P-Block Elements Ques 65

Question: Lapis lazuli is

[AFMC 2004]

Options:

A) Ferrous sulphate

B) Copper sulphate

C) Sodium alumino silicate

D) Zinc sulphate

Show Answer

Answer:

Correct Answer: C

Solution:

Lapis Lazuli is a rock composed mainly of the following mineral, lazurite, hauynite sodalite, nosean, calcite, pyrite, lapis lazuli is actually sulphur containing, sodium aluminium silicate having chemical composition $ 3Na_2O.3Al_2.6SiO_2.2Na_2S $ .



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