Who appoints “ad hoc” Judges of the Supreme Court?

Answer: [D] Chief Justice of the Supreme Court with permission of President

If there is a lack of quorum of the permanent judges to hold or continue any session of the Supreme Court, the Chief Justice of India can appoint a judge of a High Court as an ad hoc judge after consultation with the chief justice of the High Court concerned and with the previous consent of the president.

This question is a part of GKToday's Integrated IAS General Studies Module