Question:
Uncontrolled crystallization of glass is called
Uncontrolled crystallization of glass is called
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Devitrification means unwanted or uncontrolled crystallization in glass.
Updated On: May 7, 2026
- Melting
- Refining
- Heat conditioning
- Devitrification
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The Correct Option is D
Solution and Explanation
Concept:
Glass is normally an amorphous material. If crystals form in glass unintentionally, the glass may lose transparency and quality.
Step 1: Glass does not have a regular crystalline structure.
Step 2: During cooling or heat treatment, crystals may sometimes form inside the glass.
Step 3: When this crystallization occurs in an uncontrolled manner, it is called devitrification.
Step 4: Devitrification is usually considered a defect because it can make glass cloudy or weak. Therefore, uncontrolled crystallization of glass is called: \[ \boxed{\text{Devitrification}} \]
Step 1: Glass does not have a regular crystalline structure.
Step 2: During cooling or heat treatment, crystals may sometimes form inside the glass.
Step 3: When this crystallization occurs in an uncontrolled manner, it is called devitrification.
Step 4: Devitrification is usually considered a defect because it can make glass cloudy or weak. Therefore, uncontrolled crystallization of glass is called: \[ \boxed{\text{Devitrification}} \]
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