California Code, Code of Civil Procedure - CCP § 2033.710

The Judicial Council shall develop and approve official form interrogatories and requests for admission of the genuineness of any relevant documents or of the truth of any relevant matters of fact for use in any civil action in a state court based on personal injury, property damage, wrongful death, unlawful detainer, breach of contract, family law, or fraud and for any other civil actions the Judicial Council deems appropriate.