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Daily Quiz (49)


Where would you find sulfate-reducing bacteria?


By what process is steel covered with an impervious oxide to inhibit chemical or electrochemical reactions on the surface?


The list of corrosion control technologies, as described by NACE, includes cathodic protection, chemical inhibitors, coatings and what fourth technology?


Sulfate-reducing bacteria that cause corrosion of steel and concrete are likely to be found in what media?


Micaceous iron oxide provides what type of anti-corrosion protection to coatings?


True or false: One cause of rebar corrosion is carbonation of the concrete around the rebar.


Which of these statements is not true about Corrosion Under Insulation (CUI)?


Sulfate-reducing bacteria contribute to corrosion by what mechanism?


What general name is given to a coating that responds with corrective measures when corrosion is detected beneath the coating?


What type of corrosion is characterized by a definite thread-like structure and directional growth under coatings on steel?


True or false: According to a study by German researchers, specifying a particular edge geometry is not the most significant factor in controlling corrosion of steel edges in seawater environments.


True or false: The high alkalinity of concrete causes corrosion of rebar.


What type of corrosion is caused by the contact of dissimilar metals immersed or buried in an electrolyte?


True or false: One cause of rebar corrosion is carbonation of the concrete around the rebar.


What type of corrosion is characterized by a definite thread-like structure and directional growth under coatings on steel?


Sulfate-reducing bacteria contribute to corrosion by what mechanism?


True or false: Sacrificial protection of steel can be achieved only with metallic coatings, such as galvanizing or zinc-rich paints.


True or false: When dissimilar metals are in contact in the presence of an electrolyte, the more noble metal will experience galvanic corrosion.


True or false: Contact between dissimilar metals can cause galvanic corrosion.


In a corrosion cell, where does the corrosion occur?


What kind of corrosion is caused by the formation and collapse of bubbles?


True or false: Ethanol is corrosive and highly water soluble, according to the EPA.


Which of the following features of a corrosion-control coating contribute to barrier protection?


True or false: When two dissimilar metals are in contact in the presence of an electrolyte, the more noble metal will experience galvanic corrosion.


In coating work, what is a jeep test?


True or false: Odor control ventilation systems in wastewater treatment plants stop biogenic sulfide corrosion.


A recent 5-year inspection of a lining system on a potable water tank bottom that had suffered significant soil-side corrosion in Melbourne, Australia, showed excellent performance from what lining type?


True or False: Some cementitious liners for repairing manholes contain chemical additives to kill bacteria that cause microbiologically induced corrosion.


True or false? According to a study by German researchers, specifying a particular edge geometry is the most significant factor in controlling corrosion of steel edges in sea-water environments.


What type of corrosion is characterized by a definite thread-like structure and directional growth under coatings on steel?


What is ICORR?


The direct cost of corrosion in the United States is nearly:


True or False: Internal corrosion is often a problem for above-ground storage tanks used to contain potable water.


Who is the organizer of the Mega Rust Conference, which focuses on naval corrosion issues?


When dissimilar metals are in contact with one another, what kind of corrosion is likely to occur?


Under what condition is weathering steel most likely to suffer accelerated corrosion?


What type of coating combats corrosion mainly by preventing moisture and oxygen from reaching the steel surface?


True or false: Cyclic corrosion testing of protective coatings in the laboratory is now considered a better indicator of field performance than the traditional salt fog test, ASTM B 117.


What effect does the high alkalinity of concrete have on corrosion of rebar within the concrete?


What is the critical corrosion temperature range for carbon steel under insulation that a coating must withstand, according to NACE?


What is another name for dissimilar metal corrosion?


According to the World Corrosion Organization, the global cost of corrosion in 2011 was what amount in US dollars?


True or false: One cause of rebar corrosion in concrete is carbonation of the concrete surrounding the rebar.


What general name is given to a coating that responds with corrective measures when corrosion is detected beneath it?


Which of the following elements of design of steel structures is most likely to promote corrosion?


What are the conditions necessary for corrosion of steel to occur?


Corrosion of rebar is likely to cause which of the following conditions in concrete?


In a corrosion cell, where does the corrosion occur?


Sulfate-reducing bacteria contribute to corrosion by what mechanism?


 
 
   

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