Question

Glass is best described as a____.

• A. Solid
• B. Liquid
• C. Colloidal Solution
• D. Super cooled Liquid

Answer 1

The correct option is D

Super cooled Liquid

Explanation for correct option:-

Option (D) Supercooled liquid

• Supercooled liquids is a liquid that is present below freezing point.
• Glass is a homogeneous mixture of super-cooled molten sodium silicate and calcium silicate.
• When glass is made the silica is cooled from its liquid state, and it does not solidify even when the temperature is dropped below freezing point.

Hence, glass is a super cooled liquid. the correct answer is option D.

Explanation for incorrect options:-
Option (A) Solid

• Solids have an orderly organized structure, while glass is an amorphous solid ( an intermediate between two states of matter), silica is chilled below its freezing point to form glass.
• Hence option is (A) incorrect.

Option (B) Liquid

• Glass is an amorphous solid, therefore it cannot be placed in the category of liquids.
• Hence, option (B) is incorrect.

Option (C) Colloidal solution

• A colloidal solution is a mixture in which microscopically dispersed insoluble particulars are dispersed in another substance.
• Glass is not a mixture, therefore. option (C) is incorrect.

Therefore, Glass is best described as Option (D) Supercooled liquid