Question

Sial is mixture of silica and .,…….. .​

Answer 1

Answer:

and aluminium

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Answer 2

Answer:

Aluminum

Explanation:

The uppermost layer of the crust is called the sial, consisting of silicate and aluminium (Si = silicate, Al = aluminium). ... The name 'sial' was taken from the first two letters of silica and of alumina.