Types 6 and 7 are much more combative: in type 6 questions the asker explicitly attempts to force the minister to concede/accept a point that would undermine some government stance, while type 7 contains condemnatory questions that prompt the minister to justify a policy that is self-evidently bad in the eyes of the asker.
type 2 constitutes tamer narrow queries that require the minister to simply report on non-partisan matters of policy.