Engineering Entrance Exam

Yes, you will get a seat in Shiv Nadar University with this score. Last year, students with the same score got a seat in the same college.

Yes, you can get admission in Amrita University. Your rank is good enough to get you a seat in this college. You can apply with your category also to get reservations benefits. And keep all the documents ready for verification at the time of admission.
Best of luck.

If you belong to the general category then with this percentage forget about any scholarship or a concession for a branch like CS.

JEE results are out, check it. IIIT-Hyderabad, VIT-Vellore and other private colleges will announce the cut-off rank after JEE Advanced exam is over.
All the best.

It is probably because maybe you have entered something wrong in your OMR sheet, I am talking about personal details. So, now this cannot be reversed and if you are desperate about JEE Mains then you have to wait for another year to give JEE exam.
All the best.

For the computer science branch, it would be around 90% to be at the safer side. For more details, you can click on the link given below:
https://www.shiksha.com/college/pune-institute-of-computer-technology-society-for-computer-technology-and-research-pune-satara-road-3715/admission

Kindly visit this link:
https://www.shiksha.com/college/school-of-engineering-and-technology-cmr-university-hennur-bagalur-road-bangalore-52030

Actually, you have to specify the branch in which you want to take admission then only you can get a clear cut answer. Do mention your category. You can go for any branch except for CS.

Yes, you can get admission in either EEE or civil branch in Coimbatore, Bangalore or Chennai. Your rank is enough to get you a seat. You should participate in the counselling process.
Best of luck.