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Which of the following statement(s) is(are) correct about the gas according to "Kinetic molecular theory"? (i) The mean free path is much higher than the diameter of the gas (ii) The molecules move in straight lines until they colloide (iii) The diatomic gas has a relationship between absolute temperature and root mean square speed ( V _ ms ) as T = M V _ ms ^2 9 R (M-molar mass, R-universal gas constant) (iv) Potent

Options

  1. AOnly (iii)
  2. BOnly (i) and (ii)
  3. COnly (ii) and (iv)
  4. D(i), (ii), (iii) and (iv)

Correct answer

B. Only (i) and (ii)

Step-by-step solution

Diatomic gas has three translational and two rotational degree of freedom.

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