Do b.tech as you can appear for all

Dear

I understand that you are focus for SSB but side by side you should have plan B as in professional degree which give you support if you not able to crack the exam or Interview.Accordingly in engineering you may consider these options

Civil
Aerospace engineering
Solar
Food technology
Electronic and communication or telecommunication
Computer science
Automobiles engineering or Mechanical

apart from Engineering

Economics Hons
Law
BBA
Clinical psychology.

All the best

Dear Krutika
Any branch is ok but you need to concentrate on technical skills, Group discussion, general knowledge, soft skills etc..,
All the best.

Any
Or mainly technical