Form Interrogatories are a list of questions on a court form. Instructions to All Parties.This guide contains forms and instructions for propounding Special Interrogatories on your opponent in a California civil case. (b) Except as provided in Section 2030.070, no party shall, as a matter of right, propound to any other party more than 35 specially prepared interrogatories. This guide contains forms and instructions for propounding Form Interrogatories on your opponent in a California civil case. This packet provides general guidance about asking written questions to another party in the case. A party may serve on any other party no more than 25 written interrogatories, including all discrete subparts. 2. Supplemental interrogatories. It sure can get confusing with multiple parties, I agree. You number them Set 1-whatever for each party.