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Question
Why some glass objects from ancient civilisations are found to become milky in appearance?
Options
Glass is a crystalline solid, milky appearance is due to its crystalline nature.
Glass is amorphous but on heating it become crystalline at some temperature.
Because of reaction of glass with impurities present in the atmosphere.
None of these
MCQ
Solution
Glass is amorphous but on heating it become crystalline at some temperature.
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