Residuary powers (interpretation): Who finally decides whether a matter falls within the residuary field (not enumerated in any of the three lists)? Distinguish between allocation of residuary power and the interpreter of constitutional entries. Choose the correct deciding authority.

What is being asked? Which organ ultimately determines if a subject is residuary.

Concept/ApproachWhile residuary power of legislation is vested in Parliament (Article 248; List I Entry 97), the final interpreter of whether a particular matter is covered by specific list entries—or is truly residuary—is the Judiciary, through constitutional adjudication.

Final AnswerJudiciary