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A pressure cooker works on the principle of

  1. Elevation of boiling point of water by application of pressure
  2. Making the food-grains softer by application of pressure
  3. Making the food-grains softer by application of pressure and temperature
  4. Keeping the food-grains inside steam form a longer time

Answer (Detailed Solution Below)

Option 1 : Elevation of boiling point of water by application of pressure
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Detailed Solution

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CONCEPT:

  • The pressure cooker is based on the principle that the boiling of water increases with the increase in pressure.

EXPLANATION:

  • When we give heat to the pressure cooker then due to an increase in temperature the steam generated in the vessel.
  • Due to this generated steam, the pressure inside the vessel increases. So the food gets cooked soon.
  • Thus by the application of pressure the boiling point of the water increases. Hence option 1 is correct.
  • There is no relation between food-grains with the boiling point of water. So options 2, 3, and 4 are wrong.
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