why do we need pressure cooker to cook rice at hill stations

Because, at high altitudes, the atmospheric pressure is low. This causes water to boil at a lower temperature. This will lead to the food being left uncooked.

If we use a pressure cooker, water boils at a higher temperature, before being converted to steam. Thus the food can take more energy from the water.

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cus it cooks rice faster with the heat + pressure

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