Science

For the Central Government Jobs like CBI or IB - you need to be graduate & appear for UPSC exams to qualify.

Hi Ayush,
This is for all universities :
For B.TECH CS - requirement is PCM in class 12th.
For BCA - 12th with minimum 50% marks in total (any stream) and also having Mathematics as subject in the qualifying examination.

Yes you can add.

Actually, when you go for M.Tech almost all the courses are related to computer. So, you should have basic knowledge about it. It doesn't mean ECM branch will be useless. Some courses require the knowledge of both CS and ECM.

Yes, you will get it definitely. You can manage a sheet everywhere with this cutoff in 12. Apply in the college and manage a seat. Good Luck to you. Wildlife biology is a great subject. Go for it.

Hi,
Yes, indeed you can. After all forensic science does include fields like biology, biochemistry, genetics, bioinformatics, microbiology which you would have studied already during your UG. This let you to pick up the subject sooner.

Hi,
Please see the difference between the qualifications required for PRT / TGT / PGT teachers. Essential Qualification for (PRT) Teacher: Senior Secondary (or its equivalent) with at least 50% marks and 4-year Bachelor of Elementary Education (B. El. Ed.)
Essential Qualification for Trained Graduate

Here is the list of top colleges in Karnataka which offers B.Tech in Biotechnology
https://www.shiksha.com/b-tech/colleges/b-tech-in-biotechnology-engineering-colleges-Karnataka