8:39 play_arrow IIT (Physics): Heat and Thermodynamics - First Law of Thermo topchalks visibility 5 schedule 17 years ago favorite
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9:47 play_arrow IIT (Chemistry): Organic Chemistry - Resonance and Its Appli topchalks visibility 7 schedule 17 years ago favorite
9:46 play_arrow CBSE (Chemistry): Electrochemistry - Electrochemical Cells ( topchalks visibility 2 schedule 17 years ago favorite