Anaesthesia The second gas effect is A Displacement of N20 by Oxygen B Displacement of oxygen by N20 C Removal of oxygen by N20 from alveoli during recovery from general anaesthesia D Facilitation of inhalation of Halothane by N20 💡 Explanation The second gas effect is ✓ Correct Answer: D. Facilitation of inhalation of Halothane by N20