Which of the following features are not shown by quartz glass ?

1.	Which of the following features are not shown by quartz glass ?
Answer» This is a CRYSTALLINE solid Refractive index is same in all the directions This has definite heat of fusion This is ALSO CALLED super cooled liquid Solution :(a) is not correct because quartz GLASS is amorphous . (C ) is not correct because amorphous solids have no definite heat of fusion.

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