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NTA Abhyas 2020

Exam: NTA Abhyas
Year: 2020
Subject: Chemistry
Chapter: General Principles and Processes of Isolation of Metals

NTA Abhyas 2020 · Chemistry · General Principles and Processes of Isolation of Metals

How many of the following are the minerals of aluminium? Magnesite,...

How many of the following are the minerals of aluminium?
Magnesite, cryolite, kaolinite, malachite, epsum salt, bauxite, cuprite

Correct answer

3

Step-by-step solution

Cryolite

\left(N{a}_{3}Al{F}_{6}\right)

, kaolinite \left[A{l}_{2}{\left(OH\right)

}_{4}S{i}_{2}{O}_{5}\right] and

bauxite \left(A{l}_{2}{O}_{3} . 2{H}_{2}O\right) are the minerals of aluminium.

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