Question

When molten form of crystalline solid is rapidly cooled, it changes into:

• A. crystalline solid
• B. amorphous solid
• C. insulator
• D. super conductor

Answer 1

Answer: (B)

amorphous solid

When a molten form of crystalline solid is cooled rapidly, the molecules don't get enough time to make an ordered arrangement due to quenching of material. Hence the structure becomes unordered and it changes into amorphous solid.

So option B is the correct answer.