Arun on his trial before the Court of Sessions says that a deposition was improperly taken by Bir Si...........

Arun, on his trial before the Court of Sessions, says that a deposition was improperly taken by Bir Singh, the Magistrate. Can Bir Singh be called as a witness and compelled to answer the questions as to the deposition which is alleged to be improperly taken?       (5 Marks)