MetallurgyHard

Question

Which mineral has been named incorrectly ?

Options

A.Bauxite : Al₂O₃.2H₂O

B.Corundum : Al₂O₃

C.Cryolite : 3NaF .AlF₃

D.Feldspar : Be₃Al₂Si₆O₁₈

Solution

(D) Feldspar is K₂O.Al₂O₃.6SiO₂. beryl is Be₃Al₂Si₆O₁₈.

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