Corrosion Theories Quiz

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson
Download our mobile app to listen on the go
Get App

Questions and Answers

What is the primary nature of the corrosion process?

  • Condensation process
  • Reduction process
  • Oxidation process (correct)
  • Sublimation process

Which theory of corrosion primarily deals with reactions in the absence of moisture?

  • Acid theory
  • Galvanic theory
  • Dry or chemical corrosion theory (correct)
  • Electrochemical theory

What is the main consequence of corrosion on metals?

  • Formation of alloys
  • Improvement in conductivity
  • Increase in weight
  • Loss of metal integrity (correct)

Which of the following is NOT considered a theory of corrosion?

<p>Biochemical theory (A)</p> Signup and view all the answers

In the context of corrosion theories, what type of reactions does galvanic corrosion involve?

<p>Reactions between different metals in an electrolyte (C)</p> Signup and view all the answers

Which acids are primarily involved in the Acid Theory of corrosion?

<p>Acids produced by atmospheric carbon dioxide and moisture (A)</p> Signup and view all the answers

Which gas does NOT play a role in the Chemical Theory (Dry Corrosion) of metal corrosion?

<p>Carbon dioxide (A)</p> Signup and view all the answers

What determines the extent of corrosion according to the Chemical Theory?

<p>Chemical affinity of the metal for reactive gases (C)</p> Signup and view all the answers

What is a common product of corrosion according to the Acid Theory?

<p>Fe(OH)3 (C)</p> Signup and view all the answers

Which of the following is an assumption of the Electrochemical Theory of corrosion?

<p>Electrochemical reactions play a crucial role in the rusting of metals. (A)</p> Signup and view all the answers

Flashcards

Corrosion

The process of forming metal compounds through chemical reaction between a metal's surface and its environment, leading to metal loss.

Corrosion - oxidation process

Corrosion is a type of oxidation reaction causing the breakdown of metals.

Acid Theory

A theory proposing that acids cause corrosion of metals.

Dry Corrosion

Corrosion taking place without water or moisture.

Signup and view all the flashcards

Electrochemical Corrosion

Corrosion happening due to a current flow between different metal points in contact with an electrolyte.

Signup and view all the flashcards

Acid Theory of Corrosion

Iron corrosion caused by acids in the atmosphere like carbon dioxide, moisture, and oxygen.

Signup and view all the flashcards

Chemical Theory of Corrosion (Dry Corrosion)

Metal corrosion caused by direct reactions with atmospheric gases like oxygen and sulfur oxides.

Signup and view all the flashcards

Electrochemical Theory of Corrosion

Corrosion occurs due to electrochemical reactions at the metal surface; (more details needed).

Signup and view all the flashcards

Corrosion Products (Acid Theory)

The mixture of compounds formed when iron rusts, including Fe(OH)3, Fe(HCO3)2, and Fe(OH)CO3.

Signup and view all the flashcards

More Like This

Use Quizgecko on...
Browser
Open
Browser
Browser