Question

3. Which of the following statements about rusting is true?

• A. It is a fast process
• B. During rusting, a large quantity of heat is produced
• C. It takes place at a normal temperature
• D. It takes place only in daylight

Answer 1

The correct option is C

It takes place at a normal temperature

Explanation:

• Rusting of iron refers to the formation of rust, a mixture of iron oxides, on the surface of iron objects or structures.
• This rust is formed from a redox reaction between oxygen and iron in an environment containing water (such as air containing high levels of moisture).
• The rusting of iron is characterized by the formation of a layer of a red, flaky substance that easily crumbles into a powder. So, this is the correct option.

Conclusion: Thus, option (C) is the correct answer.