mam u are the best teacher which make me easy to understand this concept
Best explaination sir thank
Thanks so much... for .upload this video
ur video lecture are very good
Thank you very much sir.
Nyc lecture sirji
excellent explanation , cleared all doubts
very very very nice teaching
It is very good
Really very nice and useful app.
Mam, very well explained
Thank you so much.....your lucid explanations helped not in the test but also created interest in understanding chemistry...i deeply appreciate your work .....thanks again for helping us....do keep up
Very Very nice explaining sir
very helpful video