Which of the following is an amorphous solid? P (A) Graphite (C) W ...

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Which of the following is an amorphous solid?
P
(A) Graphite (C)
W
(B) Quartz glass \( \left(\mathrm{SiO}_{2}\right) \)
(C) Chrome alum
(D) Silicon carbide \( (\mathrm{SiC}) \)
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