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Padma Shri H C Verma (Objective Exercises) Based, MCQs- Kinetic Theory of Gases Contact Number: 9667591930 / 8527521718, Question 1., , Question 5., , Which of the following parameters is the same for, molecules of all gases at a given temperature?, , Which of the following gases has maximum rms speed at, a given temperature ?, , 1. Mass, , 1. hydrogen, , 2. Speed, , 2. nitrogen, , 3. Momentum, , 3. oxygen, , 4. Kinetic energy., , 4. carbon dioxide, , Question 2., , Question 6., , A gas behaves more closely as an ideal gas at, , Figure 24-Ql shows graphs of pressure vs. density for an, ideal gas at two temperatures T1 and T2, , 1. low pressure and low temperature, 2. low pressure and high temperature, 3. high pressure and low temperature, 4. high pressure and high temperature., , Question 3., The pressure of an ideal gas is written as p =, refers to, , 2E, 3V, , . Here E, , 1. T1 > T2, 2. T1 = T2, , 1. translational kinetic energy, , 3. T1 < T2, , 2. rotational kinetic energy, , 4. any of the three is possible, , 3. vibrational kinetic energy, 4. total kinetic energy, , Question 4., The energy of a given sample of an ideal gas depends, only on its, 1. volume, 2. pressure, 3. density, , Question 7., The mean square speed of the molecules of a gas at, absolute temperature T is proportional to, 1., 2., , 1, T, , √T, , 3. T, 4. T2, , 4. temperature., , Page: 1
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Padma Shri H C Verma (Objective Exercises) Based, MCQs- Kinetic Theory of Gases Contact Number: 9667591930 / 8527521718, Question 8., , Question 12., , Suppose a container is evacuated to leave just one, molecule of a gas in it. Let va and urms represent the, average speed and the rms speed of the gas., , The quantity, , 1. va > vrms, , 2. kinetic energy of the gas, , 2. ua < urms, , 3. number of moles of the gas, , 3. va = vrms, 4. vrms is undefined., , pV, kT, , represents, , 1. mass of the gas, , 4. number of molecules in the gas., , Question 13., The process on an ideal gas, shown in figure (24-Q2), is, , Question 9., The rms speed of oxygen at room temperature is about, 500 m/s. The rms speed of hydrogen at the same, temperature is about, 1. 125 m s–1, 2. 2000 m s–1, 3. 8000 m s–1, 4. 31 m s–1, , 1. isothermal, 2. isobaric, 3. isochoric, 4. none of these, , Question 10., The pressure of a gas kept in an isothermal container is, Question 14., 200 kPa. If half the gas is removed from it, the pressure, will be, Consider a collision between an oxygen molecule and a, hydrogen molecule in a mixture of oxygen and hydrogen, 1. 100 kPa, kept at room temperature. Which of the following are, possible ?, 2. 200 kPa, 3. 400 kPa, , (a) The kinetic energies of both the molecules increase., , 4. 800 kPa., , (b) The kinetic energies of both the molecules decrease, (c) The kinetic energy of the oxygen molecule increases, and that of the hydrogen molecule decreases., , Question 11., The rms speed of oxygen molecules in a gas is v. If the, temperature is doubled and the oxygen molecules, dissociate into oxygen atoms, the rms speed will become, 1. v, 2. v√2, 3. 2v, 4. 4v, , (d) The kinetic energy of the hydrogen molecule, increases and that of the oxygen molecule decreases., Chooose the correct option, 1. (a), (b), 2. (b) , (c), 3. (c) , (d), 4. (a) (d), , Page: 2
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Padma Shri H C Verma (Objective Exercises) Based, MCQs- Kinetic Theory of Gases Contact Number: 9667591930 / 8527521718, Question 15., , Question 17., , Consider a mixture of oxygen and hydrogen kept at room, temperature. As compared to a hydrogen molecule an, oxygen molecule hits the wall, , Keeping the number of moles, volume and temperature, the same, which of the following are the same for all, ideal gases ?, , (a) with greater average speed, , (a) rms speed of a molecule, , (b) with smaller average speed, , (b) density, , (c) with greater average kinetic energy, , (c) pressure, , (d) with smaller average kinetic energy., , (d) average magnitude of momentum., , Chooose the correct option, , Chooose the correct option, , 1. (a), (b), , 1. (a), (b), , 2. (b) only, , 2. (b) , (c), , 3. (c) , (d), , 3. (c) only, , 4. (a) (d), , 4. (a) (d), , Question 16., , Question 18., , Which of the following quantities is zero on an average, for the molecules of an ideal gas in equilibrium ?, , The average momentum of a molecule in a sample of an, ideal gas depends on, , (a) kinetic energy, , (a) temperature, , (b) momentum, , (b) number of moles, , (c) density, , (c) volume, , (d) speed, , (d) none of these, , Chooose the correct option, , Chooose the correct option, , 1. (a), (b), , 1. (a), (b), , 2. (b) only, , 2. (b) , (c), , 3. (c) , (d), , 3. (c) , (d), , 4. (a) (d), , 4. (d) only, , Page: 3
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Padma Shri H C Verma (Objective Exercises) Based, MCQs- Kinetic Theory of Gases Contact Number: 9667591930 / 8527521718, Question 19., Which of the following quantities is the same for all ideal, gases at the same temperature ?, (a) the kinetic energy of 1 mole, (b) the kinetic energy of 1 g, (c) the number of molecules in 1 mole, (d) the number of molecules in 1 g, Chooose the correct option, 1. (a), (b), 2. (b) , (c), 3. (c) , (d), 4. (a) (c), , Question 20., Consider the quantity, , M kT, pV, , of an ideal gas where M is, , the mass of the gas. It depends on the, (a) temperature of the gas, (b) volume of the gas, (c) pressure of the gas, (d) nature of the gas, Chooose the correct option, 1. (a), (b), 2. (b) , (c), 3. (d) only, 4. (a) (d), , CLICK HERE to get, FREE ACCESS for 3, days of ANY NEETprep, course, Page: 4
