MBA Entrance Exam

Dear Hansraj,
I.Eligibility: Bachelor degree in any discipline. Candidates appearing for final year bachelor degree examinations can also apply provided they complete all degree requirements by September 30, 2018. All AICTE programme require a test score and 50% in graduation.
II.Selection Procedure:

A composite score of 600 or above in the Management Aptitude Test (MAT) conducted by AIMA in either September - 2017 / December 2017 / February 2018Or,
A composite score of 450 or above in GMAT 2017 OR 2018
Or,
A composite score or 300 or above in GRE 2017 OR 2018
Or,
70 percentile or above in the Commo

You can apply for MAT-2019 by December 2018. Questions will be from -
Language Comprehension
Mathematical Skills
Data Analysis & Sufficiency
Intelligence & Critical Reasoning
Indian & Global Environment.

Your score is on the lower side, it will be difficult to get calls from good tier-I and tier-II colleges. Better to try MBA entrance exam next year or look for other entrance exams score.

No, students receive call after CAT results are declared. After CAT result declaration, institutes call candidates based on the criteria and seats allocated for that particular year.

PUMBA doesn't offer MBA-IB. Your CMAT percentile is low, so its difficult to get admission here.
If you wish to repeat then you can secure good score next year maybe around 95 and above percentile.

CMAT is an all India level exam so seats are not reserved for any category like OBC, SC. On the basis of merit the seats are distributed. The all India cutoff for Dalmia is above 99.5 percentile.

70 percentile is quite low.
But, you can try for PGDM, 50% weightage is given to the past academic records and entrance exam marks.
So, you can try by clearing the GD and PI round.