B.Ed

No, you can not apply for B.Ed course before completion of you B.Sc. Degree.

Yes, if the course appears on the site, you can go for it through the entrance.

Yes, you can go for it, but both should be from different universities. Both programmes lead to different career path and different knowledge and skills. If you want to be a teacher, then it's good to do B.Ed and if you want to be an HR and interested in corporate sector, then go for MBA.

You can get good job options in schools. For more details, you can see the below link:
https://www.shiksha.com/teaching-education/course/integrated-m-sc-b-ed-in-chemistry-central-univeristy-of-rajasthan-ajmer-268798

Hi,
Eligible to apply for the JMI B.Ed. Admission-
Applicant should have a degree of graduation with minimum 50% marks (excluding B.A/ B.Sc. Vocation courses) from a recognised University or a Masters Degree with minimum 50% in any school teaching subject from a recognised University. Yes, you can apply.

Hi,
Some popular B.Ed entrance exams are:
RIE CEE
DU B.Ed
BHU UET
CUCET
IPU CET
APEdCET
BEET Exam
IGNOU B.Ed Entrance Test
For more details :
https://www.shiksha.com/b-ed-chp.

The minimum qualification required for entry into B.Ed course is Bachelor of Arts (B.A), Bachelor of Science (B.Sc. ) or Bachelor of Commerce (B.Com. ) from a recognised board/university with at least 50% marks.