Refer to NEET Physics Kinetic Theory MCQs Set A provided below available for download in Pdf. The MCQ Questions for Full Syllabus Physics with answers are aligned as per the latest syllabus and exam pattern suggested by NEET, NCERT and KVS. Multiple Choice Questions for Kinetic Theory are an important part of exams for Full Syllabus Physics and if practiced properly can help you to improve your understanding and get higher marks. Refer to more Chapter-wise MCQs for NEET Full Syllabus Physics and also download more latest study material for all subjects
MCQ for Full Syllabus Physics Kinetic Theory
Full Syllabus Physics students should refer to the following multiple-choice questions with answers for Kinetic Theory in Full Syllabus.
Kinetic Theory MCQ Questions Full Syllabus Physics with Answers
Question: A cubic vessel (with face horizontal + vertical) contains an ideal gas at NTP. The vessel is being carried by a rocket which is moving at a speed of 500 m s–1 in vertical direction. The pressure of the gas inside the vessel as observed by us on the ground
a) remains the same because motion of the vessel as a whole does not affect the relative motion of the gas molecules and the walls
b) will be different on the top wall and bottom wall of the vessel
c) remains the same because 500 ms–1 is very much smaller than vrms of the gas
d) None of these
Answer: remains the same because motion of the vessel as a whole does not affect the relative motion of the gas molecules and the walls
Question:
a) the pressure on all the faces will the equal
b) the pressure on EFGH would be half that on ABCD
c) the pressure on all the faces will the equal
d) the pressure on EFGH would be zero
Answer: the pressure on all the faces will the equal
Question: Boyle's law is applicable for an
a) isothermal process
b) adiabatic process
c) None of these
d) isochoric process
Answer: isothermal process
Question: A cylinder containing an ideal gas is in vertical position and has a piston of mass M that is able to move up or down without friction (figure). If the temperature is increased
a) V will change but not p
b) p will change but not V
c) only p will increase according
d) None of these
Answer: V will change but not p
Question: Volume versus temperature graphs for a given mass of an ideal gas are shown in figure. At two different values of constant pressure. What can be inferred about relation between p1 and p2?
a)
b)
c)
d) Data is insufficient
Answer:
Question:
a) 20 times the pressure initially
b) 10 times the pressure initially
c) 2 times the pressure initially
d) same as the pressure initially
Answer: 20 times the pressure initially
Question:
a)
b)
c)
d)
Answer:
Question: An inflated rubber balloon contains one mole of an ideal gas, has a pressure p, volume V and temperature T. If the temperature rises to 1.1 T, and the volume is increased to 1.05 V, the final pressure will be
a) between p and 1.1
b) 1.1 p
c) less than p
d) p
Answer: between p and 1.1
Question: The mean free path of molecules of a gas, (radius ‘r’) is inversely proportional to :
a) r2
b) r3
c) r
d) None of these
Answer: r2
Question: Assertion : Mean free path of a gas molecules varies inversely as density of the gas.
Reason : Mean free path varies inversely as pressure of the gas
a) If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
b) If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
c) If Assertion is correct but Reason is incorrect
d) If both the Assertion and Reason are incorrect
Answer: If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
Question:
a) 8.0 JK-1 mol-1
b) 7.0 JK-1 mol-1
c) 7.5 JK-1 mol-1
d) 8.5 JK-1 mol-1
Answer: 8.0 JK-1 mol-1
Question: Two vessels separately contain two ideal gases A and B at the same temperature. The pressure of A being twice that of B. Under such conditions, the density of A is found to be 1.5 times the density of B. The ratio of molecular weight of A and B is :
a) 3/4
b) 2
c) 1/2
d) 2/3
Answer: 3/4
Question:
a)
b)
c)
d)
Answer:
Question: Consider an ideal gas confined in an isolated closed chamber. As the gas undergoes an adiabatic expansion, the average time of collision between molecules increases as Vq, where V is the volume of the gas. The value of q is :
a)
b)
c)
d)
Answer:
Question: A vessel of volume 20L contains a mixture of hydrogen and helium at temperature of 27°C and pressure 2 atm. The mass of mixture is 5g. Assuming the gases to be ideal, the ratio of mass of hydrogen to that of helium in the given mixture will be
a) 2 : 5
b) 1 : 2
c) 2 : 1
d) 2 : 3
Answer: 2 : 5
Question: The molecules of a given mass of a gas have r.m.s. velocity of 200 ms–1 at 27°C and 1.0 × 105 Nm–2 pressure. When the temperature and pressure of the gas are respectively, 127°C and 0.05 × 105 Nm–2, the r.m.s. velocity of its molecules in ms–1 is :
a)
b)
c)
d)
Answer:
Question:
a)
b)
c)
d)
Answer:
Question: Assertion : One mole of any substance at any temperature or volume always contains 6.02 × 1023 molecules.
Reason : One mole of a substance always refers to S.T.P. conditions
a) If Assertion is correct but Reason is incorrect.
b) If both the Assertion and Reason are incorrect
c) If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
d) If both Assertion and Reason are correct and Reason is the correct explanation of Assertion.
Answer: If Assertion is correct but Reason is incorrect.
Question:
a)
b)
c)
d)
Answer:
Question:
a) 1.28
b) 1.99
c) 1.4
d) 1.66
Answer: 1.28
Question: A gas mixture consists of 2 moles of O2 and 4 moles of Ar at temperature T. Neglecting all vibrational modes, the total internal energy of the system is :
a) 11 RT
b) 4 RT
c) 9 RT
d) 15 RT
Answer: 11 RT
Question: If the root mean square velocity of the molecules of hydrogen at NTP is 1.84 km/s. Calculate the root mean square velocity of oxygen molecule at NTP, molecular weight of hydrogen and oxygen are 2 and 32 respectively
a) 0.47 km/sec
b) 0.94 km/s
c) 1.47 km/sec
d) 1.84 km/s
Answer: 0.47 km/sec
Question: Assertion : Air pressure in a car tyre increases during driving.
Reason : Absolute zero temperature is not zero energy temperature.
a) If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
b) If Assertion is correct but Reason is incorrect
c) If both the Assertion and Reason are incorrect
d) If both Assertion and Reason are correct and Reason is the correct explanation of Assertion
Answer: If both Assertion and Reason are correct, but Reason is not the correct explanation of Assertion.
Question:
a) –2.5 × 1025
b) 1.38 × 1023
c) 2.5 × 1025
d) –1.61 × 1023
Answer: 1.38 × 1023
Question:
a) a = 14 b
b) a = 28 b
c)
d) a = b
Answer: a = 14 b
More Questions..........................................................
Question: Five gas molecules chosen at random are found to have speeds of 500, 600, 700, 800 and 900 m/s:
a) The root mean square speed is 14 m/s higher than the average speed.
b) The root mean square speed is 14 m/s lower than the average speed
c) The root mean square speed is Ö14 m/s higher than the average speed
d) The root mean square speed and the average speed are the same
Answer: The root mean square speed is 14 m/s higher than the average speed.
Question: At what temperature will the rms speed of oxygen molecules become just sufficient for escaping from the Earth’s atmosphere?
(Given : Mass of oxygen molecule (m) = 2.76 × 10–26 kg Boltzmann’s constant kB = 1.38 × 10–23 JK–1)
a) 8.360 × 104 K
b) 5.016 × 104 K
c) 2.508 × 104 K
d) 1.254 × 104 K
Answer: 8.360 × 104 K
Question:
a) I only
b) I and II
c) II only
d) I, II and III
Answer: I only
Question: 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 equilibrium is 2kB T.
a) Assertion is correct, reason is incorrect
b) Assertion is correct, reason is correct; reason is a correct explanation for assertion.
c) Assertion is incorrect, reason is correct
d) Assertion is correct, reason is correct; reason is not a correct explanation for assertion
Answer: Assertion is correct, reason is incorrect
Question: Two moles of an ideal monoatomic gas occupies a volume V at 27°C. The gas expands adiabatically to a volume 2 V. Calculate (i) the final temperature of the gas and (ii) change in its internal energy.
a) (i)189 K (ii) –2.7 kJ
b) (i) 189 K (ii) 2.7 kJ
c) (i)195 K (ii) –2.7 kJ
d) (i)195 K (ii) 2.7 kJ
Answer: (i)189 K (ii) –2.7 kJ
Question: The mass of H2 molecule is 3.32 × 10–24 g. If 1023 hydrogen molecules per second strike 2 cm2 of wall at an angle of 45o with the normal, while moving with a speed of 105 cm/s, the pressure exterted on the wall is nearly.
a) 2350 N/m2
b) 1660 N/m2
c) 3320 N/m2
d) 1350 N/m2
Answer: 2350 N/m2
Question:
a) He
b) H2
c) NO2
d) CO2
Answer: He
Question: By what percentage should the pressure of a given mass of a gas be increased so as to decrease its volume by 10% at a constant temperature?
a) 11.1 %
b) 10.1 %
c) 9.1 %
d) 8.1 %
Answer: 11.1 %
Question: At 10° C the value of the density of a fixed mass of an ideal gas divided by its pressure is x. At 110°C this ratio is:
a)
b)
c)
d)
Answer:
Question:
a)
b)
c)
d)
Answer:
Question:
a)
b)
c)
d)
Answer:
Question:
a)
b)
c)
d) None of these
Answer:
Question: A closed hollow insulated cylinder is filled with gas at 0°C and also contains an insulated piston of negligible weight and negligible thickness at the middle point. The gas on one side of the piston is heated to 100°C. If the piston moves 5 cm, the length of the hollow cylinder is
a) 64.6 cm
b) 38.6 cm
c) 27.3 cm
d) 13.65 cm
Answer: 64.6 cm
Question:
a) 1 : 1
b) 3 : 4
c) 2 : 3
d) 1 : 3
Answer: 1 : 1
Question:
a)
b)
c)
d)
Answer:
Question:
a)
b)
c)
d) None of these
Answer:
Question: N (< 100) molecules of a gas have velocities 1, 2, 3, ........ N km/s respectively. Then ratio of rms speed and average speed is
a)
b)
c)
d)
1
Answer:
Question: Graph of specific heat at constant volume for a monatomic gas is
a)
b)
c)
d) None of these
Answer:
Question: Air is filled at 60°C in a vessel of open mouth. The vessel is heated to a temperature T so that 1/4th part of air escapes. Assuming the volume of vessel remaining constant, the value of T is
a) 171°C
b) 333°C
c) 444°C
d) 80°C
Answer: 171°C
Question: 1 mole of a monatomic and 2 mole of diatomic gas are mixed, now the resulting gas is taken through a process in which molar heat capacity was found 3R. Polytropic constant in the process is
a) –1/5
b) 2/5
c) 1/5
d) None of these
Answer: –1/5
Question:
a)
b)
c)
d) None of These
Answer:
Question: The density of a gas is 6 × 10–2 kg/m3 and the root mean square velocity of the gas molecules is 500 m/s. The pressure exerted by the gas on the walls of the vessel is
a) 5×103N / m2
b) 0.83×10–4 N / m2
c) 1.2×10–4N / m2
d) 30N / m2
Answer: 5×103N / m2
Question: The density of air at pressure of 105 Nm–2 is 1.2 kg m–3. Under these conditions, the root mean square velocity of the air molecules in ms–1 is
a) 500
b) 1000
c) 1500
d) 3000
Answer: 500
Question: Figure shows a parabolic graph between T and 1/V for a mixture of a gas undergoing an adiabatic process. What is the ratio of Vrms of molecules and speed of sound in mixture?
a)
b)
c)
d)
Answer:
Question: N moles of a diatomic gas in a cylinder are at a temperature T. Heat is supplied to the cylinder such that the temperature remains constant but n moles of the diatomic gas get converted into monoatomic gas. What is the change in the total kinetic energy of the gas ?
a)
b)
c) 0
d)
Answer:
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MCQs for Physics NEET Full Syllabus Kinetic Theory
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Kinetic Theory MCQs Physics NEET Full Syllabus
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Kinetic Theory NEET Full Syllabus MCQs Physics
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NEET MCQs Physics Full Syllabus Kinetic Theory
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