Question

A pressure cooker is based on the principle that boiling water increases with the_______.

• A. Increase in temperature
• B. Increase in volume
• C. Increase in pressure
• D. Decrease in pressure

Answer 1

The correct option is C

Increase in pressure

The pressure cooker is based on the principle that the boiling point of water increases with the increase in the pressure. Food can be cooked faster in a pressure cooker since the boiling point of water increases with pressure. The pressure cooker consists of a pressurized pot which has controlled vent at a specified pressure above atmospheric pressure. It is typical for the pressure of venting to be about 15 pounds per square inch above atmospheric pressure. That raises the boiling point to about 121${}^{0}C$ or 257 ${}^{0}F$.