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Assertion: Compressibility factor for hy...

Assertion: Compressibility factor for hydrogen varies with pressure with positive slope at all pressures.
Reason: Even at low pressures, repulsive forces dominate hydrogen gas.

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The correct Answer is:
A
Assertion is correct as seen from the plot in Fig. 5.33 (a), page 5/47. Reason is the correct explanation because for `H_(2)` at 273 K, `Z gt 1` which means that it is difficult to compress the gas as compared to ideal gas. This implies that repulsive forces dominate.
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