Exam

CATIA is a job oriented course. It will be a good idea if you complete CATIA, do a job and then pursue your MS or even MBA. If you get an year back, doing CATIA will help in improving your profile.

Yes, you can crack UPSC without any coaching if you are perfect in your studies and preparation, otherwise coaching is necessary.
For essay writing you have to do a lot of writing practice.
But, who will tell your mistakes in answer writing, who will correct you. How will you know whatever you have wr

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 top 50 B-schools of India do not use MAT score. Therefore, if you only appear for MAT, you will miss the opportunities to do MBA from top B-schools and it may impact your long term career aspirations.

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

You can visit the below mentioned link:
cbseresults.nic.in