Q856
The chemical name of quartz is
A.
Calcium oxide
B.
Calcium phosphate
C.
Sodium phosphate
D.
Sodium silicate
AnswerAnswer: Option D
Solution
Answer: Option D
Solution:
Quartz is a compound of one part silicon and two parts of oxygen, silicon dioxide, SiO2. Quartz is the most abundant silica mineral. It is used in a number of industries, the important being glass, foundry, sodium silicate, silicon alloys, etc. The various grades of sodium silicate are characterized by their SiO2:Na2O weight ratio.