Engineering Entrance Exam

There are two options available for you-
1) You may opt for private colleges like VIT or SRM (if you have enough money).
2) You may think of taking drop and work hard to get better next year.

Yes, a lot of jobs are there. Only you need a degree. Based on your degree, you will get the job. For example, if you will do electrical engineering, you will get a job related to electrical like machine works and all.

Yes, you can. So, start preparation for the GATE exam.

https://www.shiksha.com/b-tech/resources/upsee-college-predictor
Please go to the college predictor link, I am sharing here to know about the college you can get. Good luck.

You can use this link to check out your chances of getting this college. This is shiksha's official college predictor tool based on previous years data. Hope this helps. All the best.
https://www.shiksha.com/b-tech/resources/jee-mains-college-predictor?utm_source=cconnect&utm_medium=CR_JEECP&utm_camp

No, you can't not even if you have internationally published and recognized projects. They want GATE. I don't know if it's an IIT thing or an MHRD thing but a person who spends most of his/her day doing really good projects has little time to prepare for exams like GATE and are usually not the type

If PCM score is 50%, then you can get admission in ICEM. Your JEE score is less, so you can apply for the direct admission process.

Yes, it is compulsory to clear cutoff of every subject to clear JEE advance. You cannot qualify JEE advance with the help of one or two subjects. The cutoff of every subject is class 12-14 marks per subject, which can vary depending on the cutoff.