Question

Which among the following is a supercooled liquid?

• A. Diamond
• B. Graphite
• C. Copper
• D. Glass

Answer 1

The Correct Option is D

Explanation:

A supercooled liquid is a substance that remains in a liquid state below its usual freezing point, resisting the formation of a crystalline structure. Glass is a prime example of this phenomenon.

Glass is classified as an amorphous solid due to its lack of long-range molecular order, a characteristic feature of crystalline solids. When cooled, glass solidifies without developing a crystal lattice, unlike most substances. This unique behavior is the reason it is often described as a supercooled liquid. The molecular arrangement in glass is neither freely mobile like in a liquid nor periodically ordered like in a crystal; it is fixed in a disordered, glassy state.

Consider the provided options:

• Diamond: A highly ordered crystalline allotrope of carbon.
• Graphite: Another crystalline allotrope of carbon, composed of layered hexagonal planes.
• Copper: A metal that exhibits a crystalline lattice structure when solid.
• Glass: An amorphous solid exhibiting supercooled liquid properties.

Correct Option: Glass