Is it all right to ask pointed questions to other participants during a GD?

Interview Preparation
#1

It’s fine to ask questions for clarification, but not to play devil’s advocate and try to convince them that they’re wrong. You stymie the GD’s flow by playing the devil’s advocate. The sharp questions agitate the other person, and the GD’s quality suffers as a result. This will reflect negatively on you and work against you.