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Kinetic Theory

JEE Main 2024 (Online) 29th January Morning ShiftMCQEasy📈 Topic in 17% papers+4−1
Ques. 1JEE Main 2024, 29 January (Morning Shift)

Two vessels A and B are of the same size and are at same temperature. A contains 1 g of hydrogen and B contains 1 g of oxygen. PA and PB are the pressures of the gases in A and B respectively, then PAPB is:

  1. 4
  2. 32
  3. 8
  4. 16

Answer

(4) 16

Solution

PV=nRT P n

V and T are the same for both vessels.

nH2= 12, nO2= 132

PAPB= 1/21/32=16

Answer: (4)

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Ques. 2JEE Main 2024, 29 January (Evening Shift)

The temperature of a gas having 2.0 1025 molecules per cubic meter at 1.38 atm (Given, k=1.38 10-23 J K-1) is :

  1. 500 K
  2. 300 K
  3. 200 K
  4. 100 K
Ques. 3JEE Main 2024, 29 January (Evening Shift)

N moles of a polyatomic gas (f=6) must be mixed with two moles of a monoatomic gas so that the mixture behaves as a diatomic gas. The value of N is :

  1. 6
  2. 2
  3. 4
  4. 3
Ques. 4JEE Main 2024, 27 January (Morning Shift)

The average kinetic energy of a monatomic molecule is 0.414 eV at temperature : (Use KB = 1.38 10-23 J/K)

  1. 3000 K
  2. 3200 K
  3. 1600 K
  4. 1500 K
Ques. 5JEE Main 2024, 27 January (Evening Shift)

The total kinetic energy of 1 mole of oxygen at 27 is : [Use universal gas constant (R)=8.31 J/mole K]

  1. 6232.5 J
  2. 5670.5 J
  3. 6845.5 J
  4. 5942.0 J

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