Multiple choice

An element X burns in atmosphere with shower of spark, forming the magnetic oxide of X. Which is the correct combination of metal and its oxide?

  1. Al and Al2O3

  2. Pb and Pb3O4

  3. Fe and Fe3O4

  4. Zn and ZnO

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

Iron forms its magnetic oxide with iron.