B.Tech Eligibility

No, it's impossible to get seat in JNTU with 20000 rank. Rank must be below 3000.

You are supposed to write an entrance exam for it after completion of your class 12th.You need to score well to get eligibility in that particular college.So do well and achieve the best.

The procedure for this type of admission is lateral entry admissions. Please check their websites regularly when they will start their admission procedure they will be open options for lateral entry admissions and get admission there.

You just have to visit their website for latest updates and they will open the option for international student admissions you can directly apply over there or you can call and contact the office personals during office hours .

The minimum age for admission is 17 years, and the maximum age for admission is 25 years.

Yes, you can apply.
Check out the link below for more details:
https://www.shiksha.com/b-tech/course/b-tech-lateral-entry-college-of-engineering-pune-shivaji-nagar-204728

Check out the link below for all the details :
https://www.shiksha.com/b-tech/course/b-tech-lateral-entry-college-of-engineering-pune-shivaji-nagar-204728

As per the information available on GITAM college website the admissions in B.Tech programs are based on the performance of GAT (UGTP) an entrance test. Further, 60% marks are required in PCM and aggregate at class 12th level. Hence, GITAM does not offers admission to engineering Diploma holders.

Yes, there exists an entrance exam for B.Tech part time courses.
Hope, that answers you question.
All the Best.

You are not eligible to take admission in NIT. Better try some other private institutes.