Which process below would be operated under constant pressure? Group of answer choicesSimmering soup in a pot with no lidSteaming rice in a sealed pressure cooker

The process that would be operated under constant pressure is "Simmering soup in a pot with no lid".

Here's why:

1. When you simmer soup in a pot with no lid, the pressure is constant because it's equal to the atmospheric pressure. The steam generated from the soup is allowed to escape into the atmosphere, so the pressure inside the pot doesn't increase.

2. On the other hand, when you steam rice in a sealed pressure cooker, the pressure is not constant. As the water inside the cooker turns to steam, the pressure inside the cooker increases because the steam cannot escape. This increased pressure is what cooks the rice more quickly.