Why does the left leaning ball disappear disappear with time without leaving any solid?
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Answer: (a) Naphthalene balls undergo sublimation due to which it converts directly into vapours and disappear into air without leaving any solid. (b) The particles of perfume diffuse rapidly into the air and its smell can be felt while sitting several metres away.
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Nepthelne ball disappear due to process of sublimation .The phase change is from solid to directly gas.
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