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  • What is annealing of iron?
Multiple choice

What is annealing of iron?

  1. Breaking an iron rod

  2. Repeatedly heating and cooling an iron rod to increase strength

  3. Coating an iron rod with another metal

  4. Rusting of iron due to water

  5. NA

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Annealing is the process of repeatedly heating and cooling an iron rod to increase strength.

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