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प्रश्न
Why does the size of naphthalene balls decrease when left open?
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उत्तर
When naphthalene balls are left open, due to sublimation they change to vapours and their size decreases.
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संबंधित प्रश्न
.............. is a process that involves direct conversion of a solid into its vapour on heating.
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What is sublimation?
Define sublimation.
‘Osmosis is a special kind of diffusion’. Comment.
solid substances like ______, ______ that get converted into gas directly upon heating without becoming liquid.
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Why is sublimation useful for separating iodine and sand?
