MBA Entrance Exam

Absolutely not! Giving the CAT is a must, only if you are aiming all the IIMs. Else, you can appear for the other exams too like NMAT, CMAT SNAP CET, etc. as per your dream college(s):
https://www.shiksha.com/mba/articles/20-mba-entrance-exams-you-can-take-this-year-blogId-11473 kindly visit this li

Hello! It simply depends upon which B-school you want to get admission into. Those aiming the IIMs must give CAT XLRI accepts only XAT IIFT score is accepted by both the IIFT campuses (New Delhi & Kolkata), and CMAT is accepted by JBIMS, Sydenham, GIM, etc. Preferably it is advised to give 2-3 exams

No, you have to appear for XAT for admission in Xavier's.

The cutoff of IIFT 2019 refers to the minimum marks or percentile a test taker must obtain in order to qualify for the next round of selection process. The conducting body of the national-level entrance exam will release the IIFT cutoff 2019 to shortlist the candidates for the selection procedure.

Best Books for Quantitative Aptitude
How to Prepare for Quantitative Aptitude for CAT by Arun Sharma
Quantitative Aptitude Quantum CAT by Sarvesh K Verma
Quantitative Aptitude by R. S. Aggarwal
Best Books for Verbal Ability and Reading Comprehension
How to Prepare for Verbal Ability and Reading Comprehen

Anyone can give the exam, but those who are having domicile of Maharashtra, they will be given more preference over candidates from other states. All the best.

For IIMB, percentile around 95-100 would be enough, but it depends on various other factors which changes every year.

Admission in IIMB depends on whether you have received a call. If you don't receive a call, you can't get admission in IIMB.

There is no specialisation as such. One can take electives as per choice and become a specialist in that field.

It wouldn't matter if you apply as general candidate. But you will need to score atleast 95% + in order to get a good college. Also nothing else matters much than your academics.