Hi Salman,

For CDS the basic educational eligibility is to have graduation degree in any field.

Similarly in case of engineering you can choose any stream of your intrest because intrest is more important than anyother point.

There are different options in engineering as well like-

mechanical; civil; electronics&communication; it;biotechnology; computer software; fire&safety; aerospace; architecture; etc.

So, just choose wisely giving preference to your intrest and do prepare for cds too.

Good luck.