What's a word for a group of questions asked together?

Solution 1:

A few options, some admittedly phrases and also various forms:

  • line of questioning
  • questions
  • questioning
  • questionnaire
  • a grilling
  • investigation
  • review
  • debriefing
  • interrogation
  • poll
  • survey

Solution 2:

Since your questions depend on previous questions a Decision Tree comes to my mind.

  • another resource

Solution 3:

A quick succession of many questions might be described as a barrage of questions, though that does have the implication that they came a little too fast for comfort.