Netaji Subhas University of Technology

If you are getting more than 1 Lacs rank it will be quite hard for you to get admission in DTU or NSIT. But still try your luck as there will still be some seats left for you to grab.
All the best for your admissions in them just try your luck. Upvote if you liked my answer.

As you belong to SC category there are chances of getting. Just verify the link mentioned below. https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor

As per 2017 trends, closing rank was 17456 as cutoffs for CSE branch in OBC Category in Outside Delhi region at DTU under Jee Mains rank.
You can use the college predictor: https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor
And you have very minute chance and could say no chance to get into your mentioned colleges with top branches.
Best of luck

Delhi Region Mechanical Engineering-22980
Outside Delhi Region Mechanical Engineering-7154
This are based on general ranks.

Yes, you can get the addition in NSIT. Go though counseling procedure and list out your colleges. Put college name series which you want first then after second like wise give colleges name.
Hope you got your answer.

Hi Sapnadip,
Yes, of course, it is necessary to pass in chemistry subject if you want to clear your board exams and also for admission to the various Universities after 12th standard.
Good luck.

Hi, please use Shiksha.com's college predictor tool to know the same: https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor