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The Solid State — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryThe Solid State2 Marks
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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Answer

Amorphous solids: Polyurethane, teflon, cellophane, polyvinyal chloride, fibre glass.Crystalline solids: naphthlene, benzoic acid, potassium nitrate, copper.

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