Question

The core of the earth is made up of

a. silicon
b. aluminium
c. magnesium
d. nickel and iron

Answer 1

The core of the Earth is made up of (d) nickel and iron.

Explanation: Nickel and Iron present in the inner core of the Earth are together known as NiFe. The extreme pressure exerted on the inner core by the rocks of the layers lying above causes the NiFe to be in a solid state.