Can I go for an MCA from NITs after completing my BCA from online Manipal University Jaipur?
Yes, definitely! Since Manipal University is a well recognized university and also has legal validity of issuing degrees, hence if you have completed your BCA from online Manipal University, Jaipur, then you are definitely eligible to pursue the advanced degree of MCA from any National Institute of Technology you want (the college must offer a course in MCA).
Hope I have answered your question. All the best!