Question

Q15. Regular cooking in vessels open to atmosphere takes long time in mountains. Therefore, cooking in pressure cookers is advised.
Now, answer the following questions:
a) Why does cooking in vessels open to atmosphere take long time in mountains?
b) Why does cooking in pressure cookers take less time?
c) Name any other advantage of using pressure cooker instead of cooking in open vessels.

Answer 1

Answer :

a. Because hot vapour come out from the vessels at same time and it take more time to cook food.

b. Because hot vapour are inside the pressure cooker.

c. By cooking in pressure cooker we can save our time.

Answer 2

The pressure cooker works by trapping the steam produced from boiling the cooking liquid inside the vessel. Through retaining this steam in the cooker the internal pressure and temperature rise quickly.

This is different from cooking in the open where the internal pressure and temperature are lower and thus takes longer to cook than when using the pressure cooker.