CBSE 10th

You must take up arts stream for now.

Hi,
you will get call only on the basis of CAT score say 90 percentile or above.
Academics is considered only after getting a call for the purpose of admission.
Having work experience is a good thing to get a weightage during admission stages.

Eligibility criteria for appearing in XAT to seek admission in XLRI is a recognised Bachelor's degree of minimum three years duration or equivalent in any discipline. Those students who are completing their final examination by June in the year of start of MBA degree at XLRI are also eligible to appear for XAT.

Placements eligibility set by the companies as some of the companies set the eligibility criteria min. 60 % in 10th , 12 th and graduation but not all the companies and many companies don't set any eligibility criteria , Students can directly sit for GD and interview .
College don't set any criteria for placements

IHM-Pusa is the best ranked college in India. You should try for it.

Till now minimum requirement for BITS MBA was 60% in graduation. So if the policy remains same then I am afraid that there is no chance for BITS MBA.

Can I know the reason for that gap of 1 year between your class 10th and 12th?