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Karnataka Police Constable Corrosion — practice questions

Explore 1 free Corrosion questions in Karnataka Police Constable Science. Open each question or exercise to read its content, reference answers and available explanation.

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Corrosion questions and exercises with answers

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Which of the following is the formula for rust?Read the answer and worked solution →

Worked practice questions

Which of the following is the formula for rust?

  1. Fe₂OH·H₂O
  2. FeO₃·H₂O
  3. Fe₂O·H₂O
  4. Fe₂O₃·H₂O
Show answer and solution

Correct answer: D. Fe₂O₃·H₂O

1. Rust forms when iron reacts with oxygen and moisture. 2. It is hydrated iron(III) oxide. 3. Its formula is Fe₂O₃·H₂O. _Source: RRB Group D CEN-02/2018 PYQ, Q.96 (rust)._

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