Hi

There is no doubt that there are one of the best teachers teaching on unacacdemy platform but for chemistry its my personal opinion that some teacher's are like meticulously good.

For organic Surendra mishra sir is amazing his way of teaching tge quality of notes is amazing.

For inorganic piyush maheshwari sir is fantastic

And obviously for physical brijesh jindal sir is all you need to advance your concepts.

These are few teachers with amazing way of teaching and guiding students amazingly.