Question

. The flame under a whistling cooker is suddenly put off. The whistle is then removed to release the steam and the lid is forcibly opened. You see water still boiling in the cooker even when no flame is underneath it. Explain why?

Answer 1

the water in the pressure cooker is firstly boiling even greater than 100°c due to pressure.. so when the flame is put off then the steam is released thus the temp. and pressure also decreases and the boiling point also decreases. so the water which was boiling at higher than 100°c is now boiling actually at 100°c which is the boiling point..

Answer 2

basically when we put water in awhistling cooker it boils more than 100 C because it is under pressure .... and the steam is removed so it now boils on its boiling point .....that is 100C