# For hydrogen gas, Z is greater than unity at all pressure.If true enter 1, else enter 0.(A) 1(B) 0

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Hint: Z is the compressibility factor of a gas and it can be expressed in terms of formula as: $Z=\dfrac{PV}{nRT}$ .
The value of Z will depend upon the intermolecular forces acting between the gas molecules.

- The ratio of actual volume of any gas at certain temperature and pressure to the ideal volume of that gas in the same conditions is shown by Z and it is called the compressibility factor. It can be given as $Z=\dfrac{PV}{nRT}$