the beans are cooked earlier in pressure cooker because
1) boiling point increases with increasing pressure
2)boiling point decreses with increasing pressure
3)extra pressure of pressure cooker softens the beans
4)internal enegy is not lost while cooking in pressure cooker T=100°c, T>100°c,T<100°c and T=273
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the answer is 1. as the boiling point increase you will be able to deliver more amount of heat before the temperature stabilize at it boiling point
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