Helium is suitable for gas thermometry at low temperatures because of its ...

  • A
    High transition temperature.
  • B
    Real behavior.
  • C
    Low boiling point and nearly ideal behavior.
  • D
    High boiling point and high polarizability.

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(Integer answer) ($Z$: compressibility factor)

At $300 \, K$ temperature and $40 \, atm$ pressure,if one mole of $CO_2$ occupies $0.4 \, L$,then it is:

Van der Waals equation of state is obeyed by real gases. For $n$ moles of a real gas,the expression will be

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