Question:

The cell formed in bent pipes is an example of

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Stress cells are formed when different parts of the same metal are under different mechanical stresses.
  • Concentration Cell
  • Composition Cell
  • Stress Cell
  • Electrolytic Cell
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The Correct Option is C

Solution and Explanation

When a metal pipe is bent, the bent portion experiences mechanical stress. This stressed portion and unstressed portion behave differently electrochemically. Due to difference in stress, a potential difference is developed between the stressed and unstressed regions. This forms a stress cell. In such a cell, corrosion is more likely to occur at the stressed region. Bent pipes, cold-worked metals, and stressed machine parts are common examples of stress cells. Therefore, the cell formed in bent pipes is: \[ \text{Stress Cell}. \]
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