Multiple choice

The heating element of electric iron is made up of which of the following substances?

  1. Copper

  2. Tungsten

  3. Nichrome

  4. Zinc

  5. None of these

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

Nichrome is used in electric iron because it has high resistance and is stable in air when hot. Nichrome wire forms a protective layer of chromium oxide.