B.Sc

Both are good. In B.Tech you will get a good package in comparison of B.Sc. But it also depends on your interest. Which career line you want to choose also help you to choose your course.
Best of luck for your future.

I don't understand about PCM. Please clear it first, if your registration is complete you can't change the subject manually but you can also apply to change or cancel from university.

If you want to continue, you can take a re-exam,otherwise complete b.ed from an open university, that's all. Your career will be secured.

I think MBA is better than other programs. MCA is not that important.

Yes, you can. you know that B.Ed is a regular course. so ,if u want to continue from distance. please contact some kind of educational centre .who already authorised some NCTE and UGC approved universities. You can directly admission through online also. Universities are MDU,Haryana. Kurukshetra ,Haryana. etc etc. so. I think a better option is admission those universities through some educational centre.

Hi Nitish,
List of colleges offering B.Sc Aviation, kindly refer the link below:
http://goo.gl/VEKn1F
Hope this information helps. Please feel free to revert.
Wish you luck.

Chemistry, Botany, Zoology, computers , Math, Bioinfo, Biotech, Med sciences.

If you want to study biology then chose life sciences. If you interested on physics and computer then go for physical. You will learn chemistry as main subject in both.