P Block Elements Question 571
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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