This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anesthesia Machine, Subject name: Anaesthesia
[{'content': 'Composition of soda lime includes all except - \nSelect and explain. \nA. NaOH, B. KOH, C. Ca (OH)2, D. Mg (OH)2', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Mg (OH)2 Soda limeo Most commonly used CO2 absorbent. The composition of Soda lime is: -Ca(OH)2-94%NaOH-5% (Catalyst)KOH-<1%Silica-To prevent dust formationIndicator Moisture Granule size-4-8 mesho 100 gm of sodalime can absorb upto 23 litres of CO2. Now a days a good quality sodalime with prolonged life, Durasorb is used which is pink when fresh and becomes white when exhausted.", 'role': 'assistant'}]