Quartz is made of A. Calcium Sulphate B. Calcium Silicate C. Sodium Sulphate D. Sodium Silicate

Calcium Sulphate
Calcium Silicate
Sodium Sulphate
Sodium Silicate

The correct answer is D. Sodium Silicate.

Quartz is a mineral composed of silicon and oxygen atoms. It is the most common mineral in the Earth’s crust, and it is found in a variety of forms, including sand, granite, and quartzite.

Calcium sulfate is a mineral composed of calcium and sulfate ions. It is found in a variety of forms, including gypsum,

anhydrite, and calcite.

Sodium sulfate is a mineral composed of sodium and sulfate ions. It is found in a variety of forms, including Glauber’s salt, mirabilite, and thenardite.

Quartz is not made of any of these minerals. It is made of silicon and oxygen atoms.