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Question

The core of the Earth is mainly composed of which of the following elements?

A
Nickel
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B
Manganese
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C
Iron
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D
Zinc
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Solution

The correct options are
A Nickel
C Iron
The core is composed mainly of Nickel or (Ni) and Iron or (Fe). Hence, it is called the NIFE layer, based on the chemical formula of these elements.

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