Multiple choice

A lot of wood powder, screws and iron nails are spread on the floor. How can you separate the items from the wood powder without wasting time?

  1. By handpicking

  2. By using a magnet

  3. By burning the wood powder

  4. Both (1) and (3)

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

By using a magnet, we can separate screws and iron nails wood powder without wasting time. This is because screws and iron nails are easily attracted by magnets.