Form Interrogatories are a list of questions on a court form. This guide contains forms and instructions for propounding Form Interrogatories on your opponent in a California civil case.Sec. 1. Instructions to All Parties. This guide contains forms and instructions for responding to interrogatories (either form or special) from your opponent in a California civil case. The date when such injury or injuries were sustained, the place of occurrence and the nature of the accident or incident causing such injury;. A: You are permitted to ask an unlimited number of Form Interrogatories. What Is the Purpose of Interrogatories? What is a form interrogatory? How do I fill out form interrogatories? Below are example interrogatories in many different types of personal injury cases for you to use to help you prepare interrogatories in your case.