JEE

Hello, I hope you are doing well. You can check the list of colleges including NITs and IIITs that you can get according to your marks and rank here. Use Shiksha JEE college predictor:
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor?utm_source=connect&utm_medium=CR_JEECP&utm_campaign=7489993.

According to last year's cut-off, if you are a general category student then you can't as last year the last admitted rank was somewhere in 1300. But, you are SC/ST or OBC, then you can easily get it.

After appearing for NCHMCT All India Entrance Test, candidates need to first wait for results to be declared. Once NCHMCT JEE 2018 results are announced, candidates are allotted a rank and basis this rank they are called for NCHMCT JEE counselling. NCHMCT JEE counselling process has three rounds. The first two rounds of counselling are web based whereas the third round is called Spot Round wherein aspirants need to physically appear at the counselling centre allotted to them. For further details please refer
https://www.shiksha.com/hospitality-travel/hotel-hospitality-management/exams/nchmct-jee/counselling.

Yes you will get admission. Choose your college wisely and the branch you may get based upon previous stats. Then fill up your choices accordingly. Upvote if it helps.

Please specify your question clearly. But what I understand I will answer for that. If you are asking about the college admission through JEE Mains in engineering colleges. So, you will get admission in any engineering college with any marks but if you want government and good private colleges along with favourite branch. So, you need to work hard and need to get best rank. Otherwise, you will get below or average college of engineering.
All the best.

Hello,
I hope you are doing well. If you qualified and cleared the cut-off of JEE Mains in your category, then you should not take the drop because this will waste your time and you will suppose to start from scratch. Try to go for counselling and apply for government college, if you will not able to get the government college then go for some good private college but I suggest you not to drop until and unless you lose an opportunity by few marks to get an IIT.
All the best.

You are likely to get NIT, but with average rank, LMNIIT with a decent branch, though don't go with NIT less than 15th position among them. Moreover, shortlist the colleges according to their last year cutoff.

It will be somewhat difficult for you to get CSE with this rank, but yes you can easily get ECE with this rank without any hesitation.

Your rank should be 20k.

Coaching does nothing, it is only for the problems that you come across and can't be able to solve it by your own. Self-study is the best study and no one can beat that the only thing required for the JEE is smart work rather than hard work and for that only coaching institutes charge so much of fees.