Physics
Pressure Cooker cooks faster because

It cooks the food at low pressure
Higher temperature is attained for cooking
The material of the cooker is a good conductor
Boiling point decreases with rise of pressure

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Physics
Which of the following is not a property of heavy water ?

It produces corrosion
Freezing point of heavy water is higher than that of ordinary water
Density of heavy water is higher than that of ordinary water
Boiling point of heavy water is lower than that or ordinary water

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