I've completed B.Sc with 45% marks. Am I eligible for BTC or B.Ed entrance exam?

I think you are not eligible, because the basic eligibility criteria demands for at least 50%, so you are not eligible for BTC or B.Ed.

Hi, Education Qualification for BTC or B.Ed Graduation in any discipline from any recognized university or college with at least 50% marks in aggregate. Sorry, you are not eligible for both of the courses. Thanks.

To be eligible to apply for BTC or B.Ed entrance, you need to have 50% marks.