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The colour of vapours formed on sublimation of iodine solid is

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Yellow

Colourless

Purple (violet)

Orange

answer is A.

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Detailed Solution

Sublimation is the process in which a solid substance changes its physical state and directly converts into its gaseous form.

Solid iodine when sublimated into its gaseous state forms purple (violet) vapours because in this form it absorbs green and yellow radiation when at last emits violet colour.

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