Which is best for mechanical engineering, Nirma University or NIT Srinagar or North East NITs?

NIT Srinagar is the best option among the ones mentioned in the question. But living in Srinagar is challenging. If you can deal with frequent disruption and non-functionality of the institute then you can choose NIT Srinagar.

Nirma University can be a good alternative too. It is one of the best engineering colleges in Gujarat as well as India. As it is located on the Gandhinagar-Ahmedabad highway, many reputed MNCs visit the campus. Nirma has a 120-acre campus. It offers good infrastructure. Their placement record is also quite impressive. Almost 90% of students get placed in reputed companies. The only disadvantage of choosing Nirma is that they don’t offer a hostel.

In North-East, you can go with Agartala or Silchar.