Extraction of Metals - Result Question 7

####7. The ore that contains the metal in the form of fluoride is

(2019 Main, 9 April I)

(a) magnetite

(b) sphalerite

(c) malachite

(d) cryolite

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Solution:

  1. Cryolite ore (Na3AlF6, sodium hexafluoroaluminate ) contain fluorine while other given options such as malachite (Cu2(CO)3(OH)2), sphalerite ((Zn,Fe)S) and bauxite (Al2O3) does not contain fluorine.


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