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: Social & Preventive Medicine
[{'content': 'All are true regarding bleaching powder, except – \nSelect and explain. \nA. Contains about 33% of available chlorine, B. It is a stable compound, C. White amorphous compound, D. Strong bleaching agent', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Bleaching powder : -\n\nBleaching powder is also known as chlorinated lime.\nIt is a disinfectant mainly used for disinfecting\n\n\nWater\nFaeces\nUrine\n\n\n\nIt kills most of the organism when used in strength of 1 to 3%\nThe chief drawback of bleaching powder is that it is an unstable compound and loses its chlorine content on storage.\nIts action is rapid and brief\nA good sample of bleaching powder contains 33% of "available chlorine".\nIt is a white amorphous powder with a pungen smell of chlorine.\nWhen mixed with excess of lime it retains its strength, this is called stabilized bleach.\nBleaching powder should be stored in a cool dry place.', 'role': 'assistant'}]