How is pressure of gas created ?

How is the pressure of gas calculated when it is collected over water, using Dalton's law of partial pressure?

How is the pressure of gas calculated when it is collected over water, using Dalton's law of partial pressure?

(A): The pressure of a gas depends upon kinetic energy of its molecules. (R) : Kinetic energy of gas molecules increases with increase in pressure.

Negative pressure inside lungs is created due to

The pressure of gas is decided by

A constant volume gas thermometer is preferred over a constant pressure gas thermometer as