PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free DemoAnswer the following question:
Give reason for the following observations.
(a). Naphthalene balls disappear with time without leaving any solid.
(b). We can get the smell of perfume sitting several metres away.
(a). Naphthalene balls disappear with time without leaving any solid.
(b). We can get the smell of perfume sitting several metres away.
(a). Because naphthalene balls sublime and directly changes into a without leaving any solid.
(b). Because perfume contains and diffuse faster and can reach people sitting several metres away.
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