Question

E. With proper reasoning choose the odd one out:
1. Iron, copper, cobalt, nickel
2. Steel, copper, aluminium, brass
3. Single-touch method, double-touch method, magnetic induction, magnetic separation
4. Bar magnet, horseshoe magnet, cylindrical magnet, lodestone​

Answer 1

Answer:

Iron, copper, cobalt, nickel..

Answer 2

Answer:

1. Copper

2. Brass

3.Magnetic induction

4.Lodestone