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Layers of the Earth

Identify the ...

Question

Identify the constituents of Sial.

A

Silica

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B

Alumina

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C

Silicon

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D

Aluminium

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Solution

The correct options are
A Silica
B Alumina
The main mineral constituents of the continental mass of the crust are silica and alumina. It is thus called sial (si-silica and al-alumina).

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