Question

With proper reasoning find 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

Book: Middle School Physics Class 6 ICSE Edition
Chapter: Magnetism

Plz answer this question
I hav my Physics Exam Tomorrow​

Answer 1

Answer:

1. cobalt

2.brass

3.magnetic induction

4.

Answer 2

1.cobalt
2.brass
3.magnetic induction
4.lodestone