Hey Soumen,

The basic difference between engineering and polytechnic is that engineering is a 4 year course ang polytechnic is 3 year diploma course. One can opt for polytechnic after class 10th but engineering is opted after class 12th science compulsorily. Moreover, engineering is far better then a diploma or polytechnic course as you get more knowlegde and practical based skills in engineering so an engineer deserves better placements and career opinion. Hope you find it useful.

Thank you.