Engineering Entrance Exam

No, you cannot appear for IIT after this much time. You need to do some other course.

Go for the branch in which you are interested. Think about the college after that. You have to learn that for 4 years. If you choose any non-interesting branch, then you can't do good. Go for interest, not for placements. Don't worry about new or old. You can apply for jobs outside also. So, choose the branch first.
Best of luck.

Here is the State wise list of Castes that come under OBC category (CENTRAL),. If you do not send a valid OBC-NCL certificate, you will be considered under the General category. From April 2012, Socially and Educationally Backward Classes-Minorities (SEBC-M) isan additional category under OBC-NCL. So, this will be considered.

Im really not sure about this,as far as I know it may be in between 8.5k - 24.5k for OC/general category in EAMCET(considering all the four branches).
As you know, this ranking preference changes according to gender and caste grade, it fluctuates every academic year.
If your rank satisfies here, you will get admission.

At undergraduate level, Bangalore Institute Of Technology (BIT) provides Bachelor of Technology (B.Tech) to the candidates who wish to pursue their career in the field of Engineering. The course is offered in nine different specializations for a duration of four years. In order to take admission, students need to pass in their 10+2 level or equivalent in concerned subjects with minimum required marks set by the college. The eligible candidates are then required to appear in Joint Entrance Examination (JEE) conducted by CBSE.

Sorry, but you won't be able to get into NITs with this rank. For NITs, you need a minimum CRL rank for 50 thousand. Above all, ranks are for eligibility of JEE Advance. Go for private colleges or either go for a drop.

Vidhyamandir and fiitjee are best JEE coaching in Delhi.

Hello,
I hope you are doing well. So here are the list of cutoff for past years in JEE Advanced exam under SC category please check. In 2017 year cutoff for SC was 64
in 2016 year cutoff for SC was 38. Now after revised result the cutorf for SC category is 45 hence this will be easy for most of the students to get admission in IITs.

Kindly refer to my answer below:
https://ask.shiksha.com/what-is-the-cut-off-rank-home-state-quota-for-general-category-candidates-in-sgsits-qna-4105847