There are many scholarships from central govt , state govt, private trusts and bodies, as well as individual and corporate sectors,
the second category of scholarship is based on cast and economic backwardness,
the 3rd category is based on professions.
your Question has multiple dimensions while answering one has to keep in mind,
at a glance i would suggest to go to these sites for little knowledge and guidance about the scholarship.
if you have any specific question plz dont hesitate to ask again.