if you put a pressure cooker on a flame, it starts whistling after a few minutes. why does this happen?
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Answer:Due to pressure which has been created by flame
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Answer:As its name suggests, the pressure cooker develops a high pressure inside.When that happens, you should reduce the heat to reduce the pressure that is being produced. To make it easy for you to know when, the valve is designed so that it makes a whistling sound when it releases excess steam.
Explanation:mark me
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