Electrical Engineering

Yes, you can easily get a college to pursue Diploma. You can also get into a top government college if you appear for an entrance exam called JELET.

There are many courses. You can go for PLC SCADA, Mechatronics and embedded systems. You can also go for computer languages if you want for additional knowledge.
Good luck.

In Delhi, following are the best options for you:
DTU
NSIT
JMI
GB Pant

If you have an honest interest in mechanical then go for it, otherwise, don't waste your four years in mechanical, you might end up cursing yourself as it might be evergreen, but if done from an average college and you are an average student, you might end up with 15K salary.
Nowadays, CSE is the preferred branch as we are moving towards computerized and digitized world even EE and civil would be the nice choices.

Your choice is good but without mathematics, it is not successful in electrical or computer engineer. A few knowledge in mathematics and you can get big success as mathematics has a role in writing the program.

Government polytechnic Mumbai, SH Jondhale Thane, VPMS Polytechnic, Vivekanand Education Society Mumbai, Adhesh Polytechnic College are top college for polytechnic.

You may able to get research jobs in R & D organisation after B.Tech in electrical engineering but you may have to do M.Tech or Ph.D for long term growth as a researcher.

Hi,
Go through the below-mentioned link:
https://www.resonance.ac.in/reso/news/JEE-Main-Branch-Predictor.aspx