# P Keeping the Number of Moles, Volume and Temperature the Same, Which of the Following Are the Same for All Ideal Gases? - Physics

MCQ

Keeping the number of moles, volume and temperature the same, which of the following are the same for all ideal gases?

#### Options

• Rms speed of a molecule

• Density

• Pressure

• Average magnitude of momentum.

#### Solution

Pressure

Pressure of an ideal gas is given by PV = $\frac{1}{3}mn u^2$ .

We know that pressure depends on volume, number of molecules and root mean square velocity. Also, root mean square velocity depends on the temperature of the gas. Since the number of molecules, volume and temperature are constant, pressure of the gas will not change.
Concept: Kinetic Theory of Gases and Radiation - Introduction of Kinetic Theory of an Ideal Gas
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#### APPEARS IN

HC Verma Class 11, Class 12 Concepts of Physics Vol. 2
Chapter 2 Kinetic Theory of Gases
MCQ | Q 4 | Page 34