B.Tech

To get admission in any IIT, you need to qualify JEE advanced. If you have qualified JEE Mains, you can write JEE Advanced, but you need to qualify that with a great score (rank) to get IIT Bombay, as it is one of the top IITs.

12th exam marks is one of the eligibility conditions to get admission through JEE exams. You can't get admission in IITs unless you clear the exam with good rank.

You have to score good marks in GATE exam then only you can get admission in any good college for M.Tech as you have scored less, you can take one more chance, prepare well and take GATE exam again next year so that you can score good marks.

Delhi technological University conducts lateral entry entrance test DTU LEET for direct admissions to the 3rd semester of 4 year B.Tech programmes offered by DTU under the lateral entry scheme. It is a gateway for Diploma holders to get admissions directly in the second year of the undergraduate B.Tech programme.

Yes, you are eligible to fill the form of patwari Rajasthan exam.

Yes you can do the same.

Use this link:
https://www.shiksha.com/college-predictor

Use this link:
https://www.shiksha.com/college-predictor.

Yes, you are eligible but you need to score a good rank in GATE for colleges like IIT & NIT. For BITS, there is a separate entrance exam for M.Tech.