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Free API-571 – Corrosion and Materials Practice Test Question

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Showing 19–20 of 20 questions

Question 19

________ is a form of carbon that may promote carburization, particularly during decoke cycles where temperatures exceed the normal operating temperatures.

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  • ○

    Carbonic acid
  • ○

    Coke
  • ○

    Crude oil
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    None of the above
Question 20

Susceptibility to hydrogen stress cracking __________ with __________ hardness.

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  • ○

    Increases, increasing
  • ○

    Decreases, increasing
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    Decreases, Decreasing
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    Both A and C