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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

In which of the following minerals, Al is present? 1. Fluorspar 2....

In which of the following minerals, Al is present?
1.1. Fluorspar
2.2. Mica
3.3. Feldspar
4.4. Cryolite

Options

  1. A1, 2, 3
  2. B1, 2, 4
  3. C2, 3, 4
  4. D1, 2, 3, 4

Correct answer

C. 2, 3, 4

Step-by-step solution

Aluminium is not present in Fluorspar but present in all others.
Cryolite: Na3AlF6N{a}_{3}Al{F}_{6}
Mica: KAlSi3O10(OH)2KAlS{i}_{3}{O}_{10} ( OH{)}_{2}
Feldspar: KAlSi3O8KAlS{i}_{3}{O}_{8}
Fluorspar: CaF2Ca{F}_{2}.
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