Exam

Hello Pawan,
If you have appeared but could not get admission then you can surely appear again. There would be normally date of birth or number of attempts restrictions but subject to this, you can apply.

Hello Santosh,
You have not mentioned about your current status. However, it's always good to start early. You can do structured and detailed studies and be assured of a good college.

Hello Shreyas,
It's great to know that you have already started search even though you are in class 11th. It appears that you are from Maharashtra. You will need to score around 250 in JEE Mains to get your desired branch.

Basics of computer are must to qualify for banking exam. You can pursue ADCA i.e. advance diploma in computer application from any recognised training institutes.

You have to cover up the syllabus of engineering from 3rd year. 60% questions are taken from 3rd year while the rest 40% are taken from the remaining engineering years or from some competitive exam books for GATE.

No Sudeep, colleges in India don't follow this practice. You have to clear your exams including your compartments before applying.

JBIMS and KJ Somaiya do not accept MAT. Under MAT, you may try for the following colleges:
https://www.shiksha.com/mba/ranking/top-mba-colleges-in-india-accepting-mat/2-2-0-0-306