Q. ‘Lapis-Lazuli’ is a blue coloured precious stone. It is mineral of the class
A) Sodium alumino silicate
B) Basic copper carbonate
C) Zinc cobalt
D) Prussian blue
Explanation
(a)
Lapis lazuli is the sodium alumino silicate present in earth rocks as blue stone
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.