Dear Saniya,

It is advisable to choose the branch based on your interest and skills. 

There is always a good scope for student who have desired skills and knowledge. 

There is jobs available in government and private sector both

You can work in ISRO, DRDO and HAL in government sector and  L & T, Godrej & Boyce aerospace, Boeing and Airbus in private sector. 

Make sure you complete your course from top colleges to get good teaching and placements. There is lot of competition envolved to get into top colleges make sure you prepare accordingly.

All the Best!!