There is no specific dress code as such but you are expected to be neatly dressed and with good shoes and sandals. You are expected to keep your hair pinned up specially when you are going for postings.

Apart from this, you should have a buttoned apron which should be neat and clean.

In some colleges in periphery you are expected to only wear salwar/leggings and kurti as a rule but in colleges in good cities you get the liberty to wear any type of dress. They don't encourage you wearing one pieces or dresses. You can wear them outside the college.