Q. The “NIFE” layer is related to which of the following?

[A] Crust

[B] Mantle

[C] Core

[D] Asthenosphere

Answer: C
Notes:

Explanation: The core – mantle boundary is located at a depth of 2,900 km. The outer core is in liquid state while the inner core is in solid state. The core is made up of very heavy material mostly constituted of nickel and iron. It is sometimes referred to as the nife layer.

Source: NCERT – Fundamental of Physical Geography