Greetings Subham,
It depends from College to college and also the management decides wether to procede classes in Saturday or not.Generally it doesn't occur on Saturdays for Govt Polytechnic College but it may happen that it is open on Saturday.But if it is open also then it will be till half the day.
Regards Ankit!!
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile