Question

Ordinary glass is
A: Sodium silicate
B: Calcium silicate
C: Sodium and calcium silicate
D: Mixed salt of $Na$ and $Ca$

Answer 1

Hint: Glass is a supercooled liquid. It is a transparent amorphous solid. Some of its properties and characteristics include that it is brittle in nature and also that it has an indefinite melting point. It can be transparent to a range of visible rays.

Complete step by step answer:
Ordinary glass is made up of molten sand which mainly contains silica and also ordinary glass is a mixture of sodium silicate and calcium silicate. Because they are the main ingredient from which ordinary glass is made. So our answer to this question is option C that is Sodium and calcium silicate.

Hence the correct option is ‘C’

Additional information: Amorphous solid is a noncrystalline solid with irregular patterns of ions, molecules, or atoms in a solid whereas in crystalline solids they have a regular and repeating arrangement of components in a solid.
Amorphous solids do not have fixed melting or boiling points; they melt over a range of temperatures whereas crystalline solids have fixed melting points.
Amorphous solid does not have definite heat of fusion whereas crystalline solids have definite heat of fusion.
Amorphous solids are isotropic in nature which means they have the same properties when measured along with different directions whereas crystalline solids are anisotropic in nature which means they have different properties when measured along with different directions.

Note: The most common type of glass is ordinary glass which just formed from sand. Depending upon their manufacturing one can adjust refractive index glass and adjust the transparency of glass.