Hey tarun .
Yes there are many scholarships for bsc students only .First of all you should check out the National scholarship portal (NSP) .It has lots of scholarship options for various categories . It comes under central government .
Then go for State government scholarship portal like up scholarships .And  then check out in your college for scholarships .Check out this link of NSP
https://scholarships.gov.in/
So go through this link .For bsc students usually  scholarships are based upon your board percentage . There are other criterias you can check yourself by going through this link given above