M.Tech

Yes, after completing your graduation you can join M.Tech biotechnology. As after graduation you will be able to study M. Tech. So, you can try to get admission in a good college.

Admission is based on the rank obtained in JEE Mains score. Interested candidates can apply online/ offline with required information. Please check for your eligibility to pursue this course from the criteria mentioned at the link provided below:
https://www.shiksha.com/b-tech/course/integrated-b-tech-m-tech-in-electronics-and-communication-engineering-international-institute-of-information-technology-bangalore-hosur-road-291407

Please specify the entrance exam for which you require sample questions, so that I may be able to populate relevant details regarding that test. Some of the popular M.Tech Entrance Examinations in India is mentioned at the link provided below:
https://www.shiksha.com/engineering/articles/m-tech-entrance-examinations-in-india-blogId-12539.

Hello Abhishek, Normally for doing PG in any branch one needs grounding in basics of that branch. Hence the answer would be no under normal circumstance. However to give students free hand entrance exam called GATE has been introduced. Here any graduate engineer can appear for any subject. Hence if you pass paper of aeronautical engineering in GATE you can seek admission for this branch in PG.