B.Tech

For NITs you should have a percentile of around 97 percent in JEE mains for open category and for any engineering college in India for a open category student it is mandatory to get a percentile of over 90 to get into software based course in the college.

Yes you can join an engineering college after completing Diploma, by writing an entrance test conducted by the government.

Yes absolutely, after Diploma students can directly come to B.Tech 2nd year by writing an entrance test, most states conduct entrance test after Diploma, Telangana conducts ECET for Diploma students to join B.Tech colleges through lateral entry.

You can go for M.Tech in mechanical engineering and also qualify GATE exam or CSIR NET exam in any subject like Physics or Maths. You can go for Ph.D. in any subject of interest like Physics Maths etc. Besides, you can go for Diploma course having short as well as longer time benefits.

Few of the options I would like to suggest
BITS Pilani
VIT University
Manipal University
KIIT
BIT Mesra
Thapar University
RV College of Engineering, Bangalore.

You should apply in upward movement of REAP.

To get into college of engineering Pune (COEP) minimum required CET score out of 200 is 170+. JEE score is not considered for admission to COEP.

The B.E. course total fee is about Rs. 5.20 Lakh. The placements in college are average and have the average salary package of Rs 3 LPA, while the highest salary package is about Rs 12 LPA in CSE. Mechanical placement are very poor and below the average.

Yes you can apply for the NET examination. Aspirants may appear for the examination with the subject in which they have completed their post-graduation or related to that subject as per the UGC NET exam guidelines.

6-year Integrated B.Tech of Techno India University is valid for employment and higher education purpose. TIU is offering 6 years integrated B.Tech in CSE after passing the Secondary School Leaving Certificate (SSLC) / tenth standard/equivalent examination, from a recognized board, with Science and Mathematics as compulsory subjects.