Related InterviewSolutions

• The diameter of an oxygen molecule is 3 `Ã…` The ratio of molecular volume to the actual volume occupied by the oxygen gas at STP isA. `2xx10^(-4)`B. `1xx10^(-4)`C. `1.5xx10^(-4)`D. `4xx10^(-4)`
• Molecular motion shows itself asA. temperatureB. internal energyC. frictionD. viscosity
• 1 mole of a gas with `gamma=7//5` is mixed with 1 mole of a gas with `gamma=5//3`, then the value of `gamma` for the resulting mixture isA. `7/5`B. `2/5`C. `3/2`D. `(12)/(7)`
• The kinetic theory of gases gives the formula `PV=1/3Nmv^(2)` for the pressure P exerted by a gas enclosed in a volume V. The term Nm representsA. the mass of a mole of the gasB. the mass of the present in the volume VC. the averatge mass of one molecule of the gasD. the total number of molecules present in volume V
• Assertion: Each vibrational mode gives two degrees of freedom. Reason: By law of equipartition of energy, the energy for each degree of freedom in thermal equlibrium is `2k_(B)T.`A. If both assertion and reason are true and reason is the correct explanation os assertion.B. If both assertion and reason are true but reason is not be correct explanation of assertion.C. If assertion is true but reason is false.D. If both assertion and reason are false.
• According to the law of equipartition of energy, the energy associated with each degree of freedom is :A. `E=k_(B)T`B. `E=(1)/(2)k_(B)T`C. `E=3k_(B)T`D. `E=(3)/(2)k_(B)T`
• `0.014` kg of nitrogen is enclosed in a vessel at a temperature of `24^(@)C.` At which temperature the rms velocity of nitrogen gas is twice it’s the rms velocity at `27^(@)C`?A. 1200 KB. 600 KC. 300 KD. 150 K
• Which of the following diagrams (figure) depicts ideal gas behaviour?A. B. C. D.
• Two molecules of a gas have speeds of `9xx10^(6) ms^(-1)` and `1xx10^(6) ms^(-1)`, respectively. What is the root mean square speed of these molecules.
• The molecules of a given mass of a gas have root mean square speeds of `100 ms^(-1) "at " 27^(@)C` and 1.00 atmospheric pressure. What will be the root mean square speeds of the molecules of the gas at `127^(@)C` and 2.0 atmospheric pressure?A. `(200)/(sqrt3)`B. `(100)/(sqrt3)`C. `(400)/(3)`D. `(200)/(3)`