CAT

There are very less chances of getting a call.

Hi, Some of the good mobile apps for CAT preparation are: Alphanumeric app, Byju's app, Handa ka Funda, etc. These can helpful for preparation tips and guidance.

Yes, considering your academics and sports achievements , you have a good chance to get a call. CAT cut-off is 80 percentile
All the best!

Everyone will get the same topic and you need to work on current affair issues. For PI, as you are a fresher, most of the questions will be related to your academic subjects and final year project.

Even though you are NC OBC, a score of 65.83% in CAT is little bit on the lower side to get a reputed B-School. I can suggest you good colleges which may give you a call letter when you are very lucky.
Some colleges are :
1) IIFM Bhopal
2) NIT Surathkal
3) DSM,Delhi technological University
4) NIT Warangal
5) NIT Trichy (For this college alone, you need more than 100%) luck.

Yes you can expect a call. 50% weightage of CAT score and 50% of academics is considered. Be aware of recent events, read newspapers and prepare well. All the best.

You can re-appear for the CAT exam in 2017. You can also apply for Feb MAT exam.

Yes, you are eligible for admission.

You can apply for IFMR, Welingkar, K J Somaiya, XIME Bangalore and similar colleges. If you have a good work and academic profile than you have high chances to get admission in these colleges. Check for ROI, infrastructure, past placement records before making any decision. Good Luck.