Question

‘Lapis-Lazuli’ is a blue coloured precious stone. It is mineral of the class

Solution

Correct option is

Sodium alumino silicate

Lapis lazuli is the sodium alumino silicate present in earth rocks as blue stone.

SIMILAR QUESTIONS

Q1

Which statement is correct?

Q2

Flux is used to remove

Q3

The final step for the extraction of copper from copper pyrite in Bessemer converter involves the reaction.

Q4

Auto-reduction process is used in the extraction of

Q5

Among the following groups of oxides, the group containing oxides that cannot be reduced by carbon to give the respective metal is

Q6

van-Arkel method of purification of metals involves converting the metal to a

Q7

A metal which is refined by poling is

Q8

Wolframite ore is separate from tin stone ore by the process of

Q9

Pb and Sn are extracted from their chief ore by

Q10

Gallium arsenide is purified by