At such hearing inquiry may be made concerning all estates in which original or ancillary administration has been taken out in such court of probate, in respect to the following: The number of administrations applied for; the date of each such application; the name and address of each executor, administrator and trustee appointed by such court; the date of filing of the inventory and appraisal of each estate; the appraised value of each such estate; the reason for such failure to furnish any document or information referred to in section 12-16, and the failure of such judge to send to said commissioner any other information required by statute to be so furnished relating to the assessment and collection of any tax due the state.