Glass is a

[amp_mcq option1=”liquid” option2=”colloid” option3=”non-crystalline amorphous solid” option4=”crystalline solid” correct=”option3″]

This question was previously asked in

UPSC NDA-1 – 2017

Download PDF Attempt Online

Glass is a non-crystalline amorphous solid. Unlike crystalline solids which have a highly ordered, repeating atomic structure, glass has a disordered atomic structure similar to a liquid, but it is rigid and retains its shape like a solid over geological timescales. It is sometimes described as a supercooled liquid because it flows extremely slowly, although this is a simplified view; a more accurate description is that it exists in a glass state, which is a rigid, disordered state.

Glass lacks the long-range crystalline order found in crystalline solids and is considered an amorphous solid.

Common glass (soda-lime glass) is primarily composed of silicon dioxide (silica, SiO2), with additives like sodium carbonate (soda ash) and calcium carbonate (lime) to lower its melting point and improve workability.

More similar MCQ questions for Exam preparation:-