Engineering Entrance Exam

If you really want to prepare for JEE Mains then you are at the right place.
For physics you can study NCERT, HC Verma, for chemistry you can study Pradeep, NCERT and Arihant and for mathematics you can refer RD Sharma, NCERT, NCERT Exempler and book by ML Aggarwal.
There is a lot of competition in the outside world, so be prepared. If you want to get admission in a government college then you must have above 210 marks out of 360.

I am not discouraging you but I would suggest you to go for B.Sc and proceed ahead. If you accept my suggestion, then either go for B.Sc in Physics or B.Sc in Maths.
Feel free to ask more.
Good luck.

Don't worry as every body face hard times in their study period, so keep calm and concentrate in your 7th semester. After that, when you are in 8th semester, you are eligible to clear your backlogs, so first complete your 7th semester, then start your backlog study with 8th semester and appear for the same.
All the best.

As per JEE Mains eligibility in class 12th, you must had 3 subjects i.e. PCM. As you have said that you had arts, so you are not eligible for JEE Mains. If you are not satisfied by my opinion, you can visit mains site: jeemain.nic.in

If you are preparing for JEE, so please be alert.

You should pay attention to your B.Tech degree. But, from 2nd year you should start preparing for GATE.

You must refer to the textbooks deemed valuable for the preparation of JEE Mains exam and work hard. Study according to the CBSE curriculum.
Good luck and all the best.

You can check the below mentioned link:
http://jeemain.testbag.com/exam-analysis.php?tp=2&eid=JEE-MAIN&val=JEE-MAIN-2017-Exam-Pattern

First, you can do NCERT so that the concepts should be clear in mind. You can also prefer some books for practice like: RD Sharma for mathematics, DENESH or HC Verma for physics and for chemistry, NCERT is very important. You can also solve previous year question papers.

You can check the below mentioned link:
https://www.shiksha.com/jee-mains-college-predictor