic protection
________________ can be used in underground or emersion situations. -
ANSWER-cathodic protection
_________________________________ are low-alloy steels formulated
specifically to form tightly adherent, dense corrosion products that inhibit
corrosion in some atmospheric environments. - ANSWER-weathering steels
, _______________________, unlike general corrosion, occurs at discrete sites on a
metal surface. - ANSWER-localized corrosion
_____________________ is a deep, narrow corrosive attack which often cause
rapid penetration of the substrate thickness. - ANSWER-pitting
_________________________ is characterized by corrosive attack in a localized
region surrounded by corrosion free surfaces, or surfaces that are attacked to a
much lesser extent. - ANSWER-pitting corrosion
Very often, a local cell is set up between the interior of the pit and the external
surface. The interior contains ______________________ that are quite corrosive
compared with the bulk of the solution. - ANSWER-acidic, hydrolyzed salts
An __________ is established within the pit, and the surrounding surfaces act as
cathodes. - ANSWER-anode
True or false? Pits develop at weak spots in the surface film and at sites where the
film is damaged mechanically under conditions where self repair will not occur. -
ANSWER-True
The importance of pitting depends on the thickness of the metal, thus on ____
sections pitting may be serious, while on _______ pitting is of less importance. -
ANSWER-thin, thick
List the four stages of pitting. - ANSWER-1. initiation
2. propagation
3. termination
4. reinitiation
