Your subject area may be conducive to using a multiple choice style of testing on a regular basis. A scanner can be used for quick marking. These exams have been given a bad name simply because they are quick to mark. I think many of us have forgotten that preparing a multiple choice exam properly takes time and energy. I consider a multiple choice question the toughest question of an exam.
Choices can really throw a student.
Just because a question is objective doesn't necessarily mean it is easy. Most teachers work on the 60-40 principle. They design their exams to be only sixty percent subjective and forty percent objective. There will always be arguments over the term subjective and divergent, convergent applications. Work with what your department has agreed to be the best routine.