Question

Food is cooked faster in a pressure cooker because?
1. Steam is hotter than the boiling water
2. In the cooker water starts boiling at a lower temperature
3. Heat cannot escape from the cooker
4. Due to high pressure the boiling point of water is raised

Answer 1

Correct Answer - Option 4 : Due to high pressure the boiling point of water is raised

The correct answer is Due to high pressure the boiling point of water is raised.

• Food is cooked faster in a pressure cooker because due to high pressure the boiling point of water is raised.
• A pressure cooker works on the principle that with rising pressure the boiling point of water increases.
• Due to the high-pressure boiling point of water rises from 100o C to around 120o C.
• So, the steam also becomes hotter and is also trapped inside the cooker resulting in faster cooking of food.
• When cooked in open vessels the hot air escapes.
• But in the pressure cooker moisture surrounding the food itself reaches higher temperatures than it would without the pressure which speeds the cooking.
• So, the cooking speed is increased nearly four times.