Question

Which of the following are correct?

(i) Iron, nickel, aluminium - Crust
(ii) Nickel, iron - Core
(iii) Aluminium, silicon - Crust
(iv) Silicon, Aluminium - Core

• A. (i), (ii)
• B. (i), (iii)
• C. (ii), (iii)
• D. (i), (ii)

Answer 1

The correct option is C (ii), (iii)

In the initial days of earth’s formation, lighter ones like aluminium and silicon formed the crust. Heavy elements such as iron and nickel were present in the centre of the earth .