Question

Why pressure cookers are must for working particularly in hilly area

Answer 1

⛦Hҽɾҽ ɿʂ ү๏υɾ Aɳʂฬҽɾ⚑
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The pressure at any level in the atmosphere may be interpreted as the total weight of the air above a unit area at any elevation.

At higher elevations, there are fewer air molecules above a given surface than a similar surface at lower levels.

That's why, pressure cookers are must for working particularly in hilly area.

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Answer 2

the food inside it does not get enough heat to get cooked and thus food is difficult to cook at high altitudes . Using a pressure cooker at such conditions helps increase the boiling time as the pressure inside the pressure cooker increases due to the vapour produced inside