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प्रश्न
Why does only iodine appear as violet vapours on heating?
विकल्प
Both iodine and sand sublime
Sand melts but iodine forms vapour
Iodine melts then evaporates
Iodine sublimates but sand does not
MCQ
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उत्तर
Iodine sublimates, but sand does not
Explanation:
Iodine sublimates into vapour, while sand does not change state on heating.
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