Vidyalelo
General Knowledge · Q551

Practice

Competitive Exams · General Knowledge · question 551

Q551

Which one of the following mineral does not contain oxygen ?

A.
Haematite
B.
Bauxite
C.
Cryolite
Answer
D.
Calcite

Answer: Option C

Solution

Answer: Option C
Solution:
Cryolite (Na3AlF6, sodium hexafluoroaluminate) does not contain oxygen. It occurs as glassy, colorless, white-reddish to gray-black prismatic monoclinic crystals. Cryolite is used as an insecticide and a pesticide. It is also used to give fireworks a yellow color.