B.Tech

For admission in M.Tech. in Compuer and System Sciences you need to have 55% and need to have Mandatory courses like M.Sc.( Mathematics, Statistics, Computer Science, Operations) , B.E. / B.Tech, MCA.
Eligible candidates need to appear for the Entrance Test conducted by the University.

Hello Dear,
For UPSC, you need to be a graduate from UGC recognised institutions. So, you can definitely participate in UPSC examinations.

Instead of doing part time B.Tech you should go with the part time M.Tech because Bachelor degree is for basic concepts in any course Bachelor degree will give you strong base form beginning to advance. So, as of my point of view, you should go through with full time B.Tech course and part time m tech course.
All the best.

Go through the college review below for details:
https://www.shiksha.com/college/Noida-institute-of-engineering-and-technology-greater-Noida-49361/reviews
to know the exact scenario for faculty and placements get in touch with the current students through social media or in person.

No, its not possible but if you are looking for graduation there are many Diploma courses running across many universities in India. So, you can try for it.
All the best.

For B.Tech from BITS, you must have aggregate percentage of 75 percent in your schooling and you need to clear your BITS entrance exam. Since, you have low marks in your school and chances are low.

As per the rules, you don't have any type of restrictions. You can opt for any PG course after BE.

Hi,
As you cleared class 12th from CBSE with this percentage it is a little difficult. To get the above course minimum 50%-60% marks is a must.

Yes, any degree which is recommended by AICTE, or have certification from AICTE is valid for higher education in Canada.