They will ask questions regarding the subject wise of the candidate according to which category they are going to teach, about community, current situation what is going on around India and World, leadership, politics, general knowledge, etc.
There were many process for the recruiting or interview. As for as my knowledge, they will give test and they will look through whether the candidate is capable for up to their remarks. They will look through the certificates based up on their graduation and other qualities and wait for their responds.
Make sure you are very passionate about teaching and childern. Be yourself and answer honestly. Try to apply to a state whose language you speak - makes the work experience much better.
You will need to teach a mock class, so do be prepared for that.
I would start right from the beggining about the organisation,their goal,the ideas,the basic criteria about being a good teacher, read books about them,the needs for the young generations, and also about a true knowledge.
on experience as well as knowledge
It depends on the experience of the person