Question

Which principle does pressure cooker use?

• A. More vapour pressure, increase in boiling point
• B. Decrease in vapour pressure, increase in boiling point
• C. Less vapour pressure, decrease in boiling point
• D. Increasing boiling point with steady vapour pressure

Answer 1

The correct option is A

More vapour pressure, increase in boiling point

If the pressure inside the cooker rises, a higher temperature is needed to boil water. This depends on what is known as vapour pressure, in other words, based on the amount of pressure, water molecules need more or less energy to escape and trigger the boiling process. It means, it increases the boling point of water in less time leading to early cooking of food.