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Question
Classify the following as amorphous or crystalline solids:
Polyurethane, naphthalene, benzoic acid, teflon, potassium nitrate, cellophane, polyvinyl chloride, fibre glass, copper.
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Solution
| Amorphous solids | Crystalline solids |
| Polyurethane | Naphthalene |
| Teflon | Benzoic acid |
| Cellophane | Potassium nitrate |
| Polyvinyl chloride | Copper |
| Fibre glass |
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