(a 3. Give reason for the following observations. (a) Naphthalene balls disappear with time without any solid. (b) We can get the smell of perfume sitting several away. following substances in increasing order of
Answers
Answer:
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Answer:
Naphthalene balls disappear with time without leaving any solid, because naphthalene balls sublime and directly changes into vapour state without leaving any solid.
Explanation:
When perfume is released it quickly changes into vapour. The kinetic energy of gas molecules is high & the rate of diffusion is high. Hence we can smell the perfume sitting several metres away.