Raju (18) secured 167th rank while his brother Brijesh (19) stood 410th in the IIT entrance exam.
"Sulabh will take care of all financial expenses of Raju and Brijesh. I will personally ensure that money does not become a hurdle for the duo in getting admission in IITs," the NGO's founder Bindeshwar Pathak said in a statement.
Admissions to the IITs start on June 25.