Exam

You must be a graduate with the following requirements as per the category
(overall Cat score, sectional cutoffs, 12th %, 10th %)
GEN 90 80 60 60
OBC (NC) 80 70 60 60
SC 65 50 55 55
ST/ PWD 55 40 55 55
The process will consist of the following with the given weight ages.
Personal Interview 45%
CAT 35%
GD/WAT

I couldn't get you actually how much composite score in MAT out of 600? Here they will accept if you have more than 60 percentile.

There is not much difference as basic knowledge is concerned. As a commerce student:
1. You can work on fundamentals.
2. Do practice regularly.
3. You should solve mock test papers from CA with maximum accuracy.
4. You need to be in touch with your mentor or teacher.
5. You may join any coaching classes.

Around 700-730. Varies every year.

It depends upon your stream. You must have biology as a subject in class 12th to appear for NEET exam, which is minimum requirement of this exam.

Mathematics is not that difficult to crack. You should practice as much as you can.
Here are some tips:
1. Quants: You need to understand these concepts and practice questions with cross category.
2. LR: Make boxes while solving and practice as much as you can.
3. DI: Decimals like 1/11, 1/12, 1/13, 2/

The cut off should be around 195 to 200 for NMAT and for IBSAT there is no cut off