a) Naphthalene is Volatile solid and has a tendency to sublime. Therefore, it changes into the vapours completely which disappear into the air and no solid is left.
b) This is because perfumes contain volatile solvent which carries pleasent smelling vapours. They diffuse quite fast and can reach to people sitting several meters away.
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Answer:
a) Naphthalene is Volatile solid and has a tendency to sublime. Therefore, it changes into the vapours completely which disappear into the air and no solid is left.
b) This is because perfumes contain volatile solvent which carries pleasent smelling vapours. They diffuse quite fast and can reach to people sitting several meters away.
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इंसान की लडाई बस यही है जिंदगी के पन्नो से हर रोज अपने हिस्से की मुस्कुराहट छीन लेखुश रहिए और खुश रखिए यही जिंदगी जीने का सही मतलब है.....!
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