Byjus the learning app is of the best applications to learn the 11th and 12th science course of central board of secondary education. Last week I had installed the application byjus I have learnt some topics of chemistry subject like mole concept, ionization enthalpy, gibs free energy etc. We can learn any topic of subject of science like physics, chemistry, biology and maths.byjus app conatains highly qualified teachers. So we can learn any topic very deeply knowledge of topic related.