A free program for Android, by Student Factory.

9 Social Science Solution is a free app that provides answers to all the questions of social science that are to be found in NCERT Books for Class 9. The purpose of the app is to make it easier for the students to get the answers in NCERT Books for Class 9. 

The app is divided into various topics, and in each topic, there are various subtopics that have been included to give you a comprehensive and detailed answer to your questions. In addition, you can find the answers to all the questions of social science that are to be found in NCERT Books for Class 9 in the form of a simple chart and also in the form of a simple text.