Exam

This assumption cannot be judged because every year, on the basis of exam level, the cutoff may vary in terms of high and low. So, you can try to do best in the exam with confidence.

These exams are to get admission in IIMs or business schools for MBA.

First of all, check that if your percentage is capable according to your category then you can find out the cutoff and decide for your exam.

Dear Pandey,
I think you should score more marks to get admission into a good business schools.
All the best.

Yes, you can make it. MAT score is valid for two years.
All the best.

Dear Avishek Banerjee,
To get seats in various institutions is based on your scores. You can apply for SIESCOM and wait positively because sometimes things will happen miraculously.
All the best.

CAT is conducted once a year. You may refer to details of CAT 2016 at following link: https://iimcat.ac.in/per/g01/pub/756/ASM/WebPortal/1/index.html?756@@1@@1

Yes, you can take GATE. You must complete your undergraduate education. Also, if you are planning for a job in the PSUs, I think it will be quite difficult to get through this method.

Dear Amisha,
PSAT is not mandatory, but you can take it surely. Other than PSAT, universities offer scholarships on merit basis that is you must have an outstanding profile. Every applicant is considered for scholarships at the time of application itself.