Colleges in Mumbai

Placements are fine enough. By the way, college can't do anything if you don't have the X-factor in you. Today's market run on X-factors. The average salary lies in 5-6 lakhs.

Pristine infosolutions has different types of programmes and the fee differs from classroom training and online training. You will have to decide the mode of learning initially and then check with the institute abut the fee.

IIT, Mumbai is the best college to pursue mechanical engineering.

IIT, Mumbai is the best option.

According to me, it is from CET but I will suggest you to prepare for JEE because the news is that CET is going to be cancelled for all engineering and medical students. If you will prepare for JEE and then there will be CET, it will not be difficult for you because JEE has little higher level then CET.
All the best.

Yes, you can definitely change college after getting O grade in FYBMM. You can apply for some of the good colleges like MMK, Mithibai, NM college of commerce and economics, National college, provided if you stay in Mumbai . You can apply for any of the good colleges in SYBMM. Rest is up to your choice whether you want to continue in the same college or some other college.

The admission process for the 2016-18 academic year was conducted through DTE and under that process 15% seats were given to all India candidates. CMAT is one of the exam considered for All India seats. Other exams considered were MHCET, CAT,XAT,and MAT . You can give any of the mentioned exams to be eligible to apply for those seats. Typically the cut off is 99.99 percentile.

You can check this on the website of IIT Bombay.