Full Time B.Tech

Most importantly, BTech distance education is not valid in India. You must go for regular BTech degree courses as they are well-recognized and approved, and hold a lot of value in the job market and otherwise.

1) In regular B.Tech, you have to go to college and maintain a good attendance percentage to be eligible to appear for the semester exams. On the other hand, in distance B.Tech, you have to go to college only to appear for exams.

2)  In B.Tech, not all subjects are easy. In most of the subjects, you would need some expert guidance to understand them. In regular B.Tech, you can get such expert guidance from the faculty members and through lab practicals. However, in Distance B.Tech, such guidance won't be available.

3) In regular B.Tech, regular laboratory sessions help to understand how the theoretical concepts in books apply in the real world. However, this option isn't available in Distance B.Tech.

4) In distance B.Tech, there is no scope for on-campus placement. Most of the companies demand for regular B.Tech with focus on internships and final year projects. So, distance B.Tech loses quite a lot of placement options. Most of the well-known universities do not endorse Distance B.Tech. 

In short, it is better if you go for Regular B.Tech. Opt for Distance B.Tech only if you have financial issues and need a source of income to support yourself and your family. I hope I have been able to answer your queries. If so, kindly upvote this answer. If you have any further questions, feel free to revert.