Whether domicile certificate is essential for getting admission in engineering institutes filling seats based on JEE main exams?

If you take admission based on JEE Main Central Online Counselling, then there is no need for domicile certificate. Though there is a HOME STATE or HS quota but it is entirely based on the state from which you have passed your qualifying examination (i.e. your 12th boards.)

Yes it is essential. but you can submit it afterwards. What is the rank? You can try other good engineering colleges too like Jadavpur University, Faculty of Engineering & Technology Kolkata, IIIT, Hyderabad Harcourt Butler Technological Institute, Kanpur Lovely Professional University. Best of L