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Corrosion in Chemical Industry: Section 1
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Corrosion in Chemical Industry: Section 1

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Questions and Answers

What is the definition of corrosion?

  • Changes in a material structure due to heat
  • Changes in a material structure due to pressure
  • Undesirable changes in a material structure (correct)
  • Desirable changes in a material structure

    • Which of the following is NOT a corrosion environment?

  • Inert Gases (correct)
  • Chemical Acidic
  • Food Stuffs
  • Liquid Metals

    • What is a common result of corrosion in a moisture environment?

  • Rusting of copper
  • Cracking of aluminum
  • Rusting of iron (correct)
  • Cracking of gold

    • Which of the following is true about metal corrosion?

    <p>No metal has resistance to corrosion in all environments</p> Signup and view all the answers

    What is NOT a common corrosion environment?

    <p>Inert Gases</p> Signup and view all the answers

    What is the most suitable material to use in a corrosive environment?

    <p>A metal with high resistance to corrosion in the specific environment</p> Signup and view all the answers

    Which type of corrosion occurs due to gases at high temperatures?

    <p>Dry corrosion</p> Signup and view all the answers

    What type of corrosion can be caused by humidity?

    <p>Wet corrosion</p> Signup and view all the answers

    Which type of corrosion involves metals reacting directly with their environment?

    <p>Chemical corrosion</p> Signup and view all the answers

    Which type of corrosion occurs in the presence of fused salts?

    <p>Physical corrosion</p> Signup and view all the answers

    Which type of corrosion is likely to result in metal oxide as a product?

    <p>Chemical corrosion</p> Signup and view all the answers

    Which type of corrosion is least likely to involve electron exchange?

    <p>Physical corrosion</p> Signup and view all the answers

    What is the definition of corrosion?

    <p>The undesirable deterioration of materials that adversely affects their chemical and mechanical properties</p> Signup and view all the answers

    What happens when metals are processed and used without alloying or protection methods?

    <p>They tend to return to their natural compounds</p> Signup and view all the answers

    What is the role of corrosion in human life and safety?

    <p>Corrosion takes a significant role in human life and safety</p> Signup and view all the answers

    Is it possible to eliminate corrosion?

    <p>No, corrosion cannot be completely eliminated</p> Signup and view all the answers

    What is the corrosion mechanism of nonmetallic materials?

    <p>The corrosion mechanism of nonmetallic materials is different from metals'</p> Signup and view all the answers

    What is the main cause of corrosion?

    <p>Corrosion is caused by chemical reactions between a metal or metal alloy and its environment</p> Signup and view all the answers

    What is the main cause of electrochemical corrosion?

    <p>Oxidation of metals in aqueous medium</p> Signup and view all the answers

    What are the three main reasons for the importance of corrosion?

    <p>Environmental, economic, and safety</p> Signup and view all the answers

    What percentage of an industrialized nation’s income is spent on corrosion prevention and maintenance?

    <p>5%</p> Signup and view all the answers

    What is an example of a safety concern related to corrosion?

    <p>Failure of pressure vessels</p> Signup and view all the answers

    What are the two types of economic losses due to corrosion?

    <p>Direct and indirect</p> Signup and view all the answers

    Which of the following is not a consequence of corrosion?

    <p>Improved surface properties</p> Signup and view all the answers

    Which type of corrosion cost includes the replacement of corroded structures and machinery?

    <p>Direct losses</p> Signup and view all the answers

    What type of corrosion cost is associated with capital expenditures?

    <p>Extra spendings because of corrosion</p> Signup and view all the answers

    Which corrosion cost category covers the selection of materials to provide structural integrity and product purity?

    <p>Design expenditures</p> Signup and view all the answers

    What type of corrosion cost is related to controlling, maintenance, and repair spendings?

    <p>Corrosion control expenditures</p> Signup and view all the answers

    Which corrosion cost category includes discarding products that get dirty because of corrosion?

    <p>Product loss</p> Signup and view all the answers

    Which type of corrosion cost is not related to labor or maintenance expenses?

    <p>Design expenditures</p> Signup and view all the answers

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