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Thermal Properties of Matter — Physics STD 11 Science — Question

Maharashtra BoardEnglish MediumSTD 11 SciencePhysicsThermal Properties of Matter2 Marks
Question
Why is cooking faster in pressure cooker?
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Answer

  • Pressure cooker operates by expelling air within the cooker and trapping steam produced from the liquid. (mostly water) boiling inside.
  • Due to high internal pressure, boiling point of liquid increases and liquid boils at temperature higher than its boiling point.
  • The increased boiling point allows more absorption of heat by liquid and steam formed is superheated.
  • As a result, food gets cooked quickly.

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