Was this an appropriate response from a lecturer?

Had my first session yesterday and it was a 3 hour session with 3 different courses. During the seminar the lecturer asked a couple of questions and no one was answering apart from some people from my course. When it got to around 4 questions we answered, she told us to “shut the f*** up and let other people answer”. Bearing in mind no one else even attempted to answer. Was this an appropriate response from her?