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Which of the following is an amorphous solid?
(i) Graphite (C)
(ii) Quartz glass
(iii) Chrome alum
(iv) Silicon carbide (SiC)
Answers (1)
The answer is the option (ii)
|
|
Crystalline Silica (Quartz) |
Amorphous silica (Glass) |
|
1. |
They are crystalline in nature. |
Light white powder appearance |
|
2. |
All the 4 corners of silica tetrahedron are shared by others to give a solid network. |
The silica tetrahedron are randomly joined giving rise to polymeric chains, sheets or 3-Dimensional units. |
|
3. |
It has high melting point |
It does not have any sharp melting point and softens gradually to liquid on heating. |
View full answer
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