Exam

Yes, you can easily do that. I only prefer self study for the JEE Mains preparation as self study is the best and most effective study, the only thing you should do is to get the blueprint for the JEE paper and study accordingly.

The best coaching center in Bhopal is Mitesh Rathi coaching center, teacher their have good experience for preparing child for JEE Mains paper and have good idea of pattern and smart work for the student to have greater efficiency.

You have to appear this year in November 2018 for examination to get admission in B-Schools.

However, you may not receive a full refund but don't settle for less than 50% too. Take the receipt and write an application letter properly stating the reason. If they refuse to return your money, then do not hesitate to proceed to consumer court.

Well, you can follow the link and register on the Dayanand Sagar University for your preferred program. They did not mention the last date but it may get close soon so hurry up.
Follow the link:-
https://www.dsu.edu.in/admission/pg-registration.

See, if have done 12th from UP then you will be considered as UP student in JEE Mains and you will be given home state quota in NIT Allahabad and more preference in UPSEE.

Kaka Deo is the best coaching center in Kanpur. Other than that, you have take tuition from different teachers as some teacher is special in different subjects.

No, first you have to pass class 12th then only you will be eligible to take IPMAT exam.

I'll prefer you to change your career field or if not then take admission in any private college and have good command on coding skills and on your subject.

Yes, sure you can. But what you mentioned in your first line should be taken care of I. e. , for clearing Mains, your basics must be very strong and for that, your have NCERT books which should be mugged up really well. So, once your basics will be clear JEE Mains is not that of a big deal.