What is recusal or judicial disqualification of Judges?

GS Paper 2: Topics Covered: Separation of powers between various organs dispute redressal mechanisms and institutions.   Click here Context: Chief Justice of India (CJI) N.V. Ramana has recused himself from hearing a petition filed by Andhra Pradesh accusing Telangana of depriving its people of their legitimate share of water for drinking and irrigation.   …