'Lapis-Lazuli' is a blue coloured precious stone. It is mineral of the class [NCERT 1980; AIIMS 1980; BHU 1978, 80]

'Lapis-Lazuli' is a blue coloured precious stone. It is mineral of t

1.	'Lapis-Lazuli' is a blue coloured precious stone. It is mineral of the class [NCERT 1980; AIIMS 1980; BHU 1978, 80]
A.	Sodium-alumino silicate
B.	Zinc cobaltate
C.	Basic copper carbonate
D.	Prussian blue
Answer» B. Zinc cobaltate

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'Lapis-Lazuli' is a blue coloured precious stone. It is mineral of the class [NCERT 1980; AIIMS 1980; BHU 1978, 80]

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