Related Clues:

• Graded item
• Type of tube
• Courtroom activity
• Beta version, e.g.
• Word with litmus or acid
• Class struggle?
• R&D procedure
• Tryout
• Surprise quiz found in the eight longest puzzle answers
• Multiple-choice, e.g.
• Legal case
• Put out a feeler, maybe
• Means to a diagnosis
• Reason for a cram session
• Acid follower