Question

Which of the following is a non-magnetic substance?
d all of these
3.
c. Iron
d. Nickel
a. Copper
b. Cobalt
What should a compass needle be made of?
d. Plastic
c. Wood
a. Copper
b. Steel
which of the following property is the sure test of magnetism
a.attraction
b.repulsion
c.both(a.)and (b.)
d.none of these ​

Answer 1

Answer:

1) All of these

2) steel

3) attraction