Education is very expensive nowadays. We want to bring an educational revolution. Our aim is that nobody should be left behind, everyone should get knowledge and quench his thirst for knowledge. In this era of technology students are more attracted towards mobile apps than books. Keeping this in mind Class 9 chemistry textbook has a simple & intuitive design and is perhaps the first App of its kind in the google play store. Key & Textbook chemistry 9 is for all course of 9th grade. In Key & Text