Engineering Entrance Exam

Yes, you can. The criteria of 75% is only for providing NITs.

Considering the cut-off and going by the pattern of quite some years, yes, you may get an NIT. But, top NITs like Warangal, Suratkhal is a rare chance.

The cut-off marks for JEE Mains is 45 for OBC- NCL. So, you have qualified for the JEE Advanced, prepare for it.

If you think you can manage the preparations without losing concentration, then go for it. Your class 12th marks suggest that you have the calibre to score 100+ marks in JEE. So, if you can prepare without being frustrated, go for it.

No, for colleges accepting JEE Mains score, the marks or rank of JEE Advanced hardly matter. They are just interested in JEE Mains score.

If you have appeared for JEE Mains then further proceed with your preparation for BITSAT because they have same types of questions but the level is a little bit high so prepare well.

Only Gujcet and board marks matter for admission in LD College.
GUJCET 2018 cut-off will consist of the minimum marks that all candidates will be required to secure for admissions into the participating institutes. The concerned authorities will prepare the cut-off ranks to screen the admission process. Many factors will be considered during the determination of the cut-off. The opening and closing ranks for admissions will be available for all institutes and courses. The cut-off ranks will be different for each institute and course.

https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor
Kindly visit the link mentioned above.

ACPC will be made with the help of rankings and it is based on GUJCET.