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Q120
(CAPF/2026)
Science & Technology › Basic Science (Physics, Chemistry, Biology)
In the ideal gas equation PV = ART, relating pressure P, volume V and absolute temperature T, the quantity u is
Result
Your answer:
—
·
Correct:
A
Explanation
The ideal gas law is the equation of state of a hypothetical ideal gas, typically written as PV = nRT or PV = μRT. In this formula:
- P is the pressure of the gas.
- V is the volume.
- T is the absolute temperature.
- R is the universal gas constant.
- The quantity μ (often represented by the letter 'n', or 'u' in some transcriptions) represents the number of moles of the gas.
A mole is the SI unit for the amount of substance. Option B is incorrect because the number of molecules (N) would require the Boltzmann constant (kB) in the form PV = NkBT. Option C (specific heat ratio, γ) and Option D (coefficient of friction) are unrelated to the variables in the standard ideal gas equation.
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SIMILAR QUESTIONS
If we plot a graph between volume V and inverse of pressure P (i.e.. -^) for an ideal gas at constant temperature T, the curve so obtained is
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The product of the pressure and the volume of an ideal gas is
If the volume of a fixed mass of an ideal gas is halved at a constant temperature, the pressure inside the container would :