Learn more about interrogatories, what to do if you are the responding party, what you can object to, and how much time you have to answer. Interrogatories are a helpful tool for discovery.Interrogatories are written questions which focus on any information relevant to the case. Interrogatories are a list of questions from one Party to the other. A Practice Note discussing how to draft and serve interrogatories in a civil case in Texas district or county court. You should respond to each interrogatory in the order received. Certificate of Service. Fill in all information in this section and sign before sending to the claimant. A Motion for Discovery may be filed with the Court via E-File, Email, in person, or by. You should respond to each interrogatory in the order received.