Electronics and Communication Engineering

Hi Karan,
Firstly, It depends upon the cutoff marks for your shortlisting in these branches. To get an idea, please go through this link:
http://www.bitsadmission.com/cutoffscores2017.aspx
For the understanding of the difference, between the two branches, both have origin in Electrical Engineering. But in detail, Electronics and Instrumentation Engineering deals with Electrical technology and machines, circuit analysis, electronics, electromagnetism, electrical engineering materials, instrumentation etc while ECE consist of analog transmission, basic electronics, solid state devices, microprocessors, digital and analog communication, analog integrated circuits, manufacturing of electronic devices, circuits etc. BITS Goa and Hyderabad are both at par with each other with the aspect of these branches.
Best wishes.