This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
[{'content': 'Hardening of sodalime done by? \nSelect and explain. \nA. CaCO, B. CaSO4, C. BaSO4, D. Sodium silicate', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e.,Sodium silicateSoda lime is a mixture of chemicals, used in granular form in closed breathing environments, such as general anaesthesia to remove carbon dioxide from breathing gases to avoid hypercarbia", 'role': 'assistant'}]