I'm using O.P Tondon for all the three subjects of chemistry is it ok or should i switch to mmaterial supplied by my institution i.e Narayana institutes since i will be appearing for iitjee this year
I'm using O.P Tondon for all the three subjects of chemistry is it ok or should i switch to mmaterial supplied by my institution i.e Narayana institutes since i will be appearing for iitjee this year