A helium atom is two times heavier than a hydrogen molecule at 298 K, the average kinetic energy of helium is

(1) Two times that of hydrogen molecules

(2) Same as that of hydrogen molecules

(3) Four times that of hydrogen molecules

(4) Half that of hydrogen molecules

Subtopic:  Kinetic Theory of Gas |
 71%
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NEET 2023 - Target Batch - Aryan Raj Singh
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Two flasks A and B of equal volume containing NH3 and HCl gases, are connected by a narrow tube of negligible volume. The two gases were prevented from mixing by stopper fitted in connecting tube. For further detail of experiment refer to the given figure. What will be final pressure in each flask when passage connecting two tubes are opened. Assume ideal gas behaviour of NH3 and HCl gas and the reaction.

     

(1) 40 mm Hg                                         

(2) 60 mm Hg

(3) 20 mm Hg                                         

(4) 10 mm Hg

Subtopic:  Dalton's Law |
 52%
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NEET 2023 - Target Batch - Aryan Raj Singh
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The ratio of average molecular kinetic energy of UF6 to that of H2, both at 300 K is-

(1) 1 : 1                       

(2) 7 : 2

(3) 176 : 1                   

(4) 2 : 7

Subtopic:  Molecular Velocity |
 73%
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NEET 2023 - Target Batch - Aryan Raj Singh
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A mono atomic gas diatomic gas and triatomic gas are mixed, taking one mole of each Cp/Cv for the mixture is-

(1) 1.40                               

(2) 1.428

(3) 1.67                               

(4) 1.33

Subtopic:  Kinetic Theory of Gas |
 61%
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NEET 2023 - Target Batch - Aryan Raj Singh
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According to kinetic theory of gases, for a diatomic molecule

(1) The pressure exerted by the gas is proportional to the mean velocity of the molecule.

(2) The pressure exerted by the gas is proportional to the root mean square velocity of the molecule.

(3) The root mean square velocity of the molecule is inversely proportional to the temperature.

(4) The mean translational kinetic energy of the molecule is proportional to the absolute temperature.

Subtopic:  Kinetic Theory of Gas |
 64%
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NEET 2023 - Target Batch - Aryan Raj Singh
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The values of vander waals constant ‘a’ for the gases O2, N2NH3 and CH4 are 1.36, 1.39, 4.17 and 2.253 lit2 atom mol-2 respectively. The gas which can most easily be liquefied is-

(A) O2                                 

(B) N2

(C) NH3                              

(D) CH4

Subtopic:  van der Waal’s Correction |
 84%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

At low pressure, the vander waals equation is written as :

(1) Z=1-aRTV                                 

(2) Z=1-RTVa

(3) Z=1+aRTV                                 

(4) Z=1+RTVa

Subtopic:  van der Waal’s Correction |
 72%
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NEET 2023 - Target Batch - Aryan Raj Singh
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X ml of H2 gas effuses through a hole in a container in 5 seconds. The time taken for the effusion of the same volume of the gas specified below under ideal condition is

(1) 10 seconds : He                          

(2) 20 seconds : O2

(3) 25 seconds : CO                          

(4) 55 seconds : CO2

Subtopic:  Graham's Law |
 73%
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NEET 2023 - Target Batch - Aryan Raj Singh
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The valves X and Y are opened simultaneously. The white fumes of NH4Cl will first form at :

  

(1) A                                                 

(2) B

(3) C                                                 

(4) A, B and C simultaneously

Subtopic:  Graham's Law |
 67%
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NEET 2023 - Target Batch - Aryan Raj Singh
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A gas mixture consists of 2 moles of oxygen and 4 moles of a argon at temperature T. Neglecting all vibrational modes, the total internal energy of the system is –

(1) 4RT                         

(2) 5RT

(3) 15RT                       

(4) 11RT

Subtopic:  Kinetic Theory of Gas |
 68%
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NEET 2023 - Target Batch - Aryan Raj Singh
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